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The Highest and Lowest points of the Lithosphere are both found at the Earths plate boundaries, with reference to the process of plate tectonics, explain why this is so.

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Introduction

Patrick Brosch Period 8 Geography Higher IB September 16th, 2000 IB EXAM ESSAY QUESTION Question: The Highest and Lowest points of the Lithosphere are both found at the Earths plate boundaries, with reference to the process of plate tectonics, explain why this is so. The process of plate tectonics, also known as Orogenesis, has shaped Planet Earth to what it is today. The four different spheres; Lithosphere, Hydrosphere, Atmosphere, and Biosphere, have worked together to create a beautiful a gigantic Ecosystem where Fauna, Flora, Detritus Feeders (Bacteria and other Micro-organisms) and Decomposers have created a world to live in with the highest and smartest known species; the Human. Plate Tectonics has not only build our world but also helped to destroy it and to rebuild it in different shapes and forms. The Earths Landmasses used to be joined together known under the name of Pangea. After millions of year the art of plate tectonics has moved this large landmass apart into smaller landmasses known as Continents and Islands. ...read more.

Middle

As it slides under the lighter Continental Plate it creates a Subduction Zone which is the point where the Oceanic Plate is swallowed by the magma and melts to create more magma. One way for the pressure to be released is by Volcanoes which are very evident at the site of Destruction. Example: Andes Ranges, South America. Collison Zones- is when two continental plates move together in equal force to create mountain chains, often known as Fold Mountains. None of the plates are pushed under like in the Destructive Margin because they both have no Ocean Mass on it and they move together with equal force which makes both plates fold upwards to create new mountain chains. Example: Mt. Everest, Himalayas. Conservative (Passive) Margin- is when two plates move parallel to each other sliding next to each other without moving away or towards each other. These are also called Transform Faults. Example: San Andreas Fault, California. These different methods of Orogenesis have created the earths upper layer on which we live on with all the other species. ...read more.

Conclusion

Figure 1.1 --------------------------------------------------------------------- Figure 2.1 Figure 3.1 PLATE MARGINS: Figure 4.1 "Pangea Ultima" will form 250 million years in the Future. "Current Plate movement is making the Pacific Ocean smaller, the Atlantic Ocean larger, and the Himalayan Mountains taller!" - Anonymous - The next Pangea, which is called "Pangea Ultima" will form as a result of the subduction of the ocean floor of the North and South Atlantic which lies east of North America and South America. This "supercontinent" will have a small ocean trapped in its center. Figure 5.1 The picture below shows the Ring of Fire, which is an area which is full of Volcanoes. It also shows the Hot Spot (Hawaiian Islands), and the view of the overall Plate Tectonics. Figure 6.1 THE GLOBAL PLATES- Plate Tectonics has shaped and created all of this. Without it our ecosystem where we live in with the Flora and Fauna would be nothing. Although the Lithosphere is important we shall not forget about the Hydrosphere, Biosphere, and Atmoshpere who all work together to create and construct the Planet Earth, our very own and large Ecosystem. LIST OF SOURCES 1. http://131.215.225.2/collections/geology/platetec.htm 2. www.scotese.com 3. www.seismo.unr.edu/ftp/pub/louie/class/100/plate-tectonics.html 4. Encarta 99 Encyclopedia CD-ROM 5. My Notes and Knowledge ...read more.

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