Faraday’s Law Essay

The Faraday is the electrical charge contained in a mole of electrons. In this experimented 2 values are determined. One by measuring the amount of charge needed to reduce H+ ions to h2 gas, and the other is as Cu atoms are oxidized to Cu2+ ions. The chemical formula applied during this lab was Cu + 2H+-> Cu+2 + H2. Procedure Cleaned a copper plate in 2M HNO3, weighed it and recorded data. Mixed 100ml distilled water with 50ml of 3M sulfuric acid in a 200ml beaker. Put buret upside down into beaker and placed cathode up inside buret. Connected side aspirator to water aspirator. Set voltage regulator to zero turned power on; voltage was put to 190 amps and started recording the time. Regulated dial to keep current constant until 25ml of hydrogen had filled the buret. Data Calculations 1. Average current during electrolysis = 190 amps 2. Elapsed time in electrolysis (seconds) = 1080 seconds 3. Coulombs transferred in electrolysis = . 1900 x 1080 = 205. 2 coulombs 4. Mass loss of copper anode = 6. 6061g – 6. 5427g = . 0634g 5. Moles of Cu lost = . 0634/63. 54= 9. 98 x 10^-4 moles 6. Moles of e- released by Cu oxidation = 2 x 9. 98 x 10^-4 = . 00200 moles 7. Value of faraday for Cu oxidation = 205. 2/. 00200 = 1. 03 x 10^ -5 coulombs/moles 8. Mercury equivalent of water column = (1. 00g/mol)(337mm)=(H hg) = 24. 8 mm hg 9. Partial pressure of water vapor = 21. 068 (mm Hg) 10. partial pressure of hydrogen gas produced = 762. 5 = 24. 8 + 21. 068 + P h2 P h2 = 716. 6(mm Hg) 11. Moles of H2 formed = (. 943)(25. 3) = N(82. 05)(296) N=9. 8 x 10^-4 moles 12. Moles of e- use top reduce H+ = 2 x 9. 8 x 10^ – 4 = . 00196 moles 13. Value of Faraday of H+ reduction =205. 2/. 00196 = 1. 04 x 10 ^5 (coulombs/moles) Discussion 1. 04 x 10^5 coulombs was the calculated value for electrical charge contained in a mole of electrons. The equation applied for this experiment was Cu + 2H+ -> Cu+2 + H2. The experimental value calculated was 104,000, compared to the accepted value which is 96,500 coulombs/moles; the values are close in range. The percent error was 7. 77%, some possible reasons for error could producing too much or too little h2 in the buret. Another possible error could be not enough Cu+.

Electronics Art’s (EA) competitive advantage Essay

Electronics Art’s (EA) competitive advantage from the perspective of the industrial organization view (I/O) is their choice of industry is very attractive. According to The 2013 Global Games Market Report, game revenues will grow at a compound annual growth rate (CAGR) of 6.7% to $86.1 billion by 2016. The number of gamers worldwide will rise from 1.21 billion this year to 1.55 billion. Next, we’ll have a perspective of resource-based view (RBV). Before the ages of digital game , EA’s resource based view in the past was great. They are just concentrated in making More than 100 titles games such as Battlefield, Madden NFL, FIFA Soccer, Rock Band, Need for Speed, and The Simpsons. SNS contents like monthly fee, partial monetization, facebook and on line services like web games, various portal sites or distributed contents have captured more than 40% of the market. It is widespread across the console game market through out total game market. And it will be take huge market share. Zynga that saw this opportunities and jumped in on the burgeoning social gaming revolution is nipping at the industry’s heels. On the contrary, EA that saw this opportunities and jumped in on the burgeoning social gaming revolution is come to a halt. And they seemed to have all the resources needed when they had their competitive advantage but Electronics Arts did not prepare themselves for the changes in the behavior of consumers and retailers or trends which is now causing them to loose their competitive advantage. And the existing game of EA Is easy to emulate.  From these, we can have one conclusion. eventually, ea exemplifies the challenges of this industry, where customers are fickle and demanding and competition is intense. But after that, EA introduces digital platform and comes in second.

LIterary Analysis, Bioethics, Psychology, Sociology, and History of Essay

LIterary Analysis, Bioethics, Psychology, Sociology, and History of Never Let Me Go by Kazuo Ishiguro - Essay Example This has required the readers to scrutinize the cultural supposition on the subject of human humanness, and to countenance intricate questions: what it means to be human. How humanity can be defined. The novel has led to the many research; the literal research can be as follows: bioethics, sociology, and psychology of the book. The book goes through past the boundaries of the literal novel, by gripping the mystery of the beautiful love story, wounding critique of human insensitivity, also in the moral examination of people tend to treat the fewer fortunes in our different society today. The book can be analyzed, and we can easily come up with various themes, which can educate our society of today, starting from, the sociological and psychological and history of the book (Whitehead, 55). The history of human cloning started, from a group in the New Castle University who took eleven women (Whitehead, 54). They took their genetic resources and replaced it with DNA from the developing stem cells. The project was to make the cloned embryos from which the stem cells could be used to cure the diseases. The stem cell lines are produced by taking the genetic materials of the patient and putting it into the eggs that donated by the donors. The resultant egg, therefore, became a perfect match for individuals, and used in treating disease such as diabetes without any problem of rejection. The therapeutic cloning believed to have a huge potential to cure diseases, and disabilities in people, therefore, allowed in Britain. On the other hand, the reproductive cloning, this is the cloning of human embryos with the intention of creating a baby. It has become illegal since 2001 (Toker & Daniel, 164).Let me go as been enormously received extremely received, critically, and included t he curriculum courses of various colleges in both, Britain and the United States of America, it has also been include the secondary schools

IMPACT OF MORE ACCOUNTING INFORMATION Essay Example | Topics and Well Written Essays - 3000 words

IMPACT OF MORE ACCOUNTING INFORMATION - Essay Example The impact of more accounting information will be discussed in relation to the users of the financial statements such as the shareholders, suppliers, customers and creditors. Likewise, the impact of more accounting information when used by the competitors (Molloy and Molloy, 1996) or employees will also be discussed. Considerations of future situations tend to affect conventional accounting, although using elements of the future forms an essential component of the accounting structure. The financial standard of decision relevancy of accounting (Weston and Brigham, 1993), generally agreed to be a primary factor that gives societal value to accounting, may be weakened by the search for a more trustworthy accounting procedure. One of the best techniques in accounting would be to incorporate aspects of future values without leaving too many degrees of freedom for manipulating the data. The aim is thus to keep accounting credible, and yet predictable and even if more accounting informatio n becomes available, all aspects of the information will have to be considered, before any final conclusion is drawn on the advantages or disadvantages of the accounting information. ... The financial statements are audited by external auditors (Whittington and Pany, 1995) either chartered accountants or certified public accountants in order to give credibility to the statements. All companies are required to give financial statements to its shareholders, suppliers, creditors, employees, managers, board of directors, government regulating bodies and the like in order to ensure that the company does not violate any corporate laws and that they remain accountable to their stakeholders and financiers. The financial statements are important tools for decision making and determine company management policies and thus accounting forms the basis of any corporate management decision making. There have been arguments on incorporating additional estimates or forecasts of the future into financial statements and providing estimates of future cash flows. This may in turn be considered alongside some sensational corporate scandals, for companies located in the US, which have been focused on reducing the power of managers which could engage in fraudulent behavior and accounting manipulation of assets, liabilities and capital. A more reliable and validated or trustworthy figures on the balance sheet is expected and income statement accounts have been implemented by new and more complicated monitoring and inspection processes. As to how far this can be achieved can be studied by using market values in accounting reports. The Generally Accepted Accounting Principles (GAAPs) in a number of countries contain elements of the market values of assets and liabilities. To illustrate, International Accounting Standards (IAS), U.K., and U.S. GAAPs require financial investments that are not long-term investments,

Bill Clinton's Speech Essay Example | Topics and Well Written Essays - 1000 words

Bill Clinton's Speech - Essay Example Within hours of this confessional breakfast, the internet was a flurry of activity. The news of the speech, and the opinions of this president by millions around the world was spread, and the net seemed to close on William Jefferson Clinton. In a 445-page document, all posted on the internet, Kenneth Starr, the independent counsel, had found Bill Clinton liable to impeachment on eleven counts involving perjury, obstruction of justice, witness tampering, and abuse of authority. This indictment was supported by an agonizing and scandalous telling of details. In the Paula Jones case, Clinton had denied, under oath, ever having had sexual relations with "that woman, Miss Lewinsky". Therefore, Mr. Starr has provided a lurid and sometimes funny account of Bill Clinton's "sexual encounters" with Monica Lewinsky, a 21-year-old intern at the White House. This section of the report revealed Clinton "as a middle-aged urchin, dangerously vulnerable, lacking judgment, self-control and integrity. Public attention worldwide has naturally centered on this section of the Starr Report." (Ahmad) The response to the President's speech, varied among the many religious communities of the United States. Several who were present told reporters later that they had been deeply moved by the president's speech Dr. Joan Brown Campbell, general secretary of the US National Council of Churches, the largest ecumenical organization in the country, described the temper of the audience as "deeply spiritual". She believed Clinton to be penitent. She also told reporters that even so she wasn't sure if the United States was "prepared to be led by a repentant sinner." (Herlinger) A well-known African American clergyman, James Forbes, senior minister of New York City's Riverside Church, said in a television interview following the address that "it felt like a real holy moment. There was not a single false note. Here is a man who has been anointed by grace and awaits restoration," said Forbes. (Herlinger) Clinton emphatically denied doing anything wrong, following the accusations that surfaced in early 1998. He clearly stated he had no "sexual contact" with a young White House intern. These accusations were made in the course of a civil lawsuit against then President Clinton, in an alleged act of sexual harassment occurring while he was governor of Arkansas. Clinton was accused of lying to a grand jury about his sexual relations with Monica Lewinsky, the young intern. Having been caught in a series of lies about his personal affairs demanded a public response. That response took the shape of the "I have sinned" speech, delivered September 11, 1998, and one other delivered August 17, 1998. The September speech can be considered effective because it shifted the public focus in such a way that Clinton's character appealed to his audience. (Harris) Considering the two speeches to be Clinton's apologia to the American public several constants can be identified that contributed to the effectiveness, particularly the September speech. 1) Ethical appeals precede logical appeals; 2) Offensive remarks follow defensive remarks; 3) Most evidence appears in the middle third apologia; and 4) The argument resembles previously used arguments. A fifth constant more recently added to this list is an apologia ends with an appeal to

President Obama's Inaugural Address Essay Example | Topics and Well Written Essays - 1000 words

President Obama's Inaugural Address - Essay Example In the very beginning of his address, President Obama displays this forgiving attitude when he said â€Å"I thank President Bush for his service to our nation, as well as the generosity and cooperation he has shown throughout this transition†. The other discernible quality of the speech is its minimal rhetoric. President Obama, having spent close to two years on the campaign trail – initially for the primaries and later for the Presidency – might have been excused if he had resorted to the usual rhetorical flourishes. Breaking away from this tendency, the speech focused more on substance than style. The speech is also informed by historical context. For example, toward the beginning of the address, President Obama says â€Å"Forty-four Americans have now taken the presidential oath. The words have been spoken during rising tides of prosperity and the still waters of peace. Yet, every so often the oath is taken amidst gathering clouds and raging storms†¦We the People have remained faithful to the ideals of our forbearers, and true to our founding documents. So it has been. So it must be with this generation of Americans†. This passage perfectly illustrates how the new President weaved aspects of t he past and present in revealing his vision for the country’s future. The usage of the phrase ‘We the people’ is a particularly clever implementation, for it connects the present historic moment to the event of the Declaration of Independence nearly three centuries ago. On the flip side, one could argue that the inaugural address was not the most inspiring speech Mr. Obama had delivered in his political life. The speech that he gave in the 2004 Democratic convention brought him widespread attention. The force and spirit of that landmark speech is not matched in the inaugural address. Probably, the gravity of the current economic crisis and the restraint of high office might have had a subduing effect. On the positive side, the speech was

