Test 2 notes- Geography

Test 2 notes- Geography - Chapter 2 The changing Global...

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Unformatted text preview: Chapter 2!!!!! The changing Global Environment Test 2 Info!!!! 9/28/09 Consumption of natural resources- U.S. has approximately 5% of world population Little over 300 million people We consumer 25% of the world’s resources Having a much greater impact on the entire world If China or India were to consume like us then there would be nothing left to consume because they are so large Human Imprint on Earth Trash at Mt. Everest Base Station Trash litters many rivers 1969 river caught on fire…call to action 1 Cuyahoga River Trash on the shores of the Outer Hebertes Islands Pebody!!! Plate Tectonics Relatively New Theory 1960’s-Sea Floor Spreading Alfred Wegener- 1915 continental drift theory • Converging plates destroy land mass • Diverging plates create new land mass • And a third one but idk!! What is it that causes them to push under one another Density And thinness Convective Upwelling Where does the energy come from? Not 100% sure 1)Energy left over from the creation of the solar system that is stored inside the Earth 2)Radioactive Decay • Things decay over time and produce an energy 7 major plates in the world 20 minor plates Beyond minor plates there are smaller plates and many others that have even disappeared. Transform boundaries Categories of Evidence 1) Physical Continuity 2) Biological Continuity Animals and plants 3)Material and Structural Continuity Appalachian Mountains 4)Climatic Continuity Bruce Heason and Marie Tharp Mapped the ocean floor using Sonar Realized there were irregularities Aged rocks on the ocean floor Rocks close to divergent rift zone Closer to coast lines older they got Earthquakes and Volcanoes Found patterns North American plate moving in one direction and Pacific plate moving another Pacific ring of fire Pacific plate moving counterclockwise moving to the northeast North American moving clockwise going north west Causing issues In about 10 million years San Francisco and L.A. will be side by side. Most of the population of the world lives on coastal areas. Geography and Human Settlement: A Restless Earth Plate tectonics/Continental drift: Similar theories Continental drift idea that continents drifted but no set reason to it Plate tectonics actual function of moving plates?! • Convergent • Divergent • Transform About 25 mya break up of super continent Pangaea Formation of Tethys sea (image)-Atlantic Movement of India to create Himalayan Mountain Range Thought by many that the Himalayans are as high as they will ever get • Isosity-solid body like a continent floats ♦ Ship at harbor loaded down with all types of cargo, when cargo is off the ship rises ♦ As its growing it is also sinking Formation of major fold mountain ranges along leading edges of North...
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Test 2 notes- Geography - Chapter 2 The changing Global...

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