Heat From Earth’s Interior

Earth’s interior

Earth layers diagram


Earth’s crust

the Earth has a radius of about 6370 km …

The Earth’s outermost surface is called the crust. The crust is typically about 25 miles thick beneath continents, and about 6.5 miles thick beneath oceans. …

The earth’s crust is the thickest below the continents, with an average of about 20 to 25 miles (30 to 40 km) and with a maximum of 45 miles (70 km). …


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