Teen Sex Trafficking Essay Example | Topics and Well Written Essays - 1000 words

Teen Sex Trafficking - Essay Example According to an article published by the San Francisco Chronicle, the united States of America is one of the top three countries in this world that engages in the trafficking of young girls for sex (May). This is due to the fact that the country is affluent, and this affluence is the tool that the pimps use to entice the girls into coming into the country to perform as sex slaves. Most of the time, these girls live in places where the government is corrupt, the families are suffering from starvation and poverty, and life is gloomy. Trying to make things better for themselves, these girls search for jobs in the wanted ads. May states in her article that these ads are of hostess and waitressing positions in the United States. Excited that they are going to be able to be saved from a life in poverty and have an opportunity to live in a country that is full of wealth, these girls quickly respond. It is only when they arrive that they find out that they have been tricked. Then, it is much too late. There is no escape for them, as their captors keep them locked up in their place of business. Their captors instill tremendous fear in them, so they will not even think of escaping (May). San Diego New 6 states that these pimps take things a step further by destroying their identity documents and telling them that if they try to escape, their families back home will be murdered (San Diego 6). Sex trafficking does not only involve girls that are foreigners, it also involves those who are born and raised on our home soil. One might wonder how these girls are tricked into sexual slavery, since this country is not in the same condition as those of the third world. These pimps have different tactics. An ABC News report tells us that predators go wherever the children are, whether it is at the mall, the beach, or any other place that is frequented by young people. These men are so obsessed with targeting young girls that they spend time keeping up with modern trends so as to appear cool, as well as to stay up to date on all the hot hangout spots. These predators study children so much that they are able to read them and know all of their weaknesses. Some are even offered fraudulent opportunities of modeling that are promised to pay good wages (ABC News). Like the women in the third world countries who jump for the chance to come to America to make a fruitful living and enjoy a ffluence, these domestic women are enticed by the money that they will receive through modeling off top-of-the-line clothes. And just like the women overseas, they, too, are tricked and can do nothing about it, as they find out when it is too late to do anything. And because the sex slavery operation is so well hidden, many of them are never rescued from their plights. One might wonder why these teen girls continue to suffer this gross injustice and why little seems to be done about the matter. One might even reason that since we are in a developed nation, crimes such as these should be minimal. Sadly, they are not, and little protection is offered to these youngsters. One article from the Tampa Tribune explains why law enforcement does not protect these teen prostitutes as much as they should. The article states that rather than viewing these girls as victims, they are viewed as criminals who have chosen to have a complete disregard for the laws against prostitution. Social workers make the problem even worse. Rather than trying to understand these

What cultural challenges do multinational corporations face with Essay - 2

What cultural challenges do multinational corporations face with people management in some overseas locations Critically discuss using illustrations to demonstrate your argument - Essay Example In particular, the paper will focus on the human resource challenges, challenges as a result of the new environment, organisational culture and cultural ways of conducting business among others. Different countries present different conditions that favour business to thrive. For instance, some prepare policies that act as a guide for companies willing to enter the country and conduct business (Hofstede, 2001). A cultural business analysis dictates that differences in cultures have a huge impact on the success of a foreign company. The culture of a country influences how the people perceive foreign business. In particular, the cultural aspects of the business environment to the business create awareness about the ways to deal with intercultural communication in business relation (Hofstede, 2001). It is always the case that many countries require that their local nationals are given a quota of certain positions by corporations establishing in their territories. Kogut and Singh (1998) argued that in many instances, the management professionals have challenges in getting the people with the required expertise following inadequate training or lack of advanced degrees. While education is held in high regard across different nations, there is some stereotype type that getting an education from certain areas is more superior to others. As a consequent, finding employees at home who are qualified or even ready to fill high profile positions in a context outside of their home country may prove quite an overwhelming task (Lewis, 2011). It is also the case that some employees have preferences to serving some areas of the world compared to others based on cultural differences (Lakomski, 2001). This presents challenges for the human resources of the large multinationals in trying to hire its workforce in their overseas offices. Retaining and engaging workers in foreign locations

Case Study- Democracy and Islam Study Example | Topics and Well Written Essays - 2000 words

- Democracy and Islam - Case Study Example After the overthrow of dictatorial regimes in Egypt, Tunisia, and Libya during the Arab spring, demands for a democratic form of government are also brewing up in the neighboring Arab states. The case study, written by Tessler and Brand in the year 1995, sheds some light on the present events happening in the Arab world as they reflect some repercussions originating from the historical realms of political Islam and democracy. The subject is of vital importance considering the current trend in Arab politics and its implications on international politics at large. The current events occurring in the Arab world have deep connections with the history of democracy and Islam in the region, and can be better understood with regards to the historical trends. According to Tessler and Brand (1995), Islam has significantly grown in its importance in the Arab world. Such sentiments are visible through the more apparent praying and veiling. And many campaigns seem to rake in a lot of support as they reinforce the Islamic banner. Such a support can materialize into successful election of the candidate provided that an electoral poll takes place. However, not all scholars agree with the supposed positive correlation between democracy and Islam. Many scholars argue that democracy and Islam are incompatible. To make a statement about the issue requires serious study into the current air prevailing across the Arab world while also seeking guidance from the theoretical frameworks. Political Islam is usually viewed as a conflicting concept to secularism or other liberal forms of democracy. However, in the Arab world, it is almost impossible to eliminate religion from political systems. The events of the Arab spring demonstrated the need to reconsid er the relationship between Islam and democracy as ideological rivals. Individual protests during the Arab spring grew immensely strong eventually changing the political system from authoritarian to democratic. More

General course on philosophy Essay Example for Free

General course on philosophy Essay The world is comprised of various types of personalities and my personal experience can attest to that. My class is composed of young male and female adults of varying shapes, sizes, heights and colors. During class, I could also imagine that our instructor would perceive us as a sea of hues, all blending together within the space of the classroom. If our instructor did not focus of each one of our faces, it would be impossible for him to differentiate each one of us because we get along well enough to proceed and complete each classroom meeting. Despite the nature of viscosity of our identities, there are also times when certain members of our class would go to opposite directions, especially when philosophical concepts are being discussed. When our instructor would present a controversial topic such as euthanasia, there would be at least three distinct responses from our class. In general, there would be the group that would approve of the concept and the other group would extend an outright disapproval of the topic. The third yet silent group would be that of the neutral ones, who are always known to be nonreactive amidst all the outbursts around them. One should understand that the variations in the responses of the members of our class are not simply comprised of three general reactions. Our instructor is aware that each broad group can be further differentiated according to the principles and beliefs of each individual. For example, if euthanasia were approved in the entire country, the members of the group that is against euthanasia would aggressively react to this. The implementation of euthanasia could be equivalent to the crumbling of their world, as they would envision deaths that are at the mercy of physicians and other healthcare personnel. Looking closer into the reasons behind the disapproval of these individuals to euthanasia may be different for each individual. It is possible that one student disapproves of euthanasia because he is a strong believer of the Catholic religion, which raises the bar in terms of the value of life. Another student may not be in support of the concept of euthanasia because he has lost a loved one through such medical-ethical approach. It is also possible that another student disapproves the topic of euthanasia because his estranged father is a physician who actively participates in such technique, and thus his disagreement is not really about the topic but against his former role model. In order to shed more detail into the finer variations behind the reactions, the instructor should thus know each one of the members of the class. The class is big, as it is mainly a general course on philosophy and thus there are around 200 students in the room. When the instructor walks over to the podium and starts his lecture for the day, our eyes may seem to be tiny lights that would flicker at the very point when he utters a serious topic that needs to be discussed for an hour. He may or may not push some buttons in some of us, resulting in our reactions of support and condemnation. As for the other explosive topics, it may not be a simple button pushing for a number of students, but more of shoving a concept to our faces and asking us to express of thoughts and ideas. The course may be considered as general subject for undergraduate students, yet little do we know that we are unconsciously learning skills on how to analyze concepts. More importantly, these classroom discussions could pave the way to a clear journey for all of us, as we start our movement through an endless tunnel. It may be dark inside this tunnel of the unknown, yet after this long walk, there would be light at the end of the tunnel, leading us to a place that would cushion our identities and provide us slumber. PART II A metaphor can affect a person’s emotions because it allows the writer to symbolize his ideas using things, as well as adjectives, in order that the reader may have a better feel of the narration. A metaphor therefore facilitates in the cognition of an idea, thing or event that the writer wants to describe. This form of language can increase the impact of a narration because it can fully describe thoughts, as well as actions, by the use of transference (Hovecses, 2010). This approach allows the writer to define a certain topic through the use of comparison of two concepts that are generally considered as fully dissimilar yet may be the same in some aspect, viewpoint or perception. A metaphor can affect a person’s emotions because it assists in describing a topic through the use of descriptors of another matter (Wormeli, 2009). It should be understood that the other matter could be something else that is totally different from the topic in mind, yet the application of the descriptors of this matter can increase the weight and impact of the topic in focus. It is probably human nature to employ certain descriptors of one thing in order to provide information on another topic. The use of metaphor allows the narrator to transfer certain features that are unique to one item onto the topic of interest, resulting in a better understanding of the idea that needs to be conveyed. A simple example of a metaphor that could stimulate the emotions of a reader is to use items that are important to the reader, such as the words life, love and world. When a small item means so much to a certain person, the writer could signify this importance by claiming that this small item is equivalent to the life of that person. Once the reader sees this description, he will then feel that the item being presented is indeed so important, thus influencing his emotions to go with the narration. Language can empower or limit the expression of our thoughts because it allows the writer to use analogy in describing a certain topic (Kennedy Gioia, 2009). The writer is therefore given the freedom to choose which words to employ for his narration. If the writer chooses to use strong words, his ideas are then delivered with great impact, influencing the reader to perceive the same emotions that the writer feels about the topic. On the other hand, a writer may employ subtle words when he feels that there is no need to purposely impart strong emotions regarding a specific matter. Language is therefore a strong tool because it could sway the reader into any direction that the writer wants provide. Every writer has a large reservoir of words that he could employ when describing or explaining a particular topic. In narration, language can be forceful if there is a need to emphasize a certain emotion. Language is empowered through the use of metaphors and other forms of speech because it allows the writer to represent certain topics by analogy (Applebee et al. , 2005). It focuses on describing a certain topic by tapping on the perceptions of the reader through the use of symbolism and analogy. The choice of words that generate a sentence may impact a reader because the writer has the capacity of employ analogy in presenting his ideas. He is capable of identifying one topic by describing features of a separate item, using the latter’s features to emphasize certain points of the former topic. Language is thus a powerful tool that could affect the perceptions and emotions of readers and this is mainly based on the writer’s capacity to apply certain form of speech such as metaphors and similes. Language can take the reader to a place where the writer has been, without physically going to that place. This successful and complete narration of a certain place mainly depends on the capacity of the writer to select words that would fully convey how he feels and sees in the place of interest. It is possible to perceive all the information that we create if we use the correct words that would impart the same effect on the reader. If we would like an audience to feel what we are actually feeling, we can use two general approaches. One approach would be to describe that condition in a straightforward manner, expressing the actual emotion. Another approach would be to employ metaphors, which assist in describing certain topics through the use of analogy. We can therefore present features that are inherent in other matters yet when applied as a descriptor for our topic, it purposefully imparts a sensation in the reader. Metaphors employed as form of speech are thus very helpful in describing and imparting certain emotions that the reader may be directly feel, yet when presented through the use of transference and analogy, could be equivalent to what the writer actually feels. In order to deliver a complete description of a certain topic, we should initially describe the general environment of the topic. For example, if we are describing a person, then the general physical features from a farther point of view should first be presented. These features may include the adjectives such as tall or short in height, lean or heavy in body size and so on. Once this has been provided, finer details of the individual can then be presented, such as wide eyes, or puckered lips or unkempt hair. The organization of the presentation of details of a certain topic is essential in conveying a message to the reader or the audience. This organization of information could significantly influence the reader’s understanding and perception of the topic being presented. If the writer or narrator does not employ this approach, the reader may not fully comprehend the scenario or the topic that is being presented. A disorganized delivery of information to the audience may therefore result in a different understand, emotion and perception of the topic and it may be totally different from what the writer intended to convey. REFERENCES Applebee, A. N. , Bermudez, A. B. Blau, S. (2005). The language of literature. San Francisco: Holt MacDougal, 1548 pages. Hovecses, Z. (2010). Metaphor: A practical introduction, 2nd ed. London: Oxford University Press, 400 pages. Kennedy, X. J. Gioia, D. (2009). Literature: An introduction to fiction, poetry, drama and writing. Los Angeles: Longman Publishers, 2256 pages. Wormeli, R. (2009). Metaphors and analogies: Power tools for teaching any subject. New York: Stenhouse Publishers, 264 pages.

