Journey to the
Center of Earth
Layers of the Earth
• Crust
• Mantle
• Outer Core
• Inner Core
The Crust
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Layer that we live on (Lithosphere)
5-25 miles thick
Consists of cooled rock
Thinnest layer of the earth
There are 2 kinds of Crust: Continental
(thicker) and Oceanic (thinner)
Crust
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• Semi-liquid
(magma)
• 3000 km wide
• softer closer to
the surface
(Asthenosphere)
• Has convection
currents that
move the
continental plates
The Mantle
The Mantle
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The Outer Core
• Liquid, molten rock
• Very high temperatures
• Made of Nickel and Iron
The Inner Core
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Solid layer
Solid because of high pressure
Mostly Iron
6,000 degree Celsius.
2,100 km wide
The Core
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are needed to see this picture.