Argumentative paper Essay Example | Topics and Well Written Essays - 1000 words

Argumentative paper - Essay Example Notably, the year-round school plan ensures that students do not have the three-month summer break, but are in school throughout the year. Although the year-round school seems to be highly favorable, it has certain disadvantages that need proper consideration as will be highlighted in this paper. The year-round calendar adopted by some school districts presents certain challenges, especially when it comes to the storage space needed for both students and teachers. Notably, many multitrack year-round calendars do not follow the usual single class operating in a specified classroom. The system allows many students to enroll in different programs throughout the school year. Therefore, school districts adopting the plan have budget wisely in an effort to ensure that there is sufficient storage space for both students and teachers. Unless this happens, the multitrack year-round calendars will strain school facilities contrary to its objective of ensuring proper utilization of the facilities throughout the year (Chittom and Klassen 1). The year-round calendars adopted in some districts introduce additional demands on the school subordinate staff cafeteria systems as well as the maintenance services. Usually, all these services are continuously needed throughout the year. Compared to other plans that allow students to have a three-month summer break, support staffs working in different schools face the compulsion of constantly providing services to the schools. Therefore, many support staffs do not find the systems favorable because the year-round calendar strains them (Long). The year-round calendars pose challenges for teachers who pursue further education during the summer break. Notably, teachers need to advance their education in an effort to become more qualified for their job responsibilities. Usually, the three-month summer break gives teachers sufficient time to study each year. With the

Business Ethics, Ethic Dilemma, Manual of conduct Essay

Business Ethics, Ethic Dilemma, Manual of conduct - Essay Example The conflict mainly occurs when dubious decisions are made within an organization and these decisions can lead to major disputes that might even demand legal resolution. Therefore, the ethical requirements that organizations must abide by should be properly and clearly defined to give business owners the opportunity to properly follow them and avoid any legal repercussions that may otherwise result. Put simply, the ethical decision making process is therefore a set of well-established procedures within any given organization that helps in evaluating the best course of action among several options, while working within the ethical requirements of the industry in question.   For our research into ethics we have chosen Chiquita Brands. Chiquita Brands has, in the past, embarked upon ethically questionable actions that we have chosen for our case study dilemmas. These dilemmas include the child labor that Chiquita employs on their banana plantations in Ecuador and the funding of a right-wing paramilitary group in Colombia. Both of these predicaments are equally appalling acts that contain a number of loopholes that release Chiquita from guilt. Chiquita is a leading global produce company involved in the banana trade. Our company is headquartered in Charlotte, North Carolina, but Chiquita Banana and our subsidiaries employ over 20,000 people located in over six continents. Although our company is now dedicated to our core values of Integrity, Respect, Opportunity and Responsibility, over the many years we have been in operation, like any other organization, we have been forced to deal with multiple ethical dilemmas in a business environment. These have even resulted in the organization having trouble with the law. Among such issues were the use of child laborers in our methods of production and the possible payment of multiples sums of money to criminal organizations in South American countries for protection. The last issue,

Graduate Employment Opportunities in China

Graduate Employment Opportunities in China The purpose of this paper is to the moving from education into the China employment market. The objectives to write this essay is desire know the graduate market in China accurately and try to understand the actual situation. In this paper, we shall first briefly introduction to the marketplace for graduate employment opportunities in China. What do employers look for is the essay going to describe secondly. Thirdly, a general comment on the intended career path and target position after graduation. In addition, the writer will through the conclusion to state briefly what skills are vital to cope with target position after graduation. (Done, J. Mulver, R, 2011) stated the term labour market is used to describe the interactions between employers who need workers and employers. labour market is both complex and dynamic, that there have two fundamental forces driving the labour market, which are demand and supply. So the relationship between supply and demand is critical. In the graduate labour market, the people who are seeking a job is the supply, and the employer offering the job is the demand. The supply have to make they known in the marketplace, and the demand have to let people know they have a job and they want to fill. This essay will focus in the manufacturing industry which is essential industry in China. The Marketplace For Graduate Employment Opportunities At Home Country Under the comprehensive influence of economy, politics and society, the employment of graduate is confronted with a fierce situation in China. In the meanwhile, it also presents both unprecedented opportunities and challenges for current graduate employment. In the past thirty years, Chinas economy has grown at an average of approximately 10% a year, and become the worlds second largest economy now. Chinas markets have opened to the whole world and the trade has increased remarkably. And China is the largest global producer of washing machines, cameras and computers (among hundreds of other products), its manufacturing capability is very eminence. In order to face foreign and domestic huge market, many companies are constantly expanding staff recruitment. Chinas human market network stated that the percentage of the bachelor of business administration employed in manufacturing sector was 58.8% in 2010. The business administration possess wide range of knowledge, including planning, organization, direction, control and organize the relevant business operations and behavioral decision. As a result, the ratio was higher than other major in manufacturing. In addition, (Done, J. and Mulvey, R. 2011) stated the graduates have more workforce and seem to be bring innovation and creativity to the company. This is the reason why many companies like to hire the student who just finished university. The marketplace for graduate employment opportunities in China is massive. Considering that is labor demand in Chinas manufacturing industry is large. The Ministry of Social Security and Human Resources described employment as stable and normal with a record about 6.94 million jobs created in the 2012 first half. On the other hand, The challenge for graduates is still exist. The speed of society development is slower than the speed of the increase of graduated students; as a result, some graduates cannot find positions in the job market . At the same time, expectations of college students in getting good jobs in big cities causes the drastic competition in the metropolis job markets. On the contrary, in the vast countryside and small or medium cities, there are still many vacant positions that students dont want to accept. Example like GuangZhou, it is a big city in Guangdong province in China. But the graduate employment opportunities is seldom in this city, because the manufacturin g industry is not important in GuangZhou and a large number of the graduate are looking for a job here, this is a competitive job market. But the cities beside the GuangZhou, like DongGuan, HuiZhou, three of them are Medium-sized city. There are so many employment opportunities over there. The first reason is the medium-sized city always pay attention to manufacturing industry, the secondly is most graduates dont want to accept work in the medium-sized or small city, there are still many vacant positions. A lot of the graduates tend to overestimate themselves and their expectations to the future jobs are too high. Almost all of them have a high requirement of their salaries and working conditions, they would rather stay in big cities waiting for job opportunities than go back to their hometowns and find other jobs. This is the important reason why marketplace for graduate employment opportunities in China is massive, but many of graduates cannot find suitable job in big city. In this section, combined with the date form government department, journal, and the industry news, the graduate student employment opportunity of manufacturing industry in China is very well in small or medium city. Small and medium city hope the graduates work there. There are many graduate jobs available in manufacturing industry and the labor demand in China is large. In the big city, the students can not be optimistic about employment prospects, the labour market competition is intense and almost full. Since everyones power is limited, we cannot change the social environment within a short period. However, we can adapt ourselves to this society. Above all, we should change our obsolete employment concepts and adjust the psychology in employment in order to set up a proper conception of job-selecting views. Try to adjust the employment exception according to own ability. Do not think too much expectation on the salary and working conditions when we seek for jobs we have never don e before. Hold a right attitude towards jobs and set job expectation at a suitable level is the key to the solution and remission of the difficulty in employment. Besides, the graduates should strengthen the sense of competition, never complain about the society. To sum up, we have to learn how to assuage and solve the employment problem by ourselves, what we should do is to take it rationally and combine our own situations with facts. What skills and competencies are graduate employers looking for? All graduates need good employability skill. When the graduate is taking job interview, the employers will pay much attention about the employability skills. So, which skill is most important in employability skills? Following that, the table shows the 24 skills which were most deemed important based on