Layers + Tectonic plates Flashcards

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1
Q

What are the Mechanical layers of the Earth?

A

Lithosphere Asthenosphere, Mesosphere, Outer Core, Inner Core

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2
Q

What are the compositional layers of the Earth?

A

Crust, Mantle, Core

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3
Q

Continental crust

A

Thicker but less dense, where we live

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4
Q

Oceanic Crust

A

Thinner but denser, will sub duct under continental crust and younger ocean crust

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5
Q

Lithosphere

A

Includes all crust and upper mantle (remember there are two layers of crust

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6
Q

Aesthenosphere

A

Sludgy, like oobleck or toothpaste.

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7
Q

Outer Core

A

Liquid

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8
Q

Inner Core

A

Solid, Made up of mostly iron, some nickle

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9
Q

What are the two seismic waves?

A

P + S

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10
Q

P waves are

A

Primary

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11
Q

P waves

A

go through all mediums

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12
Q

p waves

A

move longitudinally

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13
Q

p waves

A

faster than s - waves

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14
Q

P waves

A

Bend when moving between layers

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15
Q

P waves

A

40 degree Small shadow zone

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16
Q

S-waves

A

secondary waves

17
Q

s waves

A

shear waves

18
Q

S waves

A

Cannot go through liquids, so they stop at the outer core

19
Q

S-waves

A

move transversely

20
Q

S waves

A

slower than p - waves

21
Q

S waves

A

cause more damage

22
Q

s waves

A

104 degree shadow zone and around

23
Q

What does studying seismic waves help us with?

A

Learn about the interior of the earth

24
Q

Who discovered continental drift

A

Alfred Wegner

25
Q

What’s evidence of continental drift?

A

Fossils

26
Q

Convection cells

A

Rising and sinking of hot magma as it heats (less dense) and as it cools (more dense)

27
Q

Convergent boundary geo processes

A