Layers of Earth

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Crust

the outermost layer of Earth; Thickness - 5-70 km, Composition - rock, State of Matter - solid, Temperature - variable

Lithosphere

the upper mantle and the crust; Thickness - 250-300 km; Composition - rock, State of Matter - solid

Upper Mantle

the upper portion of the mantle; Thickness - 200-300 km, Composition - rock, State of Matter - solid, Temperature - 2800-3000oC

Outer Core

surrounds the inner core; Thickness - 2250 km, Composition - iron and nickel, State of Matter - molten, Temperature - 4000-5000oC

Inner Core

the center of the Earth; Thickness - 1280 km, Composition - iron and nickel, State of Matter - solid, Temperature - 6000-7000oC

Mesosphere

the lower portion of the mantle; Thickness 2000-2200 km, Composition - rock, State of Matter - solid, Temperature - 3200-4000oC

Asthenosphere

the middle portion of the mantle; Thickness - 400-600 km, Composition - rock, State of Matter - molten, Temperature - 3000-3200oC

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