Clinical case scenario assignment

Clinical case scenario assignment The impact of oral conditions on an individuals quality of life can be profound, more so when they are increased risk patients such as the elderly or those with Down syndrome. These individuals experience the same dental problems as the general population; however, poor oral health may add an additional burden, whereas good oral health has benefits in that it can improve general health, social acceptability, self-esteem and quality of life (Fiske, Griffiths, Jamieson, Manger, 2000). When formulating an oral health care plan for higher risk patients, it is valuable to have a general knowledge of how to treat such cases. This assessment will explore two clinical case scenarios and the process through which each treatment plan is developed. Furthermore, the importance of providing a patient with quality care, rather than merely treatment, will be explored. CASE 1 Appointment 1: Complete Initial Assessment Take medical history According to Duggal, Hosy, and Welbury (2005, p.42), taking a comprehensive case history is an â€Å"essential prelude to clinical examination, diagnosis, and treatment planning†, and also plays a role in establishing a relationship with the patient. In this case the patient is a thirteen year old female with Down syndrome, a genetic disorder that ranges in severity with unique characteristics that can influence dental care (Pilcher, 1998). It is associated with physical and medical conditions such as cardiac defects, compromised immune system, and upper respiratory infections (MacDonald Avery, 2000). Dental consideration The history reveals that the patient received surgery for a cardiac abnormality at birth, and does not require antibiotic cover for dental treatment. The National Heart Foundation of New Zealand (2009) state that antibacterial cover is given as a prophylactic measure to prevent endocarditis; a serious and potentially fatal infection that affects the endocardium when bacteria is transported through the blood stream from the mouth because of dental work. Although prophylaxis is not necessary, consultation with the patients physician is crucial to determine any underlying medical conditions that concern her dental treatment. According to Pilcher (1998) the eruption of teeth in persons with Down syndrome is usually delayed, may occur in an unusual order and there is an extremely high rate of missing teeth in both the primary and permanent dentitions. Therefore, it is important to maintain the primary dentition for as long as possible. Additionally, The National Institute of Dental and Craniofacial Research (NIDCR) (2010) state that patients with Down syndrome can experience rapid destructive periodontal disease thought to be a result of their lowered host immune response. Other related factors include abnormal tooth morphology with an increased likelihood of smaller or conical roots, bruxism, malocclusion, and poor oral hygiene (Boyd, Quick, Murray, 2004). Therefore, good homecare is vital to manage periodontal disease and carious lesions. The mental capability of people with Down syndrome can vary widely (NIDCR, 2010), which is why as a health professional it is important to perceive how much information the patient is able to comprehend. Education should be given to the family and caregiver to ensure optimal homecare is provided. Plaque index Taking a plaque score is a quick and useful way for a dental provider to assess oral hygiene by estimating the tooth surface covered with debris and/or calculus (Wilkins, 2009). The patient has plaque deposits along the gingival margins of many tooth surfaces and calculus deposits on the lingual surfaces of the lower anterior teeth indicating poor oral hygiene. Periodontal probing It is described that the patient has red and inflamed gingival tissues with the worst area associated with the upper anterior teeth. This is likely to be a result of mouth breathing which is common in patients with Down syndrome due to a small nasal airway and incompetent lips (Pilcher, 1998). Periodontal charting will determine whether the condition is gingivitis which is reversible or periodontitis. If there are periodontal pocket depths greater than 3mm, bone loss and root surface involvement, a more extensive treatment will be required (Wilkins, 2009). Record examination and dental charting Upper permanent lateral incisors appear to be absent Upper deciduous canines show no mobility permanent canines not visible Mesial marginal ridge of 75 broken down as a result of dental caries and is symptomless Fistula buccal to 74 Permanent incisors and first molars show signs of mild to moderate hypoplasia Radiographs Bitewing radiographs should be taken to check for bone levels, calculus, overhangs of restorations, and carious lesions in the posterior teeth. An orthopantomogram (OPG) will determine the presence and position of permanent teeth and assess growth and development as well as other pathology (Cameron Widmer, 2003). Additionally, a periapical radiograph will be necessary for pre-operative assessment of tooth 74 and 75 to determine the origin of the fistula. Diagnosis Abscessed tooth (74 or 75 depending on radiographs) 75 has dental caries with pulpal involvement Periodontal disease (depending on pocket depth) Differential diagnosis: Severe plaque-induced gingivitis or Chronic periodontitis Mild to moderate molar incisor hypomineralisation hypoplasia Oral health education and instruction The patient has poor plaque control and therefore should be taught brushing and flossing techniques using the tell/show/do method so the dental provider can see how well the patient and parent or caregiver understand what is being instructed. She should be advised to brush at least twice a day and floss daily, as well as brush the tongue and gingiva. The use of an electric toothbrush and floss holders should be recommended as those with Down syndrome often have limited manual dexterity (Sacks Buckley, 2003). Additionally, a high concentration of fluoride such as Neutrofluor 5000 Plus toothpaste is recommended for daily use by patients with high risk of dental caries which Wilkins states will promote remineralisation and help strengthen the teeth (2009). Dietary advice Diet should be discussed with a focus on finding if the patient has a lot of sugar in her diet and educating her on the effects of cariogenic foods, perhaps using Stephans curve to explain depending on her level of understanding. The patient should be encouraged to eat cheese, unsweetened yogurt, milk and other dairy products as they contain calcium, phosphorous and magnesium which helps protect dental health (The Dairy Council Digest, 2000). Moreover, sugary and acidic drinks should be minimised as they can cause enamel erosion. It is vital the parent or caregiver receive this information as they may have a significant influence over her diet and pamphlets taken home to serve as a reference or reminder. Formulate a treatment plan Cameron and Widmer (2003, p. 6) state that treatment should be performed in the following order: (1) Emergency care and relief of pain, (2) preventive care, (3) surgical treatment, (4) restorative treatment, (5) orthodontic treatment, (6) extensive restorative or further surgical management, and (7) recall and review. Once this has been completed it should be discussed with both the patient and her parents or caregiver and informed consent must be given. Appointment 2: The amalgam restoration in the 74 is described as appearing sound but there is a fistula present buccal to the tooth. A fistula is a channel allowing excess exudate to drain from an abscess (Ibsen Phelan, 2004). Although this can be painless, it is considered an emergency and should be dealt with before any dental treatment. It is likely that the fistula is related to the 75 which is broken down due to dental caries. When the marginal ridge of a primary molar is broken down due to dental caries, the pulp is consistently exposed (Cameron Widmer, 2003). Although the 75 is described as symptomless, this may be because the drained exudate is relieving pressure from inside the tooth meaning it is less likely to be painful. If the PA radiograph confirms that the carious lesion on tooth 75 has pulpal involvement, it will be treated with either pulpectomy or extraction. Pulpectomy: If tooth 35 is not present, the 75 should be preserved and a referral to a dentist to perform root canal therapy will be given. It is advised that a stainless steel crown be placed as according to Cameron and Widmer (2003) this is the strongest possible final restoration following pulpectomy and will be necessary to preserve the 75 for as long as possible. Extraction: If 35 is present, the 75 should be extracted. However if 35 is not ready to erupt, a space maintainer is recommended to preserve the gap after extraction of 75 to prevent the adjacent teeth drifting into its space. This will enable the 35 to erupt in the proper position and prevent malocclusion in the future and will require a referral to an orthodontist. The amalgam restoration on tooth 74 appears sound and depending on radiograph results, if there is no abscess on tooth 74 and 34 is present, no treatment is needed on this tooth. If there is abscess on 74, the same treatment for abscessed 75 is indicated. Appointment 3: Reassess oral hygiene: Reinforce good behaviour and make necessary recommendations for continual improvement. Scale and polish: The aim of this is to remove as much bacteria from the oral cavity as possible and have a healthy mouth to perform restorative work in. According to Stefanac and Nesbit (2001), when planning treatment, it is sensible to put the least invasive treatments first when possible so that the patient can familiarise themselves with the dental setting and feel comfortable. (Pilcher, 1998) states that having a patient with Down syndrome that is relaxed and at ease can assists with cooperation in the chair and useful for future appointments. Hypoplasia: The permanent incisors and first molars are described as having mild to moderate hypoplasia. Enamel hypoplasia is a deficiency in quantity of enamel that results in a defect of contour in the surface (Cameron Widmer, 2003). This defect can cause tooth sensitivity, may be unsightly and more susceptible to dental caries. A compromised immune system is a characteristic of most individuals with Down syndrome which contributes to a higher rate of infections (Pilcher, 1998) and it is possible that the hypoplasia is related to the patients condition. Because of the teeth involved, this is likely to be Molar Incisor Hypomineralisation (MIH) which is defined as a hypomineralisation of systemic origin of one to four permanent first molars frequently associated with affected incisors (Weerheijm, 2003). It is important that MIH be treated as soon as identified to minimise the heightened risk of dental caries and prevent the patient from experiencing tooth sensitivity. Treatment options depend on the severity of the hypoplasia and the symptoms associated with it (University of Iowa, n.d.). It should be noted that the worst area of inflamed gingival tissue is associated with the upper anterior teeth which could be a result of the patient avoiding these as they are sensitive or painful to brush. It may be useful to ask the patient about this so that education can be given on the importance of brushing all areas and the problem can be addressed. In this case scenario, the most effective treatment would be the application of a fluoride varnish to the hypoplastic areas followed by resin-based sealants. Alternatively, if ideal moisture control cannot be achieved, glass ionomer sealant can be used. According to Subramaniam, Konde, and Mandanna (2008), the retention of resin sealant is seen to be superior of that of the glass ionomer which should be treated as temporary only. Cameron and Widmer (2003) explain that localised defects may be restored with composite resin and pitting defects may require stain removal with either rotary instruments or some sort of bleaching system. Furthermore, if there is sensitivity, the use of tooth mousse products should be advised to assist with remineralisation and desensitisation of the teeth (Walsh, 2007). Appointment 4: Remove IRM: Although the temporary restoration on tooth 65 is sound, it should be replaced with a permanent filling as Mount and Hume state that zinc oxide eugenol hydrolyses in time and should not be used for over six months (1998). Additionally, composite should not be used because the release of eugenol will inhibit the polymerisation of the composite resin (Mount Hume, 1998). Therefore, an amalgam restoration should be placed on tooth 65 if the radiograph shows tooth 25 is present. If the permanent successor is not present, the temporary restoration should be replaced with a permanent restoration like a stainless steel crown and may require pulpotomy depending on how far the carious lesion has progressed in the tooth. Recall: A three month recall should be arranged as the patient is high risk for caries and periodontal disease. It is essential that optimal oral hygiene is maintained and well monitored by the dental practitioner. CASE 2 The human needs of each older adult must be assessed individually and not based on preconceived stereotypes as the healthcare needs of elderly persons can vary from health to severe illness (Darby Walsh, 2010). According to Fiske et al. (2000) there is a general trend for a reduction in edentulism and an increase in the retention of natural teeth. This attitude leads to more people wanting to understand how to best maintain good oral hygiene and it is the role of the dental provider to assist these individuals with appropriate educational instructions. In this clinical case scenario the patient is an 81 year old man who comes to the clinic for dental hygiene care. Appointment 1: Complete Initial Assessment Take medical history The patient shows early signs of Parkinsons disease; a progressive neurodegenerative disorder of neurons that produce dopamine (Little, Falace, Miller, Rhodus, 2008). Loss of these neurons results in characteristic motor disturbances including a resting tremor, muscular rigidity, bradykinesia and postural instability. It is common for those with Parkinsons disease to also experience xerostomia as a result of polypharmacy and is significant as this increases the risk of periodontal disease and coronal and root surface caries (Wilkins, 2009). It is described that the patient has mild congestive heart failure which The American Heart Association (2011) state is the inability of the heart to supply sufficient blood flow to meet the needs of the body and can be a result of myocardial infarction and other forms of ischemic heart disease, hypertension, valvular heart disease, and cardiomyopathy. As the heart failure is mild, he will not require antibiotic prophylaxis for dental treatment however it is wise to confirm this with his physician. The patient is taking nitroglycerin tablets under the tongue to relieve chest pain several times a week. It is taken sublingually for immediate relief of chest pain by reducing the oxygen need of the heart and may cause dizziness, light-headedness and fainting and may cause xerostomia (Medline Plus, 2011). The patient has stiffness in the fingers of his dominant right hand due to arthritis; an inflammatory or degenerative process which involves the joints (Arthritis Foundation, 2011). Patients with arthritis may experience pain, swelling, limitation of motion and deformity of the joints and may find it difficult to keep an open mouth for long dental procedures. Oral hygiene assessment The patient has poor oral hygiene. It is likely that due to his arthritis which affects the fingers in his right hand, he is not adequately brushing quadrants 2 and 3. It should be noted that there are signs of abrasion lesions on the buccal surfaces of quadrants 1 and 4. Abrasion is the mechanical wearing away of tooth substance by forces other than mastication (Wilkins, 2009, p.272) and this is likely to be a result of the patient vigorously brushing horizontally. Furthermore, he has heavy plaque deposits on the lower lingual and all interproximal which indicate interproximal plaque removal methods must be instructed. Periodontal probing All periodontal pockets measure 1-3 mm except for 26 mesial with a probing depth of 4mm indicating generally good periodontal health. Record exam and dental charting 27 moderately filled teeth present with tooth 25 lost due to a fractured root Gingival recession is present with 1-2 mm areas of root surfaces exposed on most teeth. A couple of theses surfaces present with light brown marks that are soft to touch Tooth 26 shows sign of periodontal bone loss palatally as well as tipping and drifting forward into the space left by 25 Heavy plaque deposits on the buccal surfaces of quadrant 2 and quadrant 3 as well as lower lingual and all interproximal surfaces Very light plaque deposits on the buccal surfaces of quadrant 1 and quadrant 4 Some surfaces with light plaque show signs of abrasion Radiographs To complete the initial assessment, bitewing radiographs and an OPG should be taken. This can give the dental provider information on alveolar bone levels, plaque retention factors, interproximal and secondary caries, furcation defects, subgingival calculus and additional pathology (Tugnail, Clerehugh, Hirschmann, 1999). A periapical radiograph of tooth 26 is taken to examine bone loss and to check for subgingival calculus and root surface caries. Risk assessment The patient is at high risk of developing dental caries and moderate risk for periodontal disease due to his medical history. His lack of manual dexterity associated with Parkinsons disease and arthritis, makes adequate plaque removal difficult to achieve. Moreover, due to medications, he is more likely to have xerostomia which will increase his risk of periodontal disease and dental caries, especially root surface caries (Wilkins, 1999). Diagnosis Moderate plaque-induced gingivitis Localised moderate chronic periodontitis on tooth 26 due to tilting Generalised gingival recession Toothbrush abrasion Areas of root surface caries Oral health education and oral hygiene instruction Perhaps the most important treatment a dental provider can give is that of oral health education, information, promotion and counselling. This enables the patient to maintain good oral hygiene themselves and prevent further disease processes. In this clinical case scenario it is vital to advise the patient on homecare which will address his risks of dental caries and periodontal disease. According to Darby Walsh (2010) caries control and prevention activities must address three interrelated factors: (1) removal of bacterial plaque and biofilm, (2) reduction of refined carbohydrates and snacking in the diet, and (3) use of topical fluoride. The patients oral hygiene activities are compromised due to the arthritis in his right hand and in the future will be further affected by his developing Parkinsons disease. His poor oral hygiene should be addressed firstly by recommending the use of adaptive devices. Using a powered toothbrush and modifications of handle size, width, and grip, will provide assistance for the patient with thorough plaque removal. It should also be suggested that the patient use floss holders to ensure the effective removal of interproximal plaque or alternatively, interproximal brushes can be recommended if the patient is able to use them effectively. Poor dietary practices involving the over consumption of soft, retentive refined carbohydrates and frequent snacking patterns are common among older adults (Darby Walsh, 2010). The dental provider has an obligation to educate the patient on optimum food choices and nutritional patterns to promote oral health. It could also be beneficial to speak with any caregivers regarding the patients diet and make suggestions to prevent further carious lesions. Replacing sweet snacks with cheese and crackers or substituting sugar-free hard candy for mints are examples of two specific dietary interventions that may be more easily and realistically implemented for older adults. Furthermore, the frequent use of topical fluoride products for home use should be encouraged. A high fluoride toothpaste (5,000 ppm) will help to strengthen enamel and aid in the prevention of dental caries and will cause little change in the routine of the patient. For management of xerostomia, the patient is advised to take frequent sips of water and avoid the consumption of alcoholic drinks which will further dry out the oral mucosa. Sugar-free chewing gums will help stimulate the saliva but if the patient experiences difficulty in chewing because of arthritis, this may not be advisable. Additionally, tooth mousse should be recommended to provide lubrication and assist in preventing root surface caries (Walsh, 2007). If the patient is unable to provide adequate home care, alternative solutions should be provided, such as the introduction of the Collis curve toothbrush, assisted brushing, or chlorhexidine rinses (Little et al., 2008) These aids facilitate self-care and hence self-determination for the patient. The patient may suffer from mild dementia and due to his age may have difficulty remembering everything discussed at the initial appointment therefore all instruction should be written down and passed to him or a caregiver. Formulate a treatment plan Appointments should be kept short and scheduled in the morning or early afternoon when patient is less tired or whenever suits his needs best. Once a care plan has been completed it should be discussed with the patient and informed consent must be given. Appointment 2: Re-assess oral hygiene Quadrant scaling is recommended in case a full debridement cannot be completed in one appointment Reinforce good oral hygiene Appointment 3: Re-assess oral hygiene Complete scaling and full mouth polish Reinforce good oral hygiene A referral letter to the patients dentist is to be written and given to him regarding the restorative work required on the root caries present in his mouth. The importance of treatment should be explained to the patient and if necessary his caregivers should also be advised of the work required. As a preventive method, fluoride varnish should be applied to the other receded areas to help remineralise the enamel and reduce any sensitivity the patient may be experiencing (Wilkins, 2009). Recall: Upon completion of treatment for this patient, a three month recall should be arranged as his medical history indicates he may require regular maintenance in the future. This is also a good chance to evaluate the outcome and effectiveness of the previous treatment. According to Stefanac and Nesbit (2001) an oral health care plan is about balancing the ideal with the practical, and emphasis should be placed on the patient and their needs which ought to drive the treatment planning process. There has been a shift in treatment given by dental providers, where the focus is now on not only restoring the problem in the clinic, but educating the patient on how they can best achieve optimal oral health themselves. This assessment has investigated two different clinical case scenarios and discussed oral health care plans for each. In addition, it has examined the importance of treating each patient as an individual with specific needs and the significance of providing them with methods or self-care.

