Plate boundary terms and definitions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Divergent boundary | A place where two plates move apart from each other
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Rift valley | Something that forms at a divergent boundary and is like a valley.
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Wegener's theory | Continental drift
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Convergent boundary | A place where two plates move towards each other
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Plate tectonics | A theory that explains how the plates form and move
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Lithosphere | Crust and upper mantle
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Sea-floor spreading | When magma pushes through the oceanic crust and pushes it away from a mid ocean ridge.
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Super continent in Wegener's theory of continental drift | Pangaea
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Transform boundary | When two plates slide past each other and create a fault
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Plate boundary | Where two plates meet
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Crust | Thinnest layer of Earth, made of mostly basalt and granite
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Asthenosphere | layer between crust and mantle, made of soft rock
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Wegener's evidence | Mountain formations, coal beds, glacier scratches, plants, animal fossils
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Mid ocean ridge | Something formed when a divergent boundary in the ocean continues and continues sea-floor spreading at the ridge
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Core | The center of the Earth
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