Layers of the Earth Flashcards by yohanna peralta

Q

Outermost and thinnest layer of the earth

A

Crust

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Q

5-70 km thick

A

Crust

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Q

Granitic rocks (silica and magnesium)

A

Continental Crust

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Q

Basaltic rocks (silica and iron)

A

Oceanic Crust

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Q

Thickest layer of the earth

A

Mantle

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Q

How much does mantle take up the earth’s mass?

A

80%

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Q

Solid rock

A

Upper Mantle

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Q

Semi-solid rock

A

Lower Mantle

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Q

3700-6000 degrees celsius

A

Core

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Q

very dense center of our planet

A

Core

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Q

ONLY liquid layer

A

Outer Core

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Q

controls the earth’s magnetic field

A

Outer Core

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Q

2270 km thick

A

Outer Core

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Q

SOLID nickel and iron

A

Inner Core

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Q

rigid and outermost layer of the earth

A

Lithosphere

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Q

includes crust and uppermost part of the mantle

A

Lithosphere

Q

contains major and minor blocks of rocks

A

Tectonic Plates

Q

brittle and rigid, and easily deform under stress

A

Lithosphere

Q

semi liquid part of the mantle

A

Asthenosphere

Q

easily deformed under heat

A

Asthenosphere

Q

circulation of heat in the mantle

A

Convection Current

Q

transfer heat from lower region to higher region

A

Convection Current

Q

large slab of rocks

A

Tectonic Plates

Q

2 crust meet

A

Conrad Discontinuity

Q

Crust and Upper Mantle

A

Moho Discontinuity

Q

Upper Mantle and Lower Mantle

A

Repetti Discontinuity

Q

Lower Mantle and Outer Core

A

Guttensburg Discontinuity

Q

Outer Core and Inner Core

A

Lehmann Discontinuity