Stereo-typical Characteristics of the Old West Lawman :: Sociology Essays Research Papers

Marshall Matt Dillon - Stereo-typical Characteristics of the Old West Lawman The sound of pounding horse hooves and the piercing ricochet of a gunshot break the silence over the radio. As theme music begins to play, an announcers voice is heard, Around Dodge City and in the territory out West, theres just one way to handle the killers and the spoilers, and thats with the US Marshall and the smell of gun smoke. (Radio Spirits) Thus begins the program Gunsmoke, a program in which the hero, United States Marshall Matt Dillon, personifies the stereotypical old-west lawman through his lonely, compassionate, and judge-mental character. At the beginning of every episode, Dillon begins by making an opening statement, where he identifies himself as, Matt Dillon, United States Marshall a man watchful and a little lonely. (Radio Spirits) In Johnny Reb, this loneliness is portrayed though a private conversation with Kitty, the saloon manager. In this dialogue, Kitty is expressing her desires for a normal life with a house, husband, and children. These desires, while mutual for both Dillon and Kitty are fantasies because they both know that they will never get out of the West. While, A body does get mighty lonely (Johnny Reb), Dillon understand that the western man is a wanderer, always searching for that mythical pot-of-gold at the end of the rainbow. Also his life consists of co-existing with other lawmen, gunfighters, and saloon girls for friends and of remembrances of loved ones spread across the country, seldom heard from. (Ben Tollivers Stud). Possibly because they were lonely, or because they were gentlemen, the typical western lawman was very compassionate. The listener sees this trait through Matt Dillon in virtually every episode. In Ben Tollivers Stud Dillons compassion was toward Tolliver who was mistreated by his former boss. It was shown toward Mrs. Crail in Johnny Reb whom he thought was getting robbed by an outlaw, and in Twenty-twenty toward his friend Troy Carver. Dillon felt so much compassion in this particular episode that it led him to break his promise not to get involved in Carvers business, in an attempt to save his life. Yet even though Dillon was compassionate, he was also quite judge-mental, another characteristic of the typical hero of the West. By falsely assuming men killed other men (Ben Tollivers Stud), and automatically assuming that if a man has a record he is up to no good and a liar, (Johnny Reb) Dillon portrays his judgments in a negative manner.

Writing Technology :: Writing Technology Technological Papers

Writing Technology One definition of writing is to form letters, words or symbols on a surface such as paper with an instrument such as a pen (www.dictionary.com). To many this is an obvious definition. We use paper, pens and pencils almost every day of our lives. It has become so much the norm that we take it for granted and don‘t give it a second thought. But in retrospect, writing can be looked at as a technology that has come a long way and that is more complex than we may know. When given the task to write 20 words or less by using something natural, I found it to be very difficult. I thought long and hard. Without using something that was created by someone such as a pen, I came up with very few ideas . Not only did I have to find the instrument to write with, but also the surface on which to write upon. What in the world around us today is truly natural? Not much is the conclusion I came to, and being as it is winter, a whole lot less with all the snow. At first I thought about using my nails and writing into a piece of fruit. However, I would have to go to the store to get a piece of fruit because of the season, and stores aren’t really natural. I really wanted to do this project with as little use of things unnatural as possible. Than I thought about doing something with fire and ashes, but I don’t know how to start a fire using only two sticks. There were plenty of matches around, but like the store, those aren’t natural either. My final choice was to use a stick to write in the snow with, since there was plenty of both around. However, I had difficulty getting a stick to break off the frozen branches of the trees. So, what I ended up choosing as my instrument was an icicle. The icicle was very cold in my hands, and very uncomfortable. I could feel it melting as I stood there thinking of what to write. So I thought quickly, and proceeded to write â€Å"hi† in the snow. I chose â€Å"hi† because it was a short greeting that is commonly known. As I etched my word into the snow, I found it very smooth to move through. At first I hadn’t written deep enough for the word to be readable, so I had to trace it over again , this time with my icicle halfway into the snow.

starbucks history :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  For one of my selections for buying stock, I invested into Starbucks, this company has attracted me with their wonders of different coffees, and I knew many others were interested in the very popular coffee company. Starbucks all started 1971 in Seattle Washington. With three men which were Jerry Baldwin, Zev Siegel and Gordon Bowker each of them put in one thousand three hundred and fifty dollars along with a barrowed five thousand from the bank to start up there small coffee shop in pick place market, witch is located in down town Seattle. The name for this company was inspired from the character Starbuck from Moby Dick; this character was a coffee lover. There close friend designed there well known logo. These men never thought of this small company to get large they just thought of it as a small coffee shop. Out of all three men Siegel was the only one that work at it full time. The men depened on a man named Alfred Peet for there coffee beans but soon then st arted there own blends of coffee beans. With in a year opening the first store they were able to open a second store. When the 1980’s rolled around, it was a thriving company, in the Seattle area. However, the co-founders began to have other interests and were involved in other careers simultaneously. Despite that, the company was about to undergo a major turning point. A man by the name of Howard Schultz started to pursue an interest in the company. He noticed that the coffee shop had a wonderful environment. He started asking a questions and becoming more and more interested by every moment. He loved how the founders had so much knowledge on the coffee and each blend. In 1982, Schultz became director of retail operation. This was just the start to a new phase with the company.   Ã‚  Ã‚  Ã‚  Ã‚  When Shultz took over, this started the beginning of a new era. He spent all his time at the stores trying to make every thing perfect in every way. He started with the employees, making the environment so friendly for every type of coffee lover. One of his biggest ideas came from visiting Italy and going to a coffee shop and seeing the idea of a espresso bar. That no longer would it be just an in and out coffee shop, but event and environment that drew many different types of people.

The Future of WiMAX and its Effect on Our Lives

On the bad side, which include health concerns that come with these radiation waves, which can affect people's health. In general, what does WiMAX technology mean? This is very important to know. To explain it well, everyone has to know that WiMAX is not the same as Wi-Fi. In the past, the internet was not spread like it is now so this technology was not well-known. Nowadays, it is bigger and effective in society, because this science has become more important than before. In fact, what changed is that now people become more interested in these technologies and look for more development in this field.With development in this field, companies start to invent new technology that can be better than and challenge Wi-Fi, such as WiMAX and LTE. An example of people who might be interested in WiMAX is college students who spend a lot of time working on their projects or research. So, if the education institutions themselves start to provide this technology to their students, they can make t he learning experience much better (Tandle, 2010). This spread of technology means more range of wireless internet on-campus, so the students have a better chance to access the internet while learning.The development of WiMAX can be helpful for any group of people. WiMAX is not the only technology in the wireless field; there is also a big challenge with LTE. WiMAX technology descended from Wi-Fi, so it is not part of cellular technology. Even though WiMAX has become a challenger to LTE, LTE is still under cellular technologies. WiMAX starts with home connections and delivers a broadband connection to houses, instead of running expensive cables across long distance hey promised much better compatibility with cellphones. In addition, the LTE standard was approved in America as the first LTE network (Segan, 2012).Effect of WiMAX on our Life According to the HowStuffWorks website, WiMAX provides worldwide access, and the idea of this technology is to make the broadband internet wider t han Wi-Fi. Another way to describe it is that can access the internet not only from the hotspot near you, but also in a wide range.

