Plate Tectonics Flashcards

1
Q

Divergent Boundary

A

A plate boundary where two plates move away from each other

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2
Q

Convergent Boundary

A

A plate boundary where two plates move towards each other

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3
Q

Transform Boundary

A

A plate boundary where two plates move past each other in opposite directions

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4
Q

Subduction

A

The process by which oceanic sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary

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5
Q

Plate Tectonics

A

A theory stating that earth’s surface is broken into plates that move

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6
Q

Faults

A

A break in earth’s crust

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7
Q

Rift Valley

A

A deep valley that forms where two plates move apart

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8
Q

Convection Current

A

A current caused by the rising of heated fluid and sinking of cooled fluid

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9
Q

Continental Crust

A

A solid, thin outermost layer of earth under the continents

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10
Q

Oceanic Crust

A

Earth’s crust located under the oceans (denser than continental crust)

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11
Q

Pangaea

A

A supercontinent containing all of earth’s land that existed about 225 million years ago

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