survey by employers. Where 1 is the least important and 5 is the most important. Table 1: Table showing importance (least important to most important) of graduate skills (J.M. Norusis,2004) Form this table, the most important seem to be teamwork, the following is motivation, learning attitude, independent work, communication skill, inter personal skill, flexibility etc. After that, the academic learning is the least important in 24 skills. In the labour market, a lot of competitors have the same degree as you or higher than your degree. Therefore, the graduates have good employability skill is a major key to get the job. As a student, In addition to get the graduate certificate, still have to import the employability skill. This will be measured and tested throughout the recruitment and selection process. What Do Employers Look For? In the manufacturing industry, the employers are looking for graduates who are enthusiasm, positive mental attitude, efficient, detail oriented, honesty, listening and Prioritize. Also, graduates who have good teamwork, motivation,learning attitude, independent work, communication skill, inter personal skill. The prioritize and skill of communication are most important in manufacturing industry, by reason of there are one important step in factory when it is manufacturing products. The step is assign work mission. Excellent assign work mission can help the factory improve work efficiency to make best profit. As the result, the prioritize main is good at assign work mission, and the communication skill can help others understand what you talking about and listening to your order. Nowadays, all the companies are using the computer to do the work, so, the internet technology is become more and more important. The graduates should have basic knowledge about the computer. Next, most employers also look for at least a 2:1 in a degree, international experience and foreign language skill. Chinas markets have opened to the whole world, employer intend to staff has international experience and one or two foreign language skill to help the company into foreign markets. Intended Career Path My intense interest now is international business management ,a subject that combines global issue, international trade, business management and social value. It provides me with a good opportunity to express my idea, display my management ability. And at the same time I obtain from it the pleasure of study and immense satisfaction. I hope I will become a prominent businessman in this field someday. My intended career path has three stages short, medium and long term. They are showing for less than 3 years, 4 to 7 years and over 8 years respectively. The following is my years of occupation planning: Short term, less than 3 years: A student do not has any experience about the job when the student just finished university. Therefore, the first year should be during the internship in manufacturing industry based on knowledge, learn to find and solve problems, to consolidate the management knowledge, improve the operation level. For the future work to lay a good foundation. To start the plan, I will looking for the small or medium company. The reason is first these companies scale are not big, every department is close the ranks. I can learn the knowledge and experience form different department. Secondly, I can easy to get the opportunity for advancement. In the big company, the competition is very intense, learning and advancement are difficulty. But, when I already have jobs, I have to understand salary expectations before graduation are generally lower than the real payment. I hope after two years, I can understand the manufacturing industry market, supply chain, and get much experience of management. This is the objective of short term plan. Medium term, 4 to 7 years: In the medium term plan, to find a suitable development of the company, set the mentality is my objective. In this 4 to 7 years, I have to hard work, strive for the leader s position. When you become a leader, you can use own opinion, ways to do something. And you have chance to show the brilliance. Last, you can promote your leadership, communication skill, problem solving, and teamwork. On the other hand, I have to establish a good communication with the guests for make a networking for future development. A strong networking is very helpful for my future life. The result from my Numerical Reasoning Skills Feedback Report, the score was at the 81st percentile. This means my scored better than 81 per cent of the comparison group. As the result, the report state I have high ability of basic arithmetic, quickly extracting valuable information from a lot of complicated information, and economic common sense. That is very useful to strive for the leaders position. Long term, over 8 years: Try to be the manger in big company. I am pursuing a management position with sales manager in Cheung Kong (Holdings) Limited in HongKong . The requirements for my target position are a minimum of degree in Business Administration, Sales and management experience, good understanding of PRC property market, excellent leadership and presentation skills with result-oriented approach, good command of written and spoken English, Cantonese and Mandarin. Sales management is to realize all kinds of organizational objectives, create, establish and maintain the good between target market exchange and contact and design analysis, planning, implementation and control. Through the planning, implementation and control enterprise sales activities to achieve the enterprises sales target. This job is looking for who have sales experience, problem-solving, communication skills, leadership, presentation skills and knowledge of market management. The reason to select that job because the first I want to work in big city in Asia, HongKong is one of the fastest growing economy city in Asia. The second is my knowledge of business management is suitable for this job. The other reason is I was working in Kaisa Group ( See Appendix ) before, I learn the management, marketing, and people-oriented skill in my work experience. I believe these experience is suitable for sale management. In my long term plan, after 8 years, I believe I will have much experience of sales management and market management, many skills have improved and I have degree in business administration, also I can written and spoken English, the Cantonese and Mandarin are my mother language. So, I think I could be get this job. I determined to achieve my goal. The result of the Prospects Planner What job would suit me? shows the list of matched occupations: 1. Environmental consultant (89%) 2. Equality and diversity officer (88%) 3. Investment analyst (87%) 4. Charity fundraiser (87%) 5. Management consultant (87%). Five of these occupations are different types and following my skills, motivations, desires. From this result, I think the Environmental consultant, Equality and diversity officer, Investment analyst and Management consultant are right for me according my hobby or skills. First, the environmental consultant and investment analyst,can give me much personal autonomy and high profit, but it is not following my knowledge of my degree course. After that, the equality and diversity officer, management consultant are according my degree choice.The important condition of these two occupations is problem solving. I believe I am good at these occupations cause I was study in two different countries to learned many skills. One is Singapore and the other is China. In this two different countries, I had join many school group work, and I was working in a big company about three months in China. (see Appendix 18) I have a lot of opportunity to learn how to solving problem. Also my intense interest now is business management. The result form my Abstract Reasoning Skills Feedback Report, my score was at the 65th percentile. The report is testing the ability of the new idea and problem-solving. And my point is better than 65 per cent of the comparison group. The full mark is 100 per cent of the comparison group. From this result, that can be prove my ability of the new idea and problem-solving in medium level. I should be improve my skill in future, make it in the high level. Conclusion In conclusion, the employment opportunities sound positive in China. The labour market in big city intense and almost full, but the small and medium city still many vacant positions. The graduates have to change their employment concepts. They can not tend to overestimate themselves and their expectations to the future jobs are too high. Graduates should understand their salary is not high when they just finished university to start a job. But the first or second year in your job is a good opportunity to improve the skills and get experience. As we know, the Teamwork, motivation, and learning attitude were most deemed important based on survey by employers. The graduates have to remember improve their skills everyday. Good skills is a good key to get the job in a fiercely competitive occupation labour market. About the career path, the right career choice or not, is directly related to their career success or failure. To begin choice our career, at least should consider the following points: personality and career matching, interest in the match and vocational, career matching expertise, internal and external environment and adapt to occupational. Set career goals, is the core of career planning. The cause of the success or failure of a person, to a large extent depend on the availability of appropriate target correctly. No goal, as the boat into the sea, vast surrounding, there is no direction, I do not know their own going. Goal setting, following a career in the choice of route choice career after aim in life to make choices. Next step From the result, I understand I have to improve my teamwork skill now. Before that, I like to work alone, but I know the teamwork is more important than work alone now. From the table, we know the most important is teamwork. The employer always looking for who have good teamwork skill. If I do not improve this skill, I will be lost many opportunity. To improve my teamwork skill. I should join more group activity, communicate with others and try to give more opinions to the team. On the other hand, I will continue to find the internship in my summer holiday. I have send letter to Kaisa Group Real Large Estate Company, I hope I can work in this company in summer holiday again. Because the internship is looking for student to do a sales management, that is very precious experience for me, cause that my target position is sales management.In the future, I hope I will become a prominent businessman in this field someday.