Art and Architecture in Daily Life Essay

When searching for an architecture piece that would catch the eye, there were many to pick from. Finding one that would be remembered that was a little harder, but never the less the one that was found was so beautiful and very inspiring. There are many buildings that are built for different reasons such as shelter, work, play, religious worship, or just for a personal relaxation. An architect by the name of Frank Lloyd Wright was a man who was very famous for his work, especially the creation called Fallingwater. Frank Lloyd Wright designed Fallingwater in 1935; which was known for its dynamism and for its integration. The construction would begin a year later and would not be completed until 1939. When finished Fallingwater would be one of Wright’s finest creations, this would be due to Smithsonian Magazine counting Fallingwater as one of the 28 places to see before you die (Colman, 2012). The website, http://www. openculture. com/2012/01/fallingwater-one-of-frank-lloyd-wrights-finest-creations-animated. html shows a mini video of how the building was created and built. After reading about this creation and watching the video, visiting this location will be on my list of places to visit and explore with my children so they will be able to see the beauty of what you can do with nature. Fallingwater was an Organic Architecture home that Wright created for a family who owned a department store in Pittsburgh by the name of Edgar F. Kaufmann. They wanted to have a home in a private setting, which would epitomize man living in harmony with nature. And what better place than sitting in the middle of the wilderness surround by 5000 acres of nature. The home was built with local sandstone, reinforced concrete, steel and glass and hangs out over a beautiful waterfall on Bear Run that is surrounded by rocks, trees and rhododendrons (Powell, 2012). Wright had a strong passion for Japanese architecture and this had reflected in the design of the Fallingwater. The interior also remained true to his vision which included cantilevered desks, earth-toned built-in sofas, polished stone floors, and large casement windows that allowed the outdoors to just shine in. The stone fireplace in the home was a boulder on the hill that was

