Which layer of the Earth is most dense? Explain why.

inner core

Explanation:

This layer is located at the center of the Earth and is composed of solid nickel and iron. This layer is the hottest, most dense, and has the most pressure.

As the Earth formed, the heavy elements migrated towards the center of the protoplanet through gravitational compression. This became the Earth’s inner core. It is the densest part of the planet and is principally composed of iron. The solid, inner core of iron has a radius of about 760 miles (1,220 km). It is surrounded by a liquid outer core composed of a nickel-iron alloy.

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