American Dream Lost in F. Scott Fitzgerald’s The Great Gatsby :: The Great Gatsby

American Dream Lost - Gatsby as a Social Commentary on American Life The Great Gatsby, by F. Scott Fitzgerald, has been celebrated as one of the greatest, if not the greatest American novel.   Yet this is ironic for the society which has so hailed the book is precisely that which is criticized throughout it.   Politically, the American dream was a foundation of ideals and hopes for any and every American individual.   Specifically, one of the ideals was an American dream free of class distinction; that every person has the opportunity to be whomever they hope to be.   In a sort of Cinderella-like fashion, it is in essence an ideal of social mobility and freedom.   The social reality, however, is far more cruel.   Because of the harsh truth of social America, by way of its pretentiousness and decadence, the American dream is lost.   Through Nick’s honest and poignant observation, the parallel lives of Myrtle Wilson and Jay Gatsby reflect The Great Gatsby as a social commentary about the polluted American Dream.   Myrtle is that infamous model of how the political and social ideals of America conflict so that the American dream becomes a nightmare.   Contrary to the naivete the American dream, there are indeed fine class distinctions.   With them comes certain social boundaries.   In a sense, it is almost as if there are unspoken sumptuary laws understood by low and high classed individuals alike.   Myrtle Wilson is no exception. Instead of abiding by them, Myrtle, who represents the low and ignorant class of America, tried to break the social barriers and thus pursues wealth by any means necessary.   Using her sexuality and vulgar mien, she becomes false for abandoning and dismissing her own social foundation, and like Nick, we as readers are repulsed by her grotesque approach to entering the rich class.   At one point, and quite humorously to the knowing onlooker, Myrtle complains about a service done for her that was so expensive that "when she gave [Myrtle] the bill you’d of thought she had [her] appendicitus out" (35).   Obviously misusing her wording, it is comical only because she is trying so hard to fit into the snobbish upper class persona, and failing miserably.   Her rudeness becomes more apparent when she "rejected the compliment [about her dress] by raising her eyebrow in disdain" (35).   She is so false in her manner that Nick observes that she "had changed her costume†¦and was now attired in an elaborate afternoon dress" (35).

Full Set of Aqa A2 Tectonics Notes

FULL SET OF NOTES ON TECHTONICS 2012 AQA GEOGRAPHY FULL SET OF NOTES ON TECHTONICS 2012 AQA GEOGRAPHY TECHTONICS| TOPICS| UNDERSTOOD/COVERED? | PLATE MOVEMENT| | SEISMICITY| | VULCANICITY | | These notes were copied from an AQA textbook. They contain EVERYTHING you need to know for the exam for the tectonics section. You WILL however, need to use your own case studies as these are not included. You will need 2 case studies for volcanoes, and 2 case studies for earthquakes. You ideally need to have one LEDC and one MEDC for each.You could use Iceland and Pinatubo for the volcanoes; and Haiti and Japan for the earthquakes These notes were copied from an AQA textbook. They contain EVERYTHING you need to know for the exam for the tectonics section. You WILL however, need to use your own case studies as these are not included. You will need 2 case studies for volcanoes, and 2 case studies for earthquakes. You ideally need to have one LEDC and one MEDC for each. You could use Iceland and P inatubo for the volcanoes; and Haiti and Japan for the earthquakes CORE- size of mars, densest part, made of rocks of iron and nickel. Rigid pper mantle, apart from this most of the mantle is semi molten with temperatures near the core reaching 5000 degrees. These high temperatures generate convection currents. Thinnest layer is the crust which has the coolest less dense rocks. These rocks are rich In silicon o2 aluminium potassium and sodium. TWO TYPES OF CRUST: Oceanic and continental. Composed of mainly sedimentary, metamorphic and igneous rocks. Continental crust can be 70km thick. CORE- size of mars, densest part, made of rocks of iron and nickel. Rigid upper mantle, apart from this most of the mantle is semi molten with temperatures near the core reaching 5000 degrees.These high temperatures generate convection currents. Thinnest layer is the crust which has the coolest less dense rocks. These rocks are rich In silicon o2 aluminium potassium and sodium. TWO TYPES OF CRUST: Oce anic and continental. Composed of mainly sedimentary, metamorphic and igneous rocks. Continental crust can be 70km thick. PLATE TECHTONIC THEORY: People had noticed that certain continents looked like they had once fitted together. Evidence built up over time and Alfred Wegner was allowed to publish his theory. He suggested that they were once all joined and called Pangaea.Wegner proposed that at some time land had drifted apart. Evidence included: 1)Continental fit: seemed to fit together if placed besides each other. 2) Geological Evidence: rocks of the age and type are found in SE Brazil and South Africa. The trends of mountains in East USA and NW Europe are similar when they are placed in old positions. Similar glacial deposits are found in Antarctica, S America 3) Climatological Evidence: Places as far apart as Antarctica, North America and the UK all contain coal deposits of similar age that were formed in tropical conditions. They are no longer in tropical climate zones and m ust have drifted apart. )Biological Evidence: Similar fossil formations are found on either side of the Antartic. Same reptile called meosaurus is found only in S America and South Africa sediments. Plant remains, PLATE TECHTONIC THEORY: People had noticed that certain continents looked like they had once fitted together. Evidence built up over time and Alfred Wegner was allowed to publish his theory. He suggested that they were once all joined and called Pangaea. Wegner proposed that at some time land had drifted apart. Evidence included: 1)Continental fit: seemed to fit together if placed besides each other. ) Geological Evidence: rocks of the age and type are found in SE Brazil and South Africa. The trends of mountains in East USA and NW Europe are similar when they are placed in old positions. Similar glacial deposits are found in Antarctica, S America 3) Climatological Evidence: Places as far apart as Antarctica, North America and the UK all contain coal deposits of similar age that were formed in tropical conditions. They are no longer in tropical climate zones and must have drifted apart. 4)Biological Evidence: Similar fossil formations are found on either side of the Antartic.Same reptile called meosaurus is found only in S America and South Africa sediments. Plant remains, LANDFORMS ASSOCIATED WITH CONSTRUCTIVE MARGINS OCEANIC RIDGES: Where two plates pull apart there is a weaker zone in the crust and an increase in heat near the surface. The hotter expanded crust forms a ridge. The central part of the ridge may feature a central valley where a section of crust has subsided into the magma below. The split in the crust provides a low pressure zone where the more liquid lavas can erupt to form submarine volcanoes. If these eruptions persist, volcanoes may develop until they reach the surface.Islands can be formed. For instance Iceland a volcanic island on a spreading ridge. In 1963 eruptions created the island of surtsey to the south of Iceland. As crus t is pushed away from the heat source at the mid ocean ridge it cools, contracts and sinks towards deeper regions. Where it becomes covered in fine sediments. Occasionally fragments of ocean floor are left at the surface during subduction and the layers of pillow basalts and later deep ocean sediments are exposed. E. g. Toodos ophilite suit in Cyprus. LANDFORMS ASSOCIATED WITH CONSTRUCTIVE MARGINS OCEANIC RIDGES:Where two plates pull apart there is a weaker zone in the crust and an increase in heat near the surface. The hotter expanded crust forms a ridge. The central part of the ridge may feature a central valley where a section of crust has subsided into the magma below. The split in