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10 Cards in this Set
- Front
- Back
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Mid-ocean ridges |
Mountain Ranges |
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What does sea-floor spreading add to the ocean floor? |
Crust |
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Deep-ocean trenches |
Underwater canyons |
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Subduction |
The process which the ocean floor sinks beneath a deep-ocean trench and back into the mantle again
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What can subduction and sea-floor spreading can change? |
The size and shape of the oceans
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Plates |
Earth's lithosphere, it's outer shell, is like an eggshell broken into pieces separated by cracks |
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divergent boundary |
plates move apart |
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Convergent boundary |
plates Come together |
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Transform boundary |
Plates slip past each other |
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What is the theory of plate tectonics? |
The theory of plate tectonics states that Earth's plates are in slow, constant motion, driven by convection currents in the mantle
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