Layers + Tectonic plates Flashcards

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
What's evidence of continental drift?
Fossils
26
Convection cells
Rising and sinking of hot magma as it heats (less dense) and as it cools (more dense)
27
Convergent boundary geo processes