Structures of the Earth Flashcards

1
Q

The compositional layers of the earth (in order)

A

Crust - Mantle - Core

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2
Q

Compositional layers of the earth (in order)

A

Crust (0-100km) - Mantle (100-2900km) - Core (2900-6370km)

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3
Q

Mechanical Layers of the earth (in order)

A

Lithosphere (0-100km) - Asthenosphere (100-350km) - Mesosphere (350-2900km) - Outer core (2900-5100km) - Inner core (5100-6370km

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4
Q

The thinnest and outermost later of the earth

A

Crust

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5
Q

Underneath some mountains, the crusts thickness extends to ___

A

72 kilometer

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6
Q

oceanic crust is made of dense rocks such as

A

Basalt

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7
Q

Continental crust is made of less dense rocks such as

A

Granite

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8
Q

the mantle takes up about __ of the earths total volume and about __ of its total mass

A

80% total volume, 68% total mass

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9
Q

Is made up of iron and nickel (creates the earths magnetism)

A

Outer core

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10
Q

temp reaches 5000°c (Immense pressure)

A

Inner core

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11
Q

Meteorite analysis have revealed that the most common type is ______

A

Chondrite

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12
Q

this is the layer in which the lithosphere moves on

A

Asthenosphere

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13
Q

This mechanical layer is otherwise known as the soft layer of the mantle

A

Asthenosphere

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14
Q

The layer below the asthenosphere but above the outer core

A

Mesosphere

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15
Q

Extremely Rigid.

A

Mesosphere

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16
Q

a solid ball

A

Inner core

17
Q

extreme temperature, allows metals to remain in their liquid phases

A

Outer core