Plate Tectonics and Related Concepts

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Plate Tectonics

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A scientific theory that says earth’s outer layers are made of giant moving plates.

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Continental Drift

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The theory that the continents are slowly moving apart due to moving tectonic plates.

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Alfred Wegener

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A German scientist that founded the theory of plate tectonics in 1912.

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Pangea

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The name of the single landmass that broke apart 200 million years ago and gave rise to today’s continents.

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Seismograph

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A tool that measures earthquake size and duration.