8
The mantle is about 1,700 miles (2,750 km) thick. The mantle gets warmer with depth; the top of the mantle is about 1,600° F (870° C); towards the bottom of the mantle, the temperature is about 4,000-6,700° F (2,200-3,700° C).
Added 3/20/2014 10:51:36 AM
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8
The crust is mainly made out of granite and light weight materials.
Added 3/20/2014 10:52:59 AM
This answer has been confirmed as correct and helpful.