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by Jaylee Holland
Inner Core
800 miles thick
 almost entirely composed of iron
 extremely hot, but the pressure keeps the
iron from melting
 12,000 degrees Fahrenheit
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Outer Core
1,300 miles thick
 composed mainly of a nickel-iron alloy
 metal is molten
 9,000 degrees Fahrenheit
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Mantle
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average thickness of about 1,800 miles
contains the asthenosphere
The upper mantle and the crust compose the
lithosphere.
composed mainly of ferro-magnesium silicates
This is where most of the internal heat of the
Earth is located.
Makes up 80% of earth's volume
4,500 degrees Fahrenheit
Crust
5-30 miles thick
 composed of basalt and granite
 The temperature average in the crust is 900
degrees Fahrenheit.
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