the crust provides a low pressure zone where the more liquid lavas can erupt to form submarine volcanoes. If these eruptions persist, volcanoes may develop until they reach the surface. Islands can be formed. For instance Iceland a volcanic island on a spreading ridge. In 1963 eruptions created the is land of surtsey to the south of Iceland.As crust is pushed away from the heat source at the mid ocean ridge it cools, contracts and sinks towards deeper regions. Where it becomes covered in fine sediments. Occasionally fragments of ocean floor are left at the surface during subduction and the layers of pillow basalts and later deep ocean sediments are exposed. E. g. Toodos ophilite suit in Cyprus. RIFT VALLEYS: When spreading occurs beneath a major land mass, the heating and subsequent updoming of the crust leads to fracturing and rifting. As the sides of the rift move apart, central sections drop down to form rift valleys.Mount Kenya are surface evidence of the igneous activity beneath. As 4000km long up to 50km wide and 600m in depth. This feature can still widen allowing the sea to inundate it. To the North two rifts have widened into the red sea and the gulf of Arabia respectively. Here the rifting has continued and NEW OCEAN FLOOR is forming between Africa on the SW side and Ar abia (NE). RIFT VALLEYS: When spreading occurs beneath a major land mass, the heating and subsequent updoming of the crust leads to fracturing and rifting. As the sides of the rift move apart, central sections drop down to form rift valleys.Mount Kenya are surface evidence of the igneous activity beneath. As 4000km long up to 50km wide and 600m in depth. This feature can still widen allowing the sea to inundate it. To the North two rifts have widened into the red sea and the gulf of Arabia respectively. Here the rifting has continued and NEW OCEAN FLOOR is forming between Africa on the SW side and Arabia (NE). Mid ocean ridges are irregular curving around the planet. If new ocean crust was created equally on both sides, it would appear to create the possibility of over lapping new crust on concave sections and divergence on convex sections.The fact that there are no mountains of ocean floor or sudden gaps in crust is explained by the fact that the seemingly continuous spreading ridg es are frequently bisected by transform (slip) faults, which allow the crust created at the ridges to move outwards at different rates. Seismicity associated with such movements on and around the ridges is characterised by shallow focus earthquakes. Mid ocean ridges are irregular curving around the planet. If new ocean crust was created equally on both sides, it would appear to create the possibility of over lapping new crust on concave sections and divergence on convex sections.The fact that there are no mountains of ocean floor or sudden gaps in crust is explained by the fact that the seemingly continuous spreading ridges are frequently bisected by transform (slip) faults, which allow the crust created at the ridges to move outwards at different rates. Seismicity associated with such movements on and around the ridges is characterised by shallow focus earthquakes. LANDFORMS ASSOCIATED WITH DESTRUCTIVE PLATE MARGINS Destructive plate margins are found where plates converge. There a re three types of convergent margin: 1)Oceanic plate meeting continental plate )Oceanic plate meeting oceanic plate 3)Continental plate meeting continental plate LANDFORMS ASSOCIATED WITH DESTRUCTIVE PLATE MARGINS Destructive plate margins are found where plates converge. There are three types of convergent margin: 1)Oceanic plate meeting continental plate 2)Oceanic plate meeting oceanic plate 3)Continental plate meeting continental plate 1) OCEANIC PLATE MEETING OCEANIC PLATE (CONVERGING) When two pieces of oceanic crust on DIFFERENT PLATES COLLIDE one is subducted beneath the other. The crust that has subducted may be marginally denser or one is moving faster than the other.The processes that accompany subduction are much the same as in the case of ocean/continental plate collision, BUT where the volcanoes usually erupt on crust covered by oceans they form islands. These form characteristically curving lines of new volcanic land known as island arcs with deep ocean trenches. Such island chains may develop over millions of years to become major land e. g. JAPAN OR INDONESIA. Subduction produces frequent shallow- to deep focus earthquakes, some of which are immensely powerful. e. g.In Indonesia where the Australian plate is being subducted beneath Eurasian plate there was an earthquake in 2004 measuring 9 on Richter scale. 2) OCEANIC PLATE MEETING OCEANIC PLATE (CONVERGING) When two pieces of oceanic crust on DIFFERENT PLATES COLLIDE one is subducted beneath the other. The crust that has subducted may be marginally denser or one is moving faster than the other. The processes that accompany subduction are much the same as in the case of ocean/continental plate collision, BUT where the volcanoes usually erupt on crust covered by oceans they form islands.These form characteristically curving lines of new volcanic land known as island arcs with deep ocean trenches. Such island chains may develop over millions of years to become major land e. g. JAPAN OR INDONESIA. Subduction produces frequent shallow- to deep focus earthquakes, some of which are immensely powerful. e. g. In Indonesia where the Australian plate is being subducted beneath Eurasian plate there was an earthquake in 2004 measuring 9 on Richter scale. 3) OCEANIC PLATE MEETING CONTINENTAL PLATE (CONVERGING) Oceanic crust is denser than continental.When plates collide the oceanic crust is SUBDUCTED or taken down into the upper mantle. As oceanic crust descends, friction with the overlying continental crust builds up and can cause MAJOR EARTHQUAKES. Destructive margins are some of the most seismically active zones in the world. Rocks scraped off the descending plate and folding of the continental crust helps to create young fold mountain chains on the edge of continental masses such as THE ANDES (South America). Deep ocean trenches are found along the seaward edge of destructive margins. They mark where one plates begins to descend beneath another.E. g Peru Chile 8km deep trench. The friction caused by the sinking slab of ocean floor also generates loads of heat leading to partial melting of the crust. Magmas derived from the melting of old ocean floor basalts. They try to rise up through fissures and by burning their way through overlying rock until they reach the surface. Where volcanoes erupt on land they help to create young fold mountains such as the Andes. Because magmas from which the volcanic lavas originate have incorporated elements of older crust and continental rocks as they rose, they are more silica rich and more acidic.These magmas flow less easily & leave intrusive such as batholiths within mountains and generating extrusive such as andesitic lava to erupt through volcanoes. Such sticker lava frequently blocks off their own vents until erupting violently to form conical shaped volcanoes of alternating layers of ash and lava. Vulcanicity is a key feature of subduction zones, around 80% of all active volcanoes are found around subduction zones. 4) OCEANIC PLATE MEETING CONTINENTAL PLATE (CONVERGING) Oceanic crust is denser than continental. When plates collide the oceanic crust is SUBDUCTED or taken down into the upper mantle.As oceanic crust descends, friction with the overlying continental crust builds up and can cause MAJOR EARTHQUAKES. Destructive margins are some of the most seismically active zones in the world. Rocks scraped off the descending plate and folding of the continental crust helps to create young fold mountain chains on the edge of continental masses such as THE ANDES (South America). Deep ocean trenches are found along the seaward edge of destructive margins. They mark where one plates begins to descend beneath another. E. g Peru Chile 8km deep trench.The friction caused by the sinking slab of ocean floor also generates loads of heat leading to partial melting of the crust. Magmas derived from the melting of old ocean floor basalts. They try to rise up through fissures and by burning their way through over lying rock until they reach the surface. Where volcanoes erupt on land they help to create young fold mountains such as the Andes. Because magmas from which the volcanic lavas originate have incorporated elements of older crust and continental rocks as they rose, they are more silica rich and more acidic.These magmas flow less easily & leave intrusive such as batholiths within mountains and generating extrusive such as andesitic lava to erupt through volcanoes. Such sticker lava frequently blocks off their own vents until erupting violently to form conical shaped volcanoes of alternating layers of ash and lava. Vulcanicity is a key feature of subduction zones, around 80% of all active volcanoes are found around subduction zones. 