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7 Cards in this Set
- Front
- Back
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mid-ocean ridge
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An undersea mountain chain where new ocean floor is produced; a divergent plate boundary
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sea-floor spreading
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The process by which molten material adds new oceanic crust to the ocean floor
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deep-ocean trench
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A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
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subduction
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The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
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plate
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A section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
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divergent boundary
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A plate boundary where two plates move away from each other
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convergent boundary
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a plate boundary where two plates move toward each other
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