Earth's Systems and Layers

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What is the shape of the Earth?

Sphere- shaped like a ball with all points on the surface equal distance from the center. Earth is not a perfect sphere. It is flattened at the poles.

This layer of the Earth is the thinnest layer and is made of Silicon, Iron, Aluminum and Calcium.

crust

This layer of the Earth is solid and is made of iron and nickel.

inner core

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