Geography; Tectonics Homework 18.11.24 Flashcards

(10 cards)

1
Q

Continental Crust

A

the part of the earth’s crust (outer layer) that makes up the continents (land)

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2
Q

Tectonic plates

A

huge segments of the earth’s crust

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3
Q

Plate boundaries

A

where two tectonic plates meet

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4
Q

Constructive plate boundary

A

when two plates are moving apart from each other

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5
Q

Destructive plate boundary

A

when an oceanic plate meets and continental plate the oceanic plate is subducted under the continental plate (oceanic plate is more dense)

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6
Q

Conservative plate boundary

A

when two plates move past each other

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7
Q

Collision plate boundary

A

when two continental plates collide

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8
Q

Seismic waves

A

sudden movement of the earth’s crust, fast waves of energy

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9
Q

Deep focus earthquakes

A

occur only at destructive boundaries 70-700 km under the Earth’s surface

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10
Q

Shallow focus earthquakes

A

occur at conservative boundaries and in the upper part of destructive and collision boundaries, they start within 70 km of Earth’s surface.

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