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14 Cards in this Set
- Front
- Back
Plate |
A section of the lithosphere that slowly moves carrying of continental and oceanic crust. |
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Pangaea |
The name of the landmass that broke apart 200 million years ago and created today's continents |
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Continental Drift |
The hypothesis that the continents are slowly drifting across earth's surface. |
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Fossil |
A trace of an organism that has been preserved in rock |
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Mid - ocean ridge |
The undersea mountain chain where new ocean floor is produced |
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Sea - floor spreading |
The process by which molten material adds new oceanic crust to the ocean floor |
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Deep- Ocean trench |
A deep valley along the ocean floor though which oceanic crust slowly sinks towards the mantle. |
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Subduction |
The process by which oceanic crust sinks though a deep - ocean trench and back into the mantle. |
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Fault |
A break in earth's crust where slabs of rock slip past each other. |
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Rift valley |
A deep valley that forms where two plates move apart. |
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Transform boundaries |
A plate boundary where two plate move past each in opposite directions. |
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Divergent boundaries |
A plate boundary where two plates move away from each other |
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Convergent boundaries |
A plate boundary where two plates move toward each other |
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Sonar |
A device that determines the distance of an object under water by recording echoes of sound waves |