There are three main sources of heat in the deep earth: 1, heat from when the planet formed and accreted, which has not yet been lost. 2 frictional heating, caused by denser core material sinking to the center of the planet, and 3