5) CONTINENTAL PLATE/CONTINENTAL PLATE CONVERGENCE where subduction of oceanic crust draws two continental masses together, a collision margin may develop.As continents have similar density and thus buoyancy, they will not be subducted. Instead they collide with each other. Volcanic associated with earlier subduction and sediments scraped off the vanishing ocean floor are mixed up and compressed to form young fold mountain chains with deep roots in the lithosphere. The subcontinent of India is an example: It was propelled by sea floor spreading of the indo Eurasian plate some 40 million years ago. This collision formed the Himalayan mountain chain. Himalayas are constantly changing because these highly folded and faulted regions do not become seismically quiet after 1st impact.At this extreme altitude wreathing and erosion reduce mountain height, but isostatic lift in some areas produced by continuing plate motion means that Everest is increasing by 2. 5cm a year. The whole region experiences high levels of seismicity causing earthquakes in 2001, Afghanistan 2002, Pakistan 2005, and China 2008. [isostatic lift= uplift of land mass resulting from tectonic processes] 6) CONTINENTAL PLATE/CONTINENTAL PLATE CONVERGENCE where subduction of oceanic crust draws two continental masses together, a collision margin may develop.As continents have similar density and thus buoyancy, they will not be subducted. Instead they collide with each other. Volcanic associated with earlier subduction and sediments scraped off the vanishing ocean floor are mixed up and compressed to form young fold mountain chains with deep roots in the lithosphere. The subcontinent of India is an example: It was propelled by sea floor spreading of the indo Eurasian plate some 40 million years ago. This collision formed the Himalayan mountain chain. Himalayas are constantly changing because these highly folded and faulted regions do not become seismically quiet after 1st impact.At this extreme altitude wreathing and erosion reduce mountain height, but isostatic lift in some areas produced by continuing plate motion means that Everest is increasing by 2. 5cm a year. The whole region experiences high levels of seismicity causing earthquakes in 2001, Afgha nistan 2002, Pakistan 2005, and China 2008. [isostatic lift= uplift of land mass resulting from tectonic processes] HOT SPOTS: Maps of volcano distribution indicate that although most active volcanoes are associated with divergent and convergent plate margins, others do not conform to this pattern. Hawaiian Islands are an example.Formed in the middle of the Pacific Ocean more than 3,200km from the nearest plate boundary. Some geologists believe the long lived and stationary hot spots are the result of plumes of magma originating deep within the mantle. Others suggest they are created from far less depth and in fact are moving slowly. As basaltic shield volcanoes erupt through the drifting oceanic crust, they may build up from ocean floor to form an island over time. However they become part of the plate and are gradually moved away from the heat source. Some islands will become eroded by waves and form flat topped sea mounts called guyots.Newer volcanoes erupt over the hot sport and a new island is formed. This sequence can form a chain of islands A new island will form to SE of Hawaii when the Loihi submarine volcano builds up to sea level. HOT SPOTS: Maps of volcano distribution indicate that although most active volcanoes are associated with divergent and convergent plate margins, others do not conform to this pattern. Hawaiian Islands are an example. Formed in the middle of the Pacific Ocean more than 3,200km from the nearest plate boundary. Some geologists believe the long lived and stationary hot spots are the result of plumes of magma originating deep within the mantle.Others suggest they are created from far less depth and in fact are moving slowly. As basaltic shield volcanoes erupt through the drifting oceanic crust, they may build up from ocean floor to form an island over time. However they become part of the plate and are gradually moved away from the heat source. Some islands will become eroded by waves and form flat topped sea mounts called guyo ts. Newer volcanoes erupt over the hot sport and a new island is formed. This sequence can form a chain of islands A new island will form to SE of Hawaii when the Loihi submarine volcano builds up to sea level. CONSERVATIVE MARGINS:These margins are sometimes referred to as passive or slip margins and occur where two plates meet and the direction of plate motion is parallel. Two examples: 1)San Andreas fault in Calafornia 2)Alpine Fault in New Zealand No crust is destroyed or created, although these areas of frequent seismic activity as the build up of friction as plates pass each other is released by earthquakes. THEY ARE NOT ASSOCIATED WITH ACTIVE VULCANISM. CONSERVATIVE MARGINS: These margins are sometimes referred to as passive or slip margins and occur where two plates meet and the direction of plate motion is parallel.Two examples: 1)San Andreas fault in Calafornia 2)Alpine Fault in New Zealand No crust is destroyed or created, although these areas of frequent seismic activity as the build up of friction as plates pass each other is released by earthquakes. THEY ARE NOT ASSOCIATED WITH ACTIVE VULCANISM. Earthquakes occur when a build up of pressure within the Earth’s crust is suddenly released and the ground shakes violently. The point within the crust where the pressure release occurs is known as the focus. This can be: 1) Shallow 0-70kmkm 2)Intermediate 70-300km 3)Deep 300-700kmThe seismic shock waves have their highest level of energy at the focus; energy decreases as the waves spread outwards. The place on the Earth’s surface immediately above the focus is called the epicentre. It receives the highest amount of energy and so the most potentially dangerous location. Seismic waves travel out from the focus, there are three types of waves: 1)P Waves- (primary) are the fastest and shake the Earth backwards and forwards. These travel the fastest and move through solids and liquids. 2) S- Waves (Secondary) are slower and move with a sideways motion, shaking the Earth at right angles to the direction of travel.They cannot move through liquids but are more damaging. 3) Surface Waves- these travel near to the surface and slower than the two mentioned already & they’re more destructive than either. They include L waves (long waves) which causes the ground to move sideways and Raleigh waves which make it move up and down. Earthquakes occur when a build up of pressure within the Earth’s crust is suddenly released and the ground shakes violently. The point within the crust where the pressure release occurs is known as the focus. This can be: 1) Shallow 0-70kmkm 2)Intermediate 70-300km 3)Deep 300-700kmThe seismic shock waves have their highest level of energy at the focus; energy decreases as the waves spread outwards. The place on the Earth’s surface immediately above the focus is called the epicentre. It receives the highest amount of energy and so the most potentially dangerous location. Seismic waves tr avel out from the focus, there are three types of waves: 1)P Waves- (primary) are the fastest and shake the Earth backwards and forwards. These travel the fastest and move through solids and liquids. 2) S- Waves (Secondary) are slower and move with a sideways motion, shaking the Earth at right angles to the direction of travel.They cannot move through liquids but are more damaging. 