Introduction To The Solar System Environmental Sciences Essay

A. This essay will briefly depict the planets and how they relate to the planet Earth. The surface and interior geology, the ambiance, and other general belongingss will demo how the other planets are non unlike the Earth. B. How do the alone features of each major solar system organic structure comparison with the planet Earth chiefly the mass and denseness, and the composing? 2. The Planets & A ; Other Objects. The charted parts of the Solar System consist of the Sun, four tellurian inner planets, an star-shaped belt composed of little bouldery organic structures, four gas giant outer planets, and a 2nd belt, called the Kuiper belt, composed of icy objects. Beyond the Kuiper belt is conjectural Oort cloud. The interior Solar System is the traditional name for the part consisting the tellurian planets and asteroids. Composed chiefly of silicates and metals, the objects of the inner Solar System crowd really closely to the Sun ; the radius of this full part is shorter than the distance between Jupiter and Saturn. The four inner or tellurian planets have dense, bouldery composings, few or no Moons, and no pealing systems. They are composed mostly of minerals with high runing points, such as the silicates which form their solid crusts and semi-liquid mantles, and metals such as Fe and Ni, which form their nucleuss. Three of the four inner planets ( Venus, Ear th and Mars ) have important ambiances ; all have impact craters and tectonic surface characteristics such as rift vales and vents. Our investigation, the ESP begins the geographic expedition of the solar system with the 3rd planet from the Sun, the Earth and the 5th largest in our solar system. Astronomers normally measure distances within the Solar System in astronomical units ( AU ) . One AU is the approximative distance between the Earth and the Sun or approximately 149,598,000 kilometers ( 93,000,000 myocardial infarction ) . A. The Earth. The mass of the Earth is 5.98 E24 kilogram with a average denseness of 5,520 kg/m3 and the densest of any planet in the solar system. Earth ‘s diameter is merely a few 100 kilometres larger than that of Venus, and considered our sister planet. Earth is the largest of the interior planets, the lone one planet known to hold current geological activity, although there are Moons of Jupiter and Saturn that have seismal activity, and the lone planet known to hold life. Its liquid hydrosphere is alone among the tellurian planets, and it is besides the lone planet where home base tectonics has been observed, unlike Venus where there is no grounds of home base tectonics. Earth ‘s ambiance is radically different from those of the other planets, holding been altered by the presence of life ( in two O bring forthing events ) to incorporate 21 % free O. It has one orbiter, the Moon, the lone big orbiter of a tellurian planet in the Solar System so big as compared to it à ¢â‚¬Ëœs planet. No other moon-planet has this size ratio. The four seasons are a consequence of Earth ‘s axis of rotary motion being tilted 23.45 grades with regard to the plane of Earth ‘s orbit around the Sun. During portion of the twelvemonth, the Northern hemisphere is tilted toward the Sun and the southern hemisphere is tilted off, bring forthing summer in the North and winter in the South. Six months subsequently, the state of affairs is reversed. During March and September, when spring and autumn Begin in the Northern hemisphere, both hemispheres receive about equal sums of solar light. Earth ‘s planetary ocean, which covers about 70 per centum of the planet ‘s surface, has an mean deepness of about 4 kilometers ( 2.5 stat mis ) . Fresh H2O exists in the liquid stage merely within a narrow temperature span, 32 to 212 grades Fahrenheit ( 0 to 100 grades Celsius ) . The presence and distribution of H2O vapour in the ambiance is responsible for much of Earth ‘s conditions. The Earth ‘s rapid rotary motion and run nickel-iron nucleus create the magnetic field which prevents the solar air current from making the surface ( the solar air current is a watercourse of charged atoms continuously ejected from the Sun. ) The Earth ‘s magnetic field does non melt off into infinite, but has definite boundaries. When charged atoms from the solar air current become trapped in Earth ‘s magnetic field, they collide with air molecules above our planet ‘s magnetic poles. These air molecules so begin to glow, and are known as the dawn — the northern and southern visible radiations. Earth ‘s geosphere, which includes the crust ( both continental and Oceanic ) and the upper mantle, is divided into immense home bases that are invariably traveling, and the motion is accurately determined via wireless telescopes from a stationary point such as a star. Earthquakes result when home bases grind past one another, sit up over one another, colli de to do mountains, or split and separate. The theory of gesture of the big home bases of the geosphere is known as home base tectonics. Developed within the last 40 old ages, this account has unified the consequences of centuries of survey of our planet. The Earth ‘s atmosphere consists of 78 per centum N, 21 per centum O and 1 per centum Ar and other hint ingredients. The atmosphere affects Earth ‘s long-run clime and short-run local conditions, shields us from much of the harmful radiation coming from the Sun and protects us from meteors every bit good, most of which burn up before they can strike the surface as meteorites. Before the ESP leaves the immediate locality of the Earth, ESP will get down the journey get downing with Earth ‘s Moon about 250,000 stat mis off. B. The Moon. The Earth ‘s Moon provides a more liveable planet by chairing our place planet ‘s wobble on its axis, taking to a comparatively stable clime, and making a beat that has guided worlds for 1000s of old ages. The Moon was probably formed after a Mars-sized organic structure collided with Earth about 4.5 billion old ages ago, and the ensuing dust accumulated ( or accreted ) to organize our natural orbiter. The freshly formed Moon was in a liquefied province. Within about 100 million old ages, most of the planetary â€Å" magma ocean † had crystallized, with less dense stones drifting upward and finally organizing the lunar crust. The Moon ‘s surface shows four important impact constructions and are used to day of the month objects on the Moon ; are called the Nectaris and Imbrium basins and the craters Eratosthenes and Copernicus. The Moon was foremost visited by the USSR ‘s Luna 1 and Luna 2 in 1959. These were followed by a figure of U.S. and Soviet robotic ballistic capsule. The U.S. sent three categories of robotic missions to fix the manner for human geographic expedition, the Rangers ( 1961-1965 ) were impact investigations, the Lunar Orbiters ( 1966-1967 ) mapped the surface to happen landing sites and the Surveyors ( 1966-1968 ) were soft Landers. The first human landing on the Moon was on 20 July 1969. During the Apollo missions of 1969-1972, 12 American spacemans walked on the Moon and used a Lunar Roving Vehicle to go on the surface to look into dirt mechanics, meteoroids, lunar ranging, magnetic Fieldss and the solar air current. The Apollo spacemans brought back 382 kilogram ( 842 lbs ) of stone and dirt to Earth for survey. The Moon has no internally generated magnetic field, although countries of magnetic attraction are preserved in the lunar crust, but how this occurred remains a enigma to scientific discipline. The early Moon appears non to hold had the right conditions to develop an internal dynamo, the mechanism for planetary magnetic Fieldss for the tellurian planets ; so an iron-core did non organize or hold the ability for gesture. In retrospect, no magnetic field may be a good thing as possibly there would be some interactions between the Earth ‘s magnetic filed and the Moons, when sing the unnatural size ratio between these organic structures. With no ambiance to hinder impacts, a steady rain of asteroids, meteoroids and comets strike the surface. Over one million millions of old ages, the surface has been ground up into fragments runing from immense bowlders to pulverize. About the full Moon is covered by a rubble heap of grey, powdered dust and bouldery dust called the lunar regolith. Beneath the regolith is a part of fractured bedrock referred to as the megaregolith. The ESP now leaves the Earth to travel toward the Sun and see the 2nd cupboard to the Sun, Venus our sister planet. C. Venus. From the Earth, the distance to Venus is about 23 million stat mis, and 0.723 AU from the Sun. The orbital period of Venus is about 225 Earth yearss long, while the planet ‘s sidereal rotary motion period is 243 Earth yearss, doing a Venus solar twenty-four hours about 117 Earth yearss long. Venus has no natural orbiters. The mass of Venus is 4.87 E24 kilogram and stopping point in size to Earth ( 0.815 Earth multitudes ) and, like Earth, has a thick silicate mantle around an Fe nucleus, a significant ambiance and grounds of internal geological activity. Because of the similar silicate mantle around an Fe corer, the denseness is non unlike the Earth ‘s at 5,250 kg/m2. The slow rotary motion of Venus can non bring forth a magnetic field similar to Earth ‘s, though its Fe nucleus is similar to that of the Earth and about 3,000 kilometers ( 1,900 stat mis ) in radius. Venus rotates retrograde ( east to west ) compared with Earth ‘s ( west to east ) rota ry motion. Seen from Venus, the Sun would lift in the West and set in the E. Current thought suggests that Venus was wholly resurfaced by volcanic activity 300 to 500 million old ages ago. More than 1,000 vents or volcanic centres larger than 20 kilometer ( 12 stat mis ) in diameter dot the surface. Volcanic flows have produced long, channels widening for 100s of kilometres. Venus has two big upland countries: Ishtar Terra, about the size of Australia, in the North Polar Region ; and Aphrodite Terra, about the size of South America, straddling the equator and widening for about 10,000 kilometers ( 6,000 stat mis ) . Maxwell Montes, the highest mountain on Venus and comparable to Mount Everest on Earth, is at the eastern border of Ishtar Terra. No unequivocal grounds of current geological activity has been detected on Venus, but as mentioned it has no magnetic field that would forestall depletion of its significant ambiance, which suggests that its ambiance is on a regular basis replenished by volcanic eruptions. Venus ‘ ambiance consists chiefly of C dioxide, with clouds of sulphuric acerb droplets with hint sums of H2O detected in the ambiance ( 96 % C dioxide, 3 % N, and 0.1 % H2O vapour. ) The ambiance is much drier than Earth and 90 times as dense. It is the hottest planet, with surface temperatures over 400 A °C, most likely due to the sum of nursery gases in the ambiance. The midst atmosphere traps the Sun ‘s heat, ensuing in surface temperatures higher than 880 grades Fahrenheit ( 471 grades Celsius ) . Probes that have landed on Venus survived merely a few hours before being destroyed by the unbelievable temperatures. Sulfur compounds are abundant in Venus ‘ clouds. The caustic chemical science and dense, traveling atmosphere do important surface weathering and eroding. Atmospheric lightning explosions were confirmed in 2007 by the European Venus Express satellite. On Earth, Jupiter and Saturn, lightning is associated with H2O clouds, but on Venus, it is associate d with clouds of sulphuric acid. As we leave the Venusian orbit, Earth ‘s investigation ESP continues toward the Sun and onward Mercury. D. Mercury. The closest planet to the Sun and the smallest planet ( 0.055 Earth multitudes ) , Mercury is 0.387 Gold from the Sun. Mercury has no natural orbiters, and its mass is 3.30 E23 kilogram with an mean denseness of 5,420 kg/m3. The similarity of the bouldery tellurian planets is evident. Mercury ‘s surface resembles that of Earth ‘s Moon, scarred by many impact craters ensuing from hits with meteoroids and comets. While there are countries of smooth terrain, there are besides scarps or drops, some 100s of stat mis long and surging up to a stat mi high, formed by contraction of the crust. Mercury is the 2nd densest planet after Earth, with a big metallic nucleus holding a radius of 1,800 to 1,900 kilometers ( 1,100 to 1,200 stat mis ) , approximately 75 per centum of the planet ‘s radius ( Earth ‘s nucleus is many times smaller compared to the planet ‘s diameter ) . In 2007, research workers utilizing ground-based radio detection and rangings to analyze the nucleus found grounds that it is molten ( liquid ) . Mercury ‘s outer shell, comparable to Earth ‘s outer shell ( called the mantle ) , is merely 500 to 600 kilometers ( 300 to 400 stat mis ) midst. The lone known geological characteristics besides impact craters are â€Å" wrinkle-ridges † , likely produced by a period of contraction early in its history. The Caloris Basin, one of the largest characteristics on Mercury, is about 1,550 kilometers ( 960 stat mis ) in diameter. It was the consequence of a possible star-shaped impact on the planet ‘s surface early in the sola r system ‘s history. Mercury ‘s about negligible atmosphere consists of atoms blasted off its surface by the solar air current. Though Mercury ‘s magnetic field has merely 1 per centum the strength of Earth ‘s, the field is really active. The magnetic field in the solar air current creates intense magnetic twisters that channel the fast, hot solar air current plasma down to the surface. When these ions strike the surface, they knock off impersonal atoms and direct them high into the sky where other procedures may fling them back to the surface or speed up them off from Mercury. As we leave Mercury before heading out to the deepest parts of the solar system, the ESP will do a flyover of the Sun, as the voyager investigations did around Jupiter and Saturn to increase the speed. E. Our Sun. The chief constituent of the Solar System is the Sun that contains 99.86 % of the system ‘s known mass and dominates it gravitationally. Jupiter and Saturn, the Sun ‘s two largest revolving organic structures, account for more than 90 % of the system ‘s staying mass. Most big objects in orbit around the Sun prevarication near the plane of Earth ‘s orbit, known as the ecliptic. The planets are really near to the ecliptic while comets and Kuiper belt objects are normally at significantly greater angles to it. The orbits of the planets are about round, but many comets, asteroids and objects of the Kuiper belt follow highly-elliptical orbits. The investigation ESP circles the Sun picking up speed to get down the ocean trip to Mars once more go throughing the tellurian planets. F. The Red Planet, Mars. Mars is smaller than Earth and Venus ( 0.107 Earth multitudes ) has a mass of 6.42 E23 kilogram and a average denseness of 3,940 kg/m3 ( lower than that of the other tellurian planets, ) and is 1.524 Gold from the Sun. Mars is a cold desert-like universe similar to our Southwestern States, and has the same sum of dry land. Like Earth, Mars has seasons, polar ice caps, vents, canons and conditions, but its ambiance is excessively thin for liquid H2O to be for long on the surface. There are marks of ancient inundations on Mars, but grounds for H2O now exists chiefly in icy dirt and thin clouds. Mars has two bantam natural orbiters Deimos and Phobos thought to be captured asteroids. Mars experiences seasons because of the joust of its rotational axis ( in relation to the plane of its orbit ) . Mars ‘ orbit is somewhat egg-shaped, so its distance to the Sun alterations, impacting the Martian seasons that last longer than those of Earth. The polar ice caps o n Mars grow and recede with the seasons ; layered countries near the poles suggest that the planet ‘s clime has changed more than one time. Mars is a bouldery organic structure about half the size of Earth. As with the other tellurian planets ( Mercury, Venus and Earth ) the surface of Mars has been altered by volcanism, impacts, crustal motion, and atmospheric effects such as dust storms. Volcanism in the Highlandss and fields was active more than 3 billion old ages ago, but some of the elephantine shield vents are younger, holding formed between 1 and 2 billion old ages ago. Mars has the largest volcanic mountain in the solar system, Olympus Mons, every bit good as a dramatic equatorial canon system, Valles Marineris. Mars has no planetary magnetic field, but NASA ‘s Mars Global Surveyor satellite found that countries of the Martian crust in the southern hemisphere are extremely magnetized. Obviously, these are hints of a magnetic field that remain in the planet ‘s crust from about 4 billion old ages ago. Red planets frequently appears ruddy due to a combination of the fact that its surface is comprised of iron-rich minerals that rust ( or oxidise ) and that the dust made of these minerals is kicked up into the ambiance, giving the ambiance a ruddy chromaticity every bit good. Mars possesses an ambiance of largely carbon dioxide ( seems like a natural inclination of the tellurian planets ) , and other gases ( nitrogen 3 % , and argon 1.6 % . ) The thin ambiance on Mars does non let liquid H2O to be at the surface for long, and the measure of H2O required to carve Mars ‘ great channels and inundation fields is non obvious today. Unraveling the narrative of H2O on Mars is of import to unlocking its clime history, which will assist us understand the development of all the planets. Water is believed to be an indispensable ingredient for life ; grounds of past or present H2O on Mars is expected to keep hints about whether Red planets could of all time hold been a home ground for life. In drumhead, there is grounds and good scientific discipline that big measures of H2O may still be present below the surface. Scientists believe that Mars experienced immense inundations about 3.5 billion old ages ago, though it is non cognize where the antediluvian inundation H2O came from, how long it lasted or where it went, recent missions to Red planets have uncovered exciting grounds. In 2002, NASA ‘s Mars Odyssey orbiter detected hydrogen-rich polar sedimentations, bespeaking big measures of H2O ice near to the surface. Further observations found H in other countries as good. If H2O ice permeated the full planet, Mars could hold significant subsurface beds of frozen H2O, and if true, the long-run colonisation of Mars is likely. In 2004, the Mars Exploration Rover named Opportunity found constructions and minerals bespeaking that liquid H2O was one time present at its set downing site. The wanderer ‘s twin, Spirit, besides found the signature of ancient H2O near its landing site halfway