Earth Core
May 22nd, 2009
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The Earth Core
Part one
1a)Crust- is its top layer, with a thickness of 5km (3mi) to 10km (6mi) for the oceanic crust, and 30km (20mi) to 50km (30mi) for the continental crust.
b)Lower/Upper Mantle- Is a ~ 2900km(1800mi) thick shell of compressed seal and heated rock, beginning below the earth’s crust (lithosphere).
c)Outer Core- extends to a depth of around 3000 miles beneath the surface. It is believed that this outer core is made up of super heated liquid molten lava.
d)Solid Inner Core- the Inner Core extends another 900 miles inward towards the centre of the earth. It is believed that this Inner Core is a solid ball of mostly Iron and Nickel.
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