3) Surface Waves- these travel near to the surface and slower than the two mentioned already & they’re more destructive than either. They include L waves (long waves) which causes the ground to move sideways and Raleigh waves which make it move up and down. EARTHQUAKES EARTHQUAKES Magnitude and frequency: Magnitude is amount of energy released and is measured using a RICHTER SCALE. A logarithmic scale. An earthquake measuring 7. 6 is 10 times greater than one measuring 6. 6. The intensity of an earthquake is measured on the 12 point Mercalli scale which reflects the effects of the event.Frequency o f earthquake events varies greatly between seismically active regions (e. g Sunda Trench off SW coast of Indonesia) and seismic zones within the shield areas of ancient crust (Greenland) Seismometers are instruments that measure and record the shock waves created by earthquakes. They locate and measure the size of shock waves and are used in establishing patterns of seismic activity that may help predict future earthquakes. Aftershocks- are earthquakes that follow on from the main event and may last for months afterwards. They are generated by the Earth settling back after the disruption.Aftershocks in Indonesian earthquake of 2004 was followed by a series of aftershocks one being 6. 1 in magnitude. Magnitude and frequency: Magnitude is amount of energy released and is measured using a RICHTER SCALE. A logarithmic scale. An earthquake measuring 7. 6 is 10 times greater than one measuring 6. 6. The intensity of an earthquake is measured on the 12 point Mercalli scale which reflects t he effects of the event. Frequency of earthquake events varies greatly between seismically active regions (e. g Sunda Trench off SW coast of Indonesia) and seismic zones within the shield areas of ancient crust (Greenland)Seismometers are instruments that measure and record the shock waves created by earthquakes. They locate and measure the size of shock waves and are used in establishing patterns of seismic activity that may help predict future earthquakes. Aftershocks- are earthquakes that follow on from the main event and may last for months afterwards. They are generated by the Earth settling back after the disruption. Aftershocks in Indonesian earthquake of 2004 was followed by a series of aftershocks one being 6. 1 in magnitude. TSUNAMI: Enormous sea waves generated by disturbances on the sea floor.They are most often triggered by earthquakes and submarine landslides. Most devastating example occurred in December 2004 in Indonesia. TSUNAMI: Enormous sea waves generated by dist urbances on the sea floor. They are most often triggered by earthquakes and submarine landslides. Most devastating example occurred in December 2004 in Indonesia. HUMAN IMPACT: Depends on population density and distance from the epicentre Primary Impacts: *Collapse of buildings, roads and bridges *disruption to gas, electricity and water supplies Some are primary effects- directly from the earthquake, some are secondary e. g. lectricity breaks so they cannot cook etc. Secondary include: *Fires from ruptured gas mains *Contaminated water *Loss of trade HUMAN IMPACT: Depends on population density and distance from the epicentre Primary Impacts: *Collapse of buildings, roads and bridges *disruption to gas, electricity and water supplies Some are primary effects- directly from the earthquake, some are secondary e. g. electricity breaks so they cannot cook etc. Secondary include: *Fires from ruptured gas mains *Contaminated water *Loss of trade AVALANCHES & LANDSLIDES: Where the slope fa ilure occurs as a result of ground shaking.AVALANCHES & LANDSLIDES: Where the slope failure occurs as a result of ground shaking. LIQUEFACTION: Violent disruption of the ground causes it to become liquid like. Such extreme shaking causes increased pore water pressure which reduces the effective stress and therefore reduces the shear strength of the soil so it fails more easily. Can cause the movement of groundwater. Even though the surface may appear dry, excess water will sometimes come to the surface through cracks bringing liquefied soil, creating ‘soil volcanoes’. This can cause damage to buildings and underground utilities.Buildings can sink as a result. In San Francisco where development has occurred on reclaimed land in the bay area, the ground is far more likely to fail due to liquefaction. It is estimated that $100,000 million worth of damage was caused by this secondary effect. LIQUEFACTION: Violent disruption of the ground causes it to become liquid like. Suc h extreme shaking causes increased pore water pressure which reduces the effective stress and therefore reduces the shear strength of the soil so it fails more easily. Can cause the movement of groundwater.Even though the surface may appear dry, excess water will sometimes come to the surface through cracks bringing liquefied soil, creating ‘soil volcanoes’. This can cause damage to buildings and underground utilities. Buildings can sink as a result. In San Francisco where development has occurred on reclaimed land in the bay area, the ground is far more likely to fail due to liquefaction. It is estimated that $100,000 million worth of damage was caused by this secondary effect. CASE STUDIES CASE STUDIES PROTECTION PROTECTION PREDICTION PREDICTION EARTHQUAKE MANAGEMENT EARTHQUAKE MANAGEMENTEarthquakes are not evenly distributed over the planet; but instead, occur in broad, uneven belts. This is because the vast majority of earthquakes are related to plate motion and are therefore found around plate boundaries. *Most powerful are related to destructive margins where the descent of the oceanic crust creates frequent shallow to deep focus earthquakes. *Earthquakes at constructive margins are often submarine and usually distant from human habituation, presenting a relatively minor hazard. *Earthquakes at conservative margins where plates slip past each other a series of fault lines marks where the crust has failed catastrophically.San Andreas Fault for instance is not a single feature but a broad shatter zone of interrelated faults. In addition to this earthquakes occur in regions that do not appear to be near active plate margins. The earthquakes in China and central Asia occur along extensive lines of weakness related to the collision of India with the Eurasian plate over 50 million years ago. Earthquakes are not evenly distributed over the planet; but instead, occur in broad, uneven belts. This is because the vast majority of earthquakes are relate d to plate motion and are therefore found around plate boundaries. Most powerful are related to destructive margins where the descent of the oceanic crust creates frequent shallow to deep focus earthquakes. *Earthquakes at constructive margins are often submarine and usually distant from human habituation, presenting a relatively minor hazard. *Earthquakes at conservative margins where plates slip past each other a series of fault lines marks where the crust has failed catastrophically. San Andreas Fault for instance is not a single feature but a broad shatter zone of interrelated faults. In addition to this earthquakes occur in regions that do not appear to be near active plate margins.The earthquakes in China and central Asia occur along extensive lines of weakness related to the collision of India with the Eurasian plate over 50 million years ago. PREDICTION PREDICTION EARTHQUAKE MANAGEMENT EARTHQUAKE MANAGEMENT Example of unreliable prediction: 1980’s along San Adreas fau lt in Calafornia studies of paterns led to predictions of an earthquake between 1988 and 1992. The predicted earthquake actually happened in 2004. China 1975 observations of changes in land elevation ground water levels and animal behaviour led to an evactuation warning the day before of a 7. magnitiude earthquake struck. This saved many lives. BUT there was no warning of the 1976 Tangshan earthquake 7. 6 mag which caused 250,000 fatalities. Example of unreliable prediction: 1980’s along San Adreas fault in Calafornia studies of paterns led to predictions of an earthquake between 1988 and 1992. The predicted earthquake actually happened in 2004. China 1975 observations of changes in land elevation ground water levels and animal behaviour led to an evactuation warning the day before of a 7. 