around Mars from Opportunity ‘s location. Recently, in August 2012, the investigation Curiosity ma de another surface landing in a crater and being the first nuclear-powered investigation. Leaving Mar ‘s orbit and the tellurian planets, ESP moves farther from the Sun to research the left-over remains from the formation of the solar system, the Asteroid belt. G. The Asteroids Belt. These little Solar System organic structures are largely composed of bouldery and metallic non-volatile minerals. Tens of 1000s of these â€Å" minor planets and little bouldery organic structures † are gathered in the chief asteroid belt, a huge annular ring between the orbits of Mars and Jupiter. Asteroids that base on balls near to Earth are called Near-Earth Objects ( NEOs ) . The chief asteroid belt occupies the orbit between Mars and Jupiter, and is between 2.3 and 3.3 AU from the Sun. It is thought to be leftovers from the Solar System ‘s formation that failed to blend because of the gravitative intervention of Jupiter. Asteroids scope in size from 100s of kilometres across to microscopic. Despite this, the entire mass of the chief belt is improbable to be more than a thousandth of that of the Earth. The chief belt is really sparsely populated ; spacecraft routinely pass through without incident. Asteroids with diameters between 10 and 10-4 m are called meteoroids. Asteroid groups in the chief belt are divided into groups and households based on their orbital features. Asteroid Moons are asteroids that orbit larger asteroids. They are non as clearly distinguished as planetal Moons, sometimes being about every bit big as their spouses. The asteroid belt besides contains main-belt comets which may hold been the beginning of Earth ‘s H2O. The interior Solar System is besides dusted with knave asteroids, many of which cross the orbits of the interior planets. The three wide composing categories of asteroids are C- , S- and M-types. The C-type asteroids ( carbonous ) are most common, and likely consist of clay and silicate stones and are dark in visual aspect. C-type asteroids are among the most ancient objects in our solar system. The S-types ( silicaceous ) are made up of silicate ( stony ) stuffs and nickel-iron. M-types ( metallic ) are made up of nickel-iron. The asteroids ‘ compositional differences are related to how far from the Sun they formed. Some experient high temperatures after they formed and partially melted, with Fe sinking to the centre and coercing basaltic ( volcanic ) lava to the surface. One such asteroid, Vesta, survives to this twenty-four hours. Ceres is 2.77 Gold from the Sun, is the largest organic structure in the asteroid belt, and considered a dwarf planet. It has a diameter of somewhat less than 1000 kilometer, big plenty for its ain gravitation to draw it into a spherical form. Ceres was considered a p lanet when it was discovered in the nineteenth century, but was reclassified as an asteroid in the 1850s as farther observation revealed extra asteroids. It was once more reclassified in 2006 as a dwarf planet along with Pluto. Leaving the left-over debris of the Asteroid belt ESP now begins ‘s really long journeys as did the Voyager, and Cassini investigations and see the four outer planets, or gas giants ( sometimes called Jovian planets ) , and jointly do up 99 per centum of the mass known to revolve the Sun. H. The Gas giants – Jupiter. Jupiter and Saturn ‘s ambiances are mostly hydrogen and He. Uranus and Neptune ‘s ambiances have a higher per centum of â€Å" ices † , such as H2O, ammonium hydroxide and methane. Some uranologists suggest they belong in their ain class, â€Å" ice giants. † All four gas giants have rings, although merely Saturn ‘s ring system is easy observed from Earth. Our investigation ESP approaches Jupiter at an mean distance of 5.203 AU from the Sun we are now in the part of deep infinite. Jupiter at 318 Earth multitudes has 2.5 times the mass of all the other planets put together, and an mean denseness of 1,314 kg/m3. It is composed mostly of H and He. Jupiter ‘s internal heat creates semi-permanent characteristics in its ambiance, such as cloud sets and the Great Red Spot. On 7 January 1610, utilizing a telescope ( likely the first ) he constructed, astronomer Galileo Galilei saw four little â€Å" stars as he foremost thought † near Jupiter. He had discovered Jupiter ‘s four largest Moons, now called Io, Europa, Ganymede, and Callisto. These four Moons are known today as the Galilean orbiters. In retrospect, Jupiter has 63 known orbiters, and demo similarities to the tellurian planets, such as volcanism and internal warming. Galileo ‘s surprise and light is understood. In 2004, while looking through a little Meade reflecting telescope, Jupiter ‘s four largest Moons were seeable as they were all in a consecutive line traveling around the planets equatorial plane. For the first clip of all time, I gazed at four Moons in the solar system other than our ain, and it was an astonishing sight. Looking at Jupiter from an Earth or near-orbit telescope or planetal investigation, the evident surface and visual aspect is a blend of dramat ic colourss and atmospheric characteristics. Most seeable clouds are composed of ammonium hydroxide, and H2O vapour exists deep below and can sometimes be seen through clear musca volitanss in the clouds. The planet ‘s â€Å" chevrons † are dark belts and light zones are created by strong east-west air currents in Jupiter ‘s upper ambiance. The Great Red Spot, a elephantine spinning storm, has been observed since the 1800s, and in recent old ages, three storms merged to organize the Little Red Spot, about half the size of the Great Red Spot. In December 1995, NASA ‘s Galileo ballistic capsule dropped a investigation into Jupiter ‘s ambiance, which made the first direct measurings of the planet ‘s ambiance, and began a multiyear survey of Jupiter and the largest Moons. The magnetic field of Jupiter and is about 20,000 times every bit powerful as Earth ‘s. Trapped within Jupiter ‘s magnetosphere ( the country in which magnetic field lines encircle the planet from pole to punt ) are droves of charged atoms. Jupiter ‘s rings and Moons are embedded in an intense radiation belt of negatrons and ions trapped by the magnetic field, and possibly a Moon landing is possible in the hereafter, but protection from this radiation will be necessary. Jupiter ‘s ambiance is similar to that of the Sun, and the composing is largely hydrogen and He. Deep in the ambiance, the force per unit area and temperature addition, compacting the H gas into a liquid. At farther deepnesss, the H becomes metallic and electrically carry oning. In this metallic bed, Jupiter ‘s powerful magnetic field is generated by electrical currents driven by Jupiter ‘s fast rotary motion ( 9.8 Earth hours. ) At the centre, the huge force per unit area may back up a solid nucleus of stone about the size of Earth. Jupiter ‘s Galilean Satellites. Io is the most volcanically active organic structure in the solar system and the surface is covered by S in different motley signifiers. As Io travels in its somewhat egg-shaped orbit, Jupiter ‘s huge gravitation causes â€Å" tides † in the solid surface that rise 100 m ( 300 pess ) high on Io, bring forthing adequate heat for volcanic activity and to drive off any H2O. Io ‘s vents are driven by hot silicate magma. Europa ‘s surface is largely H2O ice, and there is grounds that it may be covering an ocean of H2O or ice beneath. Europa is thought to hold twice every bit much H2O as does Earth, and machinations scientists because of its potency for holding a â€Å" habitable zone. † Life signifiers have been found booming near subterraneous vents on Earth and in other utmost locations that may be parallels to what may be on Europa. Given the right opportunity and some basic conditions, life is possible on so many different degrees. Ganymede is the largest Moon in the solar system ( larger than the planet Mercury ) , and is the lone Moon known to hold its ain internally generated magnetic field. Callisto ‘s surface is highly to a great extent cratered and ancient, a seeable record of events from the early history of the solar system. However, the really few little craters on Callisto indicate a little grade of current surface activity. The insides of Io, Europa and Ganymede have a superimposed construction similar to the Earth ) . Io, Europa and Ganymede all have nucleuss and mantle ‘s partly liquefied stone or a solid stone envelope around the nucleus. The surface of Europa and Ganymede is a midst, soft ice bed and a thin crust of impure H2O ice. In the instance of Europa, a subsurface H2O bed likely lies merely below the icy crust and may cover the full Moon. This makes Europa a campaigner for Moon landing, but in the film â€Å" 2001 A Space Odyssey † , world was forbidden to set down on Europa, nevertheless, we will of class neglect. Layering at Callisto is less good defined and appears to be chiefly a mixture of ice and stone. As ESP leaves the Jovian universe and one time more, as the voyager infinite investigations successfully navigated, rounds the elephantine planet to pick up extra velocity for the ocean trip to Saturn, and beyond. I. Saturn. At 9.5 AU from the Sun Saturn has a mass of 5.69 E26 kilogram. With an mean denseness of 690 kg/m3, Saturn is far less monolithic than any planet in the solar system, being merely 95 Earth multitudes and could be floated in H2O since its denseness is less than that of H2O. Famous for its extended ring system, Saturn has similarities to Jupiter, such as its atmospheric composing, as Saturn is largely a monolithic ball of H and He. Saturn is alone among the planets. All four gas giant planets have rings, made of balls of ice and stone, but none are as dramatic or every bit complicated as Saturn ‘s. Saturn ‘s magnetic field is non every bit immense as Jupiter ‘s, nevertheless ; it is still 578 times every bit powerful as the Earth ‘s. Saturn, its rings and many of its orbiters lie wholly within Saturn ‘s ain tremendous magnetosphere ( the part of infinite in which the behaviour of electrically charged atoms is influenced more by Saturn ‘s m agnetic field ) than by the solar air current. Jupiter portions the magnetic field similarity. Saturn has sixty known orbiters ; two of which, Titan and Enceladus, show marks of geological activity, though they are mostly made of ice. Titan is larger than Mercury and the lone orbiter in the Solar System with a significant ambiance. In 1610, Italian uranologist Galileo Galilei was the first to stare at Saturn through a telescope, and in 2004, after seeing Jupiter ‘s Galilean satellites ; I saw the lineation of Saturn ‘s rings. My image was non unlike Galileo ‘s where I could decide the rings, non their construction or colour, and noticed a dark infinite between the ring system and the planet was seeable. Although a absorbing sight, nil compared to seeing the Galilean orbiters. However, to recognition Galileo, my contemporary meade-reflector was equal to Galileo ‘s really first refractor ; a testament to the head of a mastermind. He would likely state, they do n't construct them like they used excessively. Winds in the upper ambiance reach 500 m ( 1,600 pess ) per second near the equatorial part. These super-fast air currents, combined with heat lifting from within the planet ‘s inside, do the yellow and gold sets seeable in the ambiance. In the early 1980s, NASA ‘s Voyager 1 and Voyager 2 ballistic capsule revealed that Saturn ‘s rings are made largely of H2O ice and the ring system extends 100s of 1000s of kilometres from the planet, nevertheless surprising, the perpendicular deepness is typically merely about 10 m ( 30 pess ) in the chief rings. Saturn ‘s Moon ‘s. The largest Moon, Titan, is a spot bigger than the planet Mercury ( Titan is the second-largest Moon in the solar system ; merely Jupiter ‘s Moon Ganymede is bigger. ) Titan is so big that it affects the orbits of other near-by Moons. At 5,150 kilometer ( 3,200 stat mis ) across, it is the 2nd largest Moon in the solar system. Titan hides its surface with a thick nitrogen-rich ambiance. Titan ‘s ambiance is similar to the Earth ‘s ambiance of long ago, before biological science took clasp on our place planet and changed the composing from C dioxide to O. Titan ‘s ambiance is about 95 % N, 3 % He with hints of methane. While the Earth ‘s atmosphere extends about 60 kilometers ( 37 stat mis ) into infinite, Titan ‘s extends about 600 kilometer ( 10 times that of the Earth ‘s ambiance ) into infinite. The Moon Iapetus has one side every bit bright as snow and one side every bit dark as black velvet, with a immense ridge running about most of its dark-side equator. Phoebe is uneven as the Moon orbits the planet in a way opposite that of Saturn ‘s larger Moons, as do several of the more late discovered Moons. The consequence of an impact that about split the Moon Mimas apart has an tremendous crater on one side supplying grounds that the solar system still contains left-over dust and can do significant impacts. The investigation Cassini observed warm breaks on Enceladus where vaporizing ice clearly flights and forms a immense cloud of H2O vapour over the South Pole. Scientists have seen grounds of active ice volcanism on Enceladus. Hyperion has an uneven planate form and rotates chaotically, likely due to a recent hit, and likely due to the infinite debris being tossed out from the ring-system due to hits at that place. The Moon Pan orbits within the chief rings and helps swee p stuffs out of a narrow infinite known as the Encke Gap ( have to make a better occupation of brushing with the many impacts ongoing. ) Finally, Tethys has a immense rift zone called the â€Å" Ithaca Chasma † that runs about three-fourthss of the manner around the Moon. Four extra Moons orbit in stable topographic points around Saturn they tag along with their larger sisters. These Moons lie 60 grades in front of or behind a larger Moon and in the same orbit. Telesto and Calypso move along with the larger Moon Tethys in its orbit ; Helene and Polydeuces occupy similar orbits with Dione. A hit with any of these smaller Moons within the same orbit can do ruinous effects with Saturn ‘s larger Moons. Uranus is following as our investigation moves on from Saturn. J. Uranus This unusual inverted universe is 19.6 Gold from the Sun, and at 14 Earth multitudes, has a mass of 8.68 E25 kilogram with a average denseness of 1,290 kg/m3. Uniquely among the planets is the lone gas-giant whose equator is about at right angles to its orbit ( its axial joust is over 90 grades to the ecliptic, ) and like Venus, rotates east to west. Scientists ‘ believe a hit with an Earth-sized object may explicate Uranus ‘ alone joust. Because of Uranus ‘ unusual orientation, the planet experiences utmost fluctuations in sunshine during each 20-year-long season. Uranus has more methane in it ‘s chiefly H and He atmosphere than Jupiter or Saturn. Methane gives Uranus its bluish shade. It has a much colder nucleus than the other gas giants, and radiates really small heat into infinite. Uranus has twenty-seven known orbiters, the largest 1s being Titania, Oberon, Umbriel, Ariel and Miranda. Scientists have now identified 13 known rings around Uranus. The interior system of nine rings, discovered in 1977, consists largely of narrow, dark rings. Voyager 2 found two extra inner rings. An outer system of two more-distant rings was discovered by the Hubble Space Telescope in 2003. Uranus is one of the two ice-giants of the outer solar system ( the other is Neptune ) . Sunlight base on ballss through the ambiance and is reflected back out by Uranus ‘ cloud tops. Methane gas absorbs the ruddy part of the visible radiation, ensuing in a bluish green colour. The majority ( 80 per centum or more ) of the mass of Uranus is contained in an drawn-out liquid nucleus dwelling largely of icy stuffs ( H2O, methane and ammonium hydroxide ) . Magnetic Fieldss are normally aligned with a planet ‘s rotary motion, nevertheless, Uranus ‘ magnetic field is tipped over ( the magnetic axis is tilted about 60 grades from the planet ‘s axis of rotary motion. ) The magnetic Fieldss of both Uranus and Neptune are really irregular. Uranus has 27 known Moons and unique in being named for Shakespearian characters, along with a twosome of the Moons being named for characters from the plants of Alexander Pope, whereas most of the orbiters revolving other planets take their names from Greek mythology. The Voyager 2 ballistic capsule visited the Uranian system in 1986 and tripled the figure of known Moons. Voyager 2 found an extra 10 Moons, merely 16-96 stat mis in diameter: Juliet, Puck, Cordelia, Ophelia, Bianca, Desdemona, Portia, Rosalind, Cressida and Belinda. Since so, uranologists utilizing the Hubble Space Telescope and improved ground-based telescopes have raised the sum to 27 known Moons. All of Uranus ‘s interior Moons ( those observed by Voyager 2 ) appear to be approximately half H2O ice and half stone. The composing of the Moons outside the orbit of Oberon remains unknown, but they are likely captured asteroids. The largest Moons of Uranus. Miranda is the innermost and smallest of the five major orbiters. It has elephantine canons every bit much as 12 times every bit deep as the Grand Canyon, with surfaces that appear really old, and others that look much younger. The brightest and perchance the youngest surface among all the Moons of Uranus is Ariel. It has few big craters and many little 1s, bespeaking that reasonably recent impact hits wiped out the big craters that would hold been left by much earlier, bigger hits. Intersecting vales pitted with craters scars its surface. Saturn ‘s Moon Umbriel is ancient, and the darkest of the five big Moons. It has many old, big craters and shows a cryptic bright pealing on one side. Oberon, the outermost of the five major Moons, is old, to a great extent cratered and shows small marks of internal activity. The shepherd Moons, Cordelia and Ophelia maintain Uranus ‘ thin, outermost â€Å" epsilon † pealing good defined. Between them and Miranda is a group of eight little orbiters unlike any other system of planetal Moons. Astronomers do n't yet understand how the small Moons have managed to avoid crashing into each other within this crowded part. Leaving Uranus to revolve on it ‘s side, the ESP plots a class to Neptune, and begins the venture to the outter parts of the solar system. K. Neptune. An huge distance of 30 AU from the Sun ( 4.5 billion kilometers, 2.8 billion stat mis, ) more than 30 times as far from the Sun as Earth and unseeable to the bare oculus, the planet takes about 165 Earth old ages to revolve our Sun. In 2011 Neptune completed its first