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Earth components
Earth has spherical shape with 40000 km as perimeters and 6371km as a
radius. This radius divided into three parts:
Core: it about 3475 km distance, which it has molten minerals at 1900 º –
4150º C
Mantle: it about 2900 km distance, which it has solid minerals
Crust: it about 15-50 km distance, where it surrounds the earth
