Geography - Hazardous Earth

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7 Terms

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Crust

0-70 km, Solid rock, Lightest, Thinnest layer

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Mantle

70 - 2,900 km, Silicate rocks, Mainly solid, Very dense, Contains Asthenosphere

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Outer core

70 - 2,900 km, Liquid iron & Nickel, Very dense

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Inner core

5,100 km - 6400 k, Solid iron & Nickel, Densest.

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Lithosphere

Rigid outer layer, Includes crust + uppermost solid mantle

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Asthenosphere

Beneath Lithosphere partially molten rock, Flows slowly

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Plate Motion

Convection currents in Asthenosphere move the lithospheric plates