orbit since its find in 1846, and portrays the huge size of the solar system. Though somewhat smaller than Uranus, is more monolithic ( tantamount to 17 Earths ) and hence denser, and radiates more internal heat, but non every bit much as Jupiter or Saturn. The mass of Neptune is 1.02 E26 kilogram and has a denseness of 1,640 kg/m3. Neptune is the last of the H and He gas giants ( although called an ice-giant ) in our solar system. Neptune has thirteen known orbiters. Neptune was the first planet located through mathematical anticipations instead than through regular observations of the sky because Uranus did n't go precisely as uranologists expected it to, therefore it was hypothesized the place and mass of another unknown planet may be the cause of the ascertained alterations to Uranus ‘ orbit. The magnetic field of Neptune is approximately 27 times more powerful than that of Earth. Like Uranus, whose magnetic axis is tilted about 60 grades from the axis of rotary motion ; Neptune ‘s magnetosphere undergoes wild fluctuations during each rotary motion because of a similar 47 grades misalignment with the planet ‘s rotational axis. Neptune ‘s atmosphere extends to great deepnesss, bit by bit unifying into H2O and other liquid ices over a heavier, about Earth-size solid nucleus. Neptune ‘s bluish colour is the consequence of methane in the ambiance, but Neptune ‘s more vivid, brighter blue is the consequence of an unknown constituent that causes the more intense colour. Despite its great distance and low energy input from the Sun, Neptune ‘s air currents are estimated at three times stronger than Jupiter ‘s and nine times stronger than Earth ‘s. In 1989, Voyager 2 tracked a big, egg-shaped, dark storm ( Great Dark Spot ) in Neptune ‘s southern hemisphere, which was big plenty to incorporate the full Earth, spun counterclockwise and moved due west at about 750 stat mis per hr. Voyager 2 ‘s observations confirmed that Neptune has six known rings that are considered to be unusual, have four thick parts ( bunchs of dust ) called discharge, and thought to be comparative ly immature and ephemeral. Voyager 2 ‘s observations besides discovered 6 Moons at Neptune, 13 that are known today. Voyager 2 besides discovered geysers spiting icy stuff upward more than 8 kilometer ( 5 stat mis ) on Neptune ‘s Moon Triton. Neptune ‘s Moons. The largest Moon, Triton, is geologically active, with geysers of liquid N. Triton ( non to be confused with Saturn ‘s Moon, Titan ) , orbits the planet in the opposite way compared with the remainder of the Moons, proposing that it may hold been captured by Neptune in the distant yesteryear. Triton is highly cold with temperatures on its surface about -391degrees Fahrenheit ( -235 grades Celsius ) . Triton ‘s thin ambiance, besides discovered by Voyager, has been detected from Earth several times since, and is turning warmer, although scientists do non yet cognize why. Voyager 2 revealed fascinating inside informations about Triton, such as ice vents that spout, what is likely a mixture of liquid N, methane and dust, and which immediately freezes and so snows back down to the surface. One image from Voyager 2 shows a plume hiting 5 stat mis into the sky and floating 87 stat mis downwind. Neptune ‘s gravitation acts as a retarding force on the counter-orbiting Triton, decelerating it down and doing it drop closer and closer to the planet. Millions of old ages from now, Triton will come near adequate for gravitative forces to interrupt it apart, perchance organizing a ring around Neptune brilliantly plenty to be seen with a telescope from the Earth. Proteus and five other Moons had to wait for Voyager 2 to do them known. All six are among the darker objects found in the solar system. Astronomers utilizing improved ground-based telescopes found more orbiters in 2002 and 2003, conveying the known sum to 13. L. Trans-Neptunian Region. The country beyond Neptune, frequently called the outer Solar System or the â€Å" trans-Neptunian part † is still undiscovered. It appears to dwell chiefly of little universes ( the largest holding a diameter merely a fifth that of the Earth and a mass far smaller than that of the Moon ) composed chiefly of stone and ice. Our investigation, The Earth Science Probe ( ESP ) has travelled one million millions of stat mis and explored the eight known planets, and now embarks to the border of the solar system to research the Kuiper belt and the Oort Cloud, and beyond the influence of the Sun to the heliosphere. Comets, friend or adversary. Comets are leftovers from the formation of the solar system around 4.6 billion old ages ago, and consist largely of ice coated bouldery stuff, referred to as dirty sweet sand verbenas, and output of import hints about the formation of our solar system. Comets may hold brought H2O and organic compounds, the edifice blocks of life, to the early Earth and other parts of the solar system. Most comets travel a safe distance from the Sun, comet Halley comes no closer than 89 million kilometer ( 55 million stat mis ) . However, some comets, called sun-grazers, clang straight into the Sun or acquire so near that they break up and vaporize. A disc-like belt of icy organic structures exists merely beyond Neptune, as theorized by astronomer Gerard Kuiper ( the so called Kuiper Belt ) , where a population of dark comets orbits the Sun in the kingdom of Pluto. These icy objects, on occasion pushed by gravitation into orbits conveying them closer to the Sun, go the alleged short-period comets. They take less than 200 old ages to revolve the Sun, and their visual aspect is predictable because they have passed by earlier. Comets are little Solar System organic structures, normally merely a few kilometres across, composed mostly of volatile ices. They have extremely bizarre orbits, by and large a perihelion within the orbits of the interior planets and an aphelion far beyond Pluto. When a comet enters the inner Solar System, its propinquity to the Sun causes its icy surface to sublimate and ionise, making a coma: a long tail of gas and dust frequently seeable to the bare oculus. Short-period comets have orbits enduring less tha n two hundred old ages. Long-period comets have orbits enduring 1000s of old ages. Short-period comets are believed to arise in the Kuiper belt, while long-period comets, such as Hale-Bopp, are believed to arise in the Oort cloud, nevertheless, these long-period comets are less predictable as many arrive from a part called the Oort Cloud about 100,000 Golds from the Sun. These Oort Cloud comets can take every bit long as 30 million old ages to finish one trip around the Sun. NASA ‘s Stardust mission successfully flew within 236 kilometers ( 147 stat mis ) of the karyon of Comet Wild 2 in January 2004, roll uping atoms and interstellar dust for a sample return to Earth in 2006. Analysis of the Stardust samples suggests that comets may be more complex than originally thought. Minerals that formed near the Sun or other stars were found in the samples, and suggest that stuffs from the interior parts of the solar system traveled to the outer parts where comets formed. Another NASA mission, called Deep Impact, consisted of a flyby ballistic capsule and an impactor. In July 2005, the impactor was released into the way of comet â€Å" Tempel 1 † in a planned hit, which vaporized the impactor and ejected monolithic sums of mulct, powdered stuff from beneath the comet ‘s surface. M. The Kuiper Belt. The Kuiper belt, the part ‘s first formation, is a great ring of dust similar to the asteroid belt, but composed chiefly of ice. It extends between 30 and 50 AU from the Sun. This part is thought to be the beginning of short-period comets. It is composed chiefly of little Solar System organic structures ( Kuiper Belt Object, or KBO for short, ) but many of the largest KBOs, such as Quaoar, Varuna, and Orcus, may be reclassified as dwarf planets. There are estimated to be over 100,000 Kuiper belt objects with a diameter greater than 50 kilometer, but the entire mass of the Kuiper belt is thought to be merely a ten percent or even a centesimal the mass of the Earth. Many Kuiper belt objects have multiple orbiters, and most have orbits that take them outside the plane of the ecliptic. The Demoted Pluto is now considered a dwarf planet and is the largest known object in the Kuiper belt at an mean distance of 39 AU. When discovered in 1930 it was considered to be the 9th planet ; this changed in 2006 with the acceptance of a formal definition of planet. Pluto has a comparatively bizarre orbit inclined 17 grades to the ecliptic plane ( the Earth ‘s Moon is 5 grades ) and runing from 29.7 AU from the Sun at perihelion ( within the orbit of Neptune ) to 49.5 AU at aphelion. It is ill-defined whether Charon, Pluto ‘s largest Moon, will go on to be classified as such or as a midget planet itself. In July 2005, a squad of scientists announced the find of a KBO that was ab initio thought to be about 10 per centum larger than Pluto. The object subsequently named Eris, orbits the Sun about one time every 560 old ages, its distance varying from approximately 38 to 98 AU. ( For comparing, Pluto travels from 29 to 49 AU in its solar orbit. ) Eris has a little Moon named Dysnomia. More recent measurings show it to be somewhat smaller than Pluto. The find of Eris revolving the Sun and similar in size to Pluto ( which was so designated the 9th planet ) , forced uranologists to see whether Eris should be classified as the 10th planet. Alternatively, in 2006, the International Astronomical Union created a new category of objects called dwarf planets, and placed Pluto, Eris and the star-shaped Ceres in this class. While no ballistic capsule has yet traveled to the Kuiper Belt, NASA ‘s New Horizons ballistic capsule is scheduled to get at Pluto in 2015. The New Horizons mission squad hopes to analyze one or more Kuiper belt objects after its Pluto mission is complete. N. Farthest parts. The point at which the Solar System ends and interstellar infinite begins is non exactly defined, since its outer boundaries are shaped by two separate forces, the solar air current and the Sun ‘s gravitation. The solar air current is believed to give to the interstellar medium at approximately four times Pluto ‘s distance. The Scattered Disc. The scattered phonograph record overlaps the Kuiper belt but extends much farther outwards. Scattered disc objects are believed to come from the Kuiper belt, holding been ejected by the gravitative influence of Neptune ‘s early outward migration. Most scattered phonograph record objects ( SDOs ) move from within the Kuiper belt and every bit far as 150 AU from the Sun. SDOs ‘ orbits are besides extremely inclined to the ecliptic plane, and are frequently about perpendicular to it. Eris ( 68 AU norm ) is the largest known scattered phonograph record object, and caused a argument about what constitutes a planet, since it is at least 5 % larger than Pluto with an estimated diameter of 2400 kilometer ( 1500 myocardial infarction ) . It is the largest of the known midget planets. It has one Moon, Dysnomia. Like Pluto, its orbit is extremely bizarre, with a perihelion of 38.2 AU ( approximately Pluto ‘s distance from the Sun ) and an aphelion of 97.6 A U, and steeply inclined to the ecliptic plane. The Heliopause. The heliosphere is divided into two separate parts. The solar air current travels at its maximal speed out to about 95 AU, or three times the orbit of Pluto. The border of this part is the expiration daze, the point at which the solar air current collides with the opposing air currents of the interstellar medium. Here the air current slows, condenses and becomes more disruptive, organizing a great egg-shaped construction known as the heliosheath that looks and behaves really much like a comet ‘s tail, widening outward for a farther 40. The outer boundary of the heliosphere, the heliopause, is the point at which the solar air current eventually terminates, and is the beginning of interstellar infinite. No ballistic capsule, non even the Voyager investigations have yet passed beyond the heliopause, so it is impossible to cognize for certain the conditions in local interstellar infinite. O. Oort cloud. The conjectural Oort cloud is a great mass of up to a trillion icy objects that is believed to be the beginning for all long-period comets and to environ the Solar System at around 50,000 AU, and perchance to every bit far as 100,000 AU. It is believed to be composed of comets which were ejected from the inner Solar System by gravitative interactions with the outer planets. Oort cloud objects move really easy, and can be perturbed by infrequent events such as hits. Sedna and the interior Oort cloud. In March 2004, a squad of uranologists announced the find of a planet-like object revolving the Sun at an utmost distance. The object, since named Sedna for an Inuit goddess who lives at the underside of the cold Arctic ocean, approaches the Sun merely briefly during its 10,500-year solar orbit. Sedna travels in a long, egg-shaped orbit between 76 and about 1,000 AU from the Sun. Since Sedna ‘s orbit takes it to such an utmost distance, its inventors have suggested that it is the first observed organic structure belonging to the interior Oort Cloud. Sedna is a big, ruddy Pluto-like object, and discovered by Mike Brown in 2003, asserts that it can non be portion of the scattered phonograph record or the Kuiper Belt, he and other uranologists consider it to be the first in an wholly new population. Brown footings this population the â€Å" Inner Oort cloud, † as it may hold formed through a similar procedure, although it is far closer to the Sun. Sedna is really likely a dwarf planet, though its form has yet to be determined with certainty. P. Solar System Boundaries. Much of our Solar System is still unknown. The Sun ‘s gravitative field is estimated to rule the gravitative forces of environing stars out to about two light old ages ( 125,000 AU ) . The outer extent of the Oort cloud may non widen farther than 50,000 AU. Despite finds such as Sedna, the part between the Kuiper belt and the Oort cloud, an country 10s of 1000s of AU in radius, is still virtually chartless. There are besides ongoing surveies of the part between Mercury and the Sun. Objects may yet be discovered in the Solar System ‘s chartless parts. 3. Our Galactic Context. Our Solar System is located in the Milky Way galaxy, a coiling galaxy with a diameter of about 100,000 light old ages incorporating about 200 billion stars. Our Sun resides in one of the Milky Way ‘s outer spiral weaponries, known as the Orion Arm. The Sun lies between 25,000 and 28,000 light old ages from the Galactic Center finishing one revolution about the galactic centre every 225-250 million old ages, and is known as the Solar System ‘s galactic twelvemonth. A. The Solar System ‘s location. The development of life on Earth in the galaxy is likely a factor in as we inhabit a comparatively quite country less dense than one would anticipate nearer to the galactic centre where events are more violent. The Solar System ‘s orbit is near to being round and approximately the same velocity as that of the coiling weaponries, which means it passes through them merely seldom, so mobile infinite dust ( asteroids ) does non typically venture into the influence of the suns gravitative pull. B. Objects revolving the Sun. All objects are divided into three categories ; planets ( their 166 known Moons ) , three midget planets ( Ceres, Pluto, and Eris and their four known Moons ) , and one million millions of little Solar System organic structures. A planet is any organic structure in orbit around the Sun that has adequate mass to organize itself into a spherical form. There are eight known planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. On August 24 2006 the International Astronomical Union defined the term â€Å" planet † for the first clip, excepting Pluto and reclassifying it under the new class of dwarf planet along with Eris and Ceres. C. The Solar System Formation. Is believed to hold formed harmonizing to the nebulous hypothesis, which says that 4.6 billion old ages ago the Solar System formed from the gravitative prostration of a elephantine molecular cloud several light years across. As gravitation, acted on the catching cloud, it began to flatten into a spinning disc with a diameter of approximately 200 AU and a hot, heavy protostar at the centre began to organize. After 100 million old ages, the force per unit area and denseness of H in the Centre of the fall ining nebula became great plenty for the young-sun to get down thermonuclear merger finally going a fully fledged star. D. The staying cloud of gas and dust. They are believed to hold formed by accumulation, the planets began as dust grains in orbit around the cardinal protostar ; so gathered by direct contact into bunchs ; so collided to organize larger organic structures ( planetesimals ) ; so bit by bit increased by farther hits over the class of the following few million old ages. The planetesimals which formed the interior Solar System were comparatively little and composed mostly of compounds with high runing points, such as silicates and metals. These bouldery organic structures finally became the tellurian planets. Farther out beyond the star-shaped belt, and beyond the frost line, where icy compounds could stay solid, Jupiter and Saturn became the gas giants. Uranus and Neptune captured much less material and are known as ice giants because their nucleuss are believed to be made largely of ices ( hydrogen compounds ) . C. Planet Summary. Terrestrial planets all have about the same type of construction: a cardinal metallic nucleus, largely iron, with a environing silicate mantle. The Moon is similar, but has a much smaller Fe nucleus. Tellurian planets have canons, craters, mountains, and vents. Tellurian planets possess secondary atmospheresA – ambiances generated through internal volcanism or comet impacts, as opposed to the gas giants, which possess primary atmospheresA – ambiances captured straight from the original solar nebula. A gas giant ( sometimes besides known as a Jovian planet after the planet Jupiter, or elephantine planet ) is a big planet that is non chiefly composed of stone or other solid affair. There are four gas giants in the Solar System: Jupiter, Saturn, Uranus, and Neptune. The tellurian planets chiefly composed of dense silicates formed closer to the Sun and retained their solid construction because of the close propinquity to the Sun. In contrast, the gas giants ab initio formed from nebular-gases far from the Sun became planets and retained gas-like constructions cold plenty to distill to liquids and ice.