Basic vocabulary for introducing plate tectonics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Geophysicist | One who studies the forces that make and shape planet Earth
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| Plate Tectonics Theory | The theory that the pieces of Earth's lithosphere are in constant motion due to the convection currents in the mantle
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| Pangaea | The name of a single landmass that broke and gave rise to today's continents
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| Convection Current | The movement of the mantle caused by differences in temperature and gravity.
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| Tectonic Plates | Sections of the lithosphere(crust)that are made up of pieces of continental and oceanic crust.
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| Subduction | The process by which a more dense crust sinks beneath a lesser dense crust at convergent plate boundaries
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| Convergent boundary | A plate boundary where two plates move toward each other.
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| Mantle | The layer of hot, solid material between Earth's crust and core.
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| Lithosphere | A rigid layer made up of the uppermost part of the mantle and the lower part of the crust.
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| Divergent boundary | A plate boundary where two plates move away from each other.
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| Trench | A deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle
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| Asthenosphere | The soft layer of the mantle on which the lithosphere floats.
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| Continental Drift Theory | The hypothesis that the continents were once a large landmass that has broken up and drifted apart.
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| Sea Floor Spreading Theory | The process by which molten material from the mantle is adding new oceanic crust to the ocean floor
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Created by:
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