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jeopardyplatetech Answer Key Continental Drift #1 #2 #3 #4 Who developed the theory of continental drift? What was the name of the supercontinent landmass that Wegener named? Why was Wegeners theory rejected? Name three pieces of evidence that Wegener used to support continental drift #5 What is the name of the plant that Wegener used as fossil evidence? Alfred Wegener Pangaea Couldn't explain why the continents moved Continent fit, Fossil evidence, Rock types/Mountain ranges, and Ancient climate evidence Glossopteris Sea Floor Spreading #1 #2 #3 #4 #5 #1 #2 #3 #4 What do we call an under water mountain range? What is magma called once it erupts to the surface of the Earth? What is the process by which new seafloor is continuously made at mid ocean ridges? When it comes to sea floor spreading, where would you find the youngest rocks? mid-ocean ridge lava seafloor spreading What process brings hot material of the mantle toward the surface, causing magma to form? convection Plate Tectonics What are the large, brittle pieces of Earth's outer shell called? Plate Tectonics includes ideas from which two theories that we have been studying? What is it called when a lithospheric plate sinks into the mantle? What is the area around the Pacific ocean that has a lot of volcanic activity due Nearest to the mid-ocean ridges Lithospheric plates Continental drift and sea floor spreading Slab pull (or subduction) Ring of fire to very active plate boundaries called? #5 What is it called when the force of gravity moves the plate downward and away from the ridge? Ridge push Who Did What #1 #2 Who mapped the Pacific ocean with sonar? Who developed the theory of Continental drift? Harry Hess Alfred Wegener #3 #4 #5 Who named Pangaea? Who served in World War II? Who passed away before there work was validated? Alfred Wegener Harry Hess Alfred Wegener #1 #2 Hodge Podge (Miscellaneous) What can occur when two plates slide past each other? How many millions of years ago did Wegner believe that Pangaea existed? Earthquake 255 million #3 #4 #5 Where is the seafloor the newest? Name two pieces of evidence that supports sea floor spreading? What causes the magnetic stripes in sea floor spreading near the mid ocean ridges Magnetic Stripes, Sea floor drilling samples Pole reversals Final Question What was the name of the boat that first started to collect deep sea drilling samples from the seafloor? Glomar Challenger