3 magnitiude earthquake struck. This saved many lives.BUT there was no warning of the 1976 Tangshan earthquake 7. 6 mag which caused 250,000 fatalities. Currently no reliable way to accurat ely predict when an earthquake will occur. BUT There are several methods: 1) Seismic Records- studying patterns of earthquakes and using these to predict the next event. Seismic shock waves are recorded on a seismometer or seismography. 2) Radon Gas Emissions- radon is an inert gas that is released from rocks such as granite at a faster rate when they are fractured by deformation. 3) Ground Water-deformation of the ground water can cause water levels to rise or fall. ) Remote sensing- some evidence that electromagnetic disturbances in atmosphere directly above areas about to have an earthquake can be detected. 5)Low frequency electromagnetic activity- detection of electromagnetic emissions transmitted from Earthquake regions satellite has made observations that show strong correlations between certain types of low frequency electromagnetic activity and the seismically most active zones on the Earth. Sudden change in the ionosphere electron density and temperature were recorded a wee k before a 7. magnitude earthquake occurred in South Japan in September 2004. 6)Surveying movement across a fault line- known as levelling. Currently no reliable way to accurately predict when an earthquake will occur. BUT There are several methods: 1) Seismic Records- studying patterns of earthquakes and using these to predict the next event. Seismic shock waves are recorded on a seismometer or seismography. 2) Radon Gas Emissions- radon is an inert gas that is released from rocks such as granite at a faster rate when they are fractured by deformation. ) Ground Water-deformation of the ground water can cause water levels to rise or fall. 4) Remote sensing- some evidence that electromagnetic disturbances in atmosphere directly above areas about to have an earthquake can be detected. 5)Low frequency electromagnetic activity- detection of electromagnetic emissions transmitted from Earthquake regions satellite has made observations that show strong correlations between certain types of low frequency electromagnetic activity and the seismically most active zones on the Earth.Sudden change in the ionosphere electron density and temperature were recorded a week before a 7. 1 magnitude earthquake occurred in South Japan in September 2004. 6)Surveying movement across a fault line- known as levelling. Authorities focus on: 1)Making buildings/cities more earthquake resistant 2)Raising public awareness about disaster prevention via an education programme 3)Improving earthquake prediction *Better evacuation routes and sites to receive evacuees make cities better able to withstand the effects of the earthquake. To reduce the risk of fire after an earthquake Japanese government encourage the building of fire resistant buildings and advanced fire fighter facilities *All buildings have strict standards to be earthquake proof (New law in 2007 which ensure buildings are double checked to ensure they meet requirements) – problematic for construction firms *Focus on areas prone to earthquakes such as KOBE and or cities like Tokyo where people from all over the world go to.Here there are real time equipment and dense observation methods. In dense populated areas such as Tokyo there are several buildings designed to be more resistant to earthquakes. (See below) Authorities focus on: 1)Making buildings/cities more earthquake resistant 2)Raising public awareness about disaster prevention via an education programme 3)Improving earthquake prediction *Better evacuation routes and sites to receive evacuees make cities better able to withstand the effects of the earthquake. To reduce the risk of fire after an earthquake Japanese government encourage the building of fire resistant buildings and advanced fire fighter facilities *All buildings have strict standards to be earthquake proof (New law in 2007 which ensure buildings are double checked to ensure they meet requirements) – problematic for construction firms *Focus on areas prone to earthquakes suc h as KOBE and or cities like Tokyo where people from all over the world go to. Here there are real time equipment and dense observation methods.In dense populated areas such as Tokyo there are several buildings designed to be more resistant to earthquakes. (See below) PROTECTION PROTECTION Citizens are advised to keep some supplies like food, water and blankets as well as first aid kits and emergency tools. Police info sheets ensure that people know what to do in each stage of an emergency. Smart meters are installed. These are fed seismic data to allow them to shut down gas supplies automatically in the event of an earthquake. Land use planning attempts to identify the areas at most risk and plan where to build schools and hospitals away from these areas.Insurance is available but even in rich countries like Japan few people are willing to pay for such specific cover. Only 7% of people of Kobe had insurance at the time of the earthquake in 1995. Citizens are advised to keep some su pplies like food, water and blankets as well as first aid kits and emergency tools. Police info sheets ensure that people know what to do in each stage of an emergency. Smart meters are installed. These are fed seismic data to allow them to shut down gas supplies automatically in the event of an earthquake.Land use planning attempts to identify the areas at most risk and plan where to build schools and hospitals away from these areas. Insurance is available but even in rich countries like Japan few people are willing to pay for such specific cover. Only 7% of people of Kobe had insurance at the time of the earthquake in 1995. DEFINITION: EXTRUSIVE ROCK- Igneous rock formed by the crystallisation of magma above the surface of the Earth INTRUSIVE ROCK- Igneous rock formed by the crystallisation of magma below the surface of the Earth DEFINITION:EXTRUSIVE ROCK- Igneous rock formed by the crystallisation of magma above the surface of the Earth INTRUSIVE ROCK- Igneous rock formed by the crystallisation of magma below the surface of the Earth BASALTIC (basic) LAVAS: – Originate largely from the upward movement of mantle material. They are most common along spreading ridges but are also found at hot spots and within more developed rift systems ANDESITIC (intermediate) LAVAS: – Are typical of destructive plate margins where crust is being destroyed RHYOLITIC (acid) LACAS: – Are most often found at destructive and collision margins.Pyroclastic material comprises a wide range of volcanic fragments from ash to larger volcanic bombs. They are characteristic of more gaseous phases of eruption, where the build up of gas beneath blocked volcanic vents creates a violent explosion, shredding the magma into finer particles. BASALTIC (basic) LAVAS: – Originate largely from the upward movement of mantle material. They are most common along spreading ridges but are also found at hot spots and within more developed rift systems ANDESITIC (intermediate) L AVAS: – Are typical of destructive plate margins where crust is being destroyedRHYOLITIC (acid) LACAS: – Are most often found at destructive and collision margins. Pyroclastic material comprises a wide range of volcanic fragments from ash to larger volcanic bombs. They are characteristic of more gaseous phases of eruption, where the build up of gas beneath blocked volcanic vents creates a violent explosion, shredding the magma into finer particles. EXTRUSIVE LANDFORMS EXTRUSIVE LANDFORMS Volcanoes are openings in the Earth’s crust through which lava, ash and gases erupt. Molten rock beneath the surface is referred to as magma but once it is ejected at the surface it is called lava. At depths the enormous pressure upon hot rocks keeps them in a semi solid state. *Fissures and fractures in the crust create low pressure areas that allow some material beneath the crust to become molten and rise. *If these molten rocks reach the surface they are said to be extrusive but if they’re injected into the crust they are said to be intrusive. *But both are