Question

What are the layers of the earth?

Answer 1

Crust, Mantle, Core (Outer and Inner)

Explanation:

Crust is the thinnest layer. Its thickness varies, for example the crust in ocean or oceanic crust has it thickness of only about `8` `km` while in the continental crust it has a depth of up to `32` `km`. It is composed of O, Si, Al, Fe, Ca, Na, K, Mg, Ti, and H.

After that, there is a boundary discovered by Andrija Mohorovicic which is named after him. The Mohorovicic Discontinuity or sometimes known as the Moho.

The next one is the mantle which is about `2900` `km` in depth. This makes up about `80 %` of the Earth's volume and `68` `%` of the its mass. It composed mainly of Si, O, Fe, and Mg.

The core:
Outer core which has a depth of `2250` `km` is made of liquid Iron and Nickel. It surrounds the Inner core which has a radius of `1300` `km`. It is very dense. It is the innermost layer and is made of solid Iron and Nickel.

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