Plate Tectonics Theory - moves. The continental plates are...

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Plate Tectonics Theory It is believed that many years ago all the continents were joined together as one big land formation, but as time progressed, the continental shelves began to move and separate. The land formation slowly shifted away from each other until they formed into the continents we known them as today. This theory, also known as Pangaea explains why we have earthquakes and what could cause volcanic structures and their eruptions. The process of mantle convection and plate movement is when the heat in the Earth’s core rises to the surface it pushes left or right until it can hit the surface, much like in a boiling pot of water. The heat rises causing the water to boil and try to escape through the surface, with the landmasses are in the way the heat will push through those cracks until the obstruction
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Unformatted text preview: moves. The continental plates are separated by such cracks or plate margins. When the pressure escapes through these margins, it causes the continental plate to shift away from each other. Harry Hess, a geologist and a United States Navy officer in World War II, was considered one of the founders to the theory of plate tectonics. Hess introduced the theory that the Earths crust moved away from long volcanic ridges, also known today as the Sea floor spreading. Hess helped established Alfred Wegeners theory of continental drift. Wegener, a German scientist believed that after studying the different large landmasses the Earth fit together like a puzzle. By studying rock types, geological structures and fossils, he was able to determine the similarities on each continent....
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This note was uploaded on 06/28/2010 for the course SCI245 sci245 taught by Professor N/a during the Spring '10 term at University of Phoenix.

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