termed igneous. Volcanoes are openings in the Earth’s crust through which lava, ash and gases erupt. Molten rock beneath the surface is referred to as magma but once it is ejected at the surface it is called lava. At depths the enormous pressure upon hot rocks keeps them in a semi solid state. *Fissures and fractures in the crust create low pressure areas that allow some material beneath the crust to become molten and rise. *If these molten rocks reach the surface they are said to be extrusive but if they’re injected into the crust they are said to be intrusive. *But both are termed igneous. SHAPE| Fissure Eruptions| Occur where an elongated crack in the crust allows lava to spill out over a large area. Found at spreading ridges where tension pulls the crust apart. E. Iceland in 1973. Found at rifts and early constructive margins. Made of: Basaltic Eruption: Gentle, persistent | | Shield Volcanoes| Made of basaltic rock and form gently sloping cones from layers of less viscous lava. Example: Mauna Loa in Hawaii (taller than mount Everest – from ocean floor). Found in hot spots where oceanic crust meets oceanic crust Eruptions: Gentle and predictable| | Composite Volcanoes| Most common found on land. Created by layers of ash from initial explosive phases of eruptions and subsequent layers of lava from the main eruption phases.E. g. Mount Etna and Vesuvius. (Italy) Rock type: Andesitic Location: Destructive Margins| | Acid or Dome Volcanoes| These are steep sided volcanoes formed from very viscous lava. As the lava cannot travel far it builds up convex cone shaped volcanoes. Lava may solidify in the vent| | Calderas| From when gases that have built up beneath a blocked volcanic vent result in a catastrophic eruption that destroys the volcanic summit, leaving an enormous crater where later eruptions may form smaller cones. | | ACTIVITY: Volcanoes have e rupted in living memoryDORMANT: Volcanoes have erupted within historical record EXTINCT: Volcanoes will not erupt again. ACTIVITY: Volcanoes have erupted in living memory DORMANT: Volcanoes have erupted within historical record EXTINCT: Volcanoes will not erupt again. With all volcanic regions, the majority of magma never reaches the surface but cools to form coarser grained igneous rocks beneath the ground. These rocks may contribute to surface geomorphology through uplift, erosion and expose at the surface. Batholiths form when large masses of magma cool very slowly producing coarse grained rocks.Where magma has been squeezed between existing strata it may form a sill (concordant) or a dyke (discordant). Dyke: A vertical intrusion with horizontal cooling cracks. Cools rapidly on contact with surrounding colder rock. Contracts and cracks, cuts cross bedding planes Batholiths: Being deep seated and surrounded by hot rock the magma cools slowly so that 1) large crystals form and 2) t here is a large metamorphic contact zone Sill: A horizontal intrusion along bedding planes with vertical cooling cracks. Cools rapidly on outside on contact with surrounding rocks.Contracts and cracks. With all volcanic regions, the majority of magma never reaches the surface but cools to form coarser grained igneous rocks beneath the ground. These rocks may contribute to surface geomorphology through uplift, erosion and expose at the surface. Batholiths form when large masses of magma cool very slowly producing coarse grained rocks. Where magma has been squeezed between existing strata it may form a sill (concordant) or a dyke (discordant). Dyke: A vertical intrusion with horizontal cooling cracks. Cools rapidly on contact with surrounding colder rock.Contracts and cracks, cuts cross bedding planes Batholiths: Being deep seated and surrounded by hot rock the magma cools slowly so that 1) large crystals form and 2) there is a large metamorphic contact zone Sill: A horizontal intrusi on along bedding planes with vertical cooling cracks. Cools rapidly on outside on contact with surrounding rocks. Contracts and cracks. *GEYSERS AND HOT SPRINGS: Even in areas where vulcanism does not produce active volcanoes water heated at depth in the crust by magma chambers can periodically escape as stream and hot water.A geyser is an intermittent turbulent discharge of superheated water ejected and accompanied by a vapour phase. *FUMAROLES: Are areas where superheated water turns to steam as it condenses on the surface. These features are typical of areas such as Solfatara in Italy where the mixture of steam and water mixed with sulphur rich gases gives rise to the collective name for these features of solfatara. *GEYSERS AND HOT SPRINGS: Even in areas where vulcanism does not produce active volcanoes water heated at depth in the crust by magma chambers can periodically escape as stream and hot water.A geyser is an intermittent turbulent discharge of superheated water ejected and accompanied by a vapour phase. *FUMAROLES: Are areas where superheated water turns to steam as it condenses on the surface. These features are typical of areas such as Solfatara in Italy where the mixture of steam and water mixed with sulphur rich gases gives rise to the collective name for these features of solfatara. Minor Extrusive Features Minor Extrusive Features

Bullies Should Be Held Legally Responsible Essay

We all know what bullying is. We usually tend to think of it as some huge kid threatening to beat you up if you don’t give them your lunch money. But sometimes, bullying goes so much further than that. Sometimes bullies go too far, and their victims make the unfortunate choice of ending their own lives. As awful as it is, it happens every day, and the worst part about it is those bullies aren’t held legally accountable for their actions, but they should be. Bullying is a form of harassment. It damages people physically and mentally. Even though the â€Å"normal† type of harassment is illegal, bullying someone literally to death isn’t. Rebecca Ann Sedwick was one of those victims who were bullied to death. She was a 12 year old girl in high school, and several other girls began taunting and making fun of her over a boyfriend issue. The taunting and teasing didn’t let up. Rebecca was both verbally and physically assaulted. One girl was reported tellin g Rebecca to â€Å"drink bleach and die†. Eventually Rebecca couldn’t take it anymore and she climbed to a concrete tower and hurled herself to her death. Rebecca was harassed, which is against the law, but people don’t seem to understand that. In addition to being a form of harassment, bullies should be held legally accountable for their actions because those who bully know the difference between right and wrong. In the case of minors, when bullying gets brought up, many people bring up the fact that their brains are not fully developed until the age of 20 or so. This is true, and I do not dispute it. However, just because their brains aren’t entirely developed does not mean that shouldn’t be held accountable for their actions. If a minor cheated on a test, would the claim about their brains be considered legitimate and make it to where they don’t receive punishment? Of course not, so why should bullying someone to death be any different? Finally, bullies should be legally responsible for their actions because it would act as a deterrent. When most people bully, they don’t really have any fear of consequences because they know that there really aren’t any, which is exactly why there should be serious consequences. Because of the lack of punishment, people just say hurtful things constantly without any thought about what might happen as a result. That is completely ridiculous and something must be done about it. If people knew that their bullying harassment might land them in jail, they would certainly think twice before making those nasty, attacking comments that cause such tremendous harm.  Those who have been victimized to their breaking point deserve justice, and holding their tormenters legally responsible is the only way they will receive it. The problem is, when someone has finally had enough of being bullied and they end their lives, no one sees it as anyone else’s fault but their own. Somehow suicide isn’t as bad as murder, when in fact, its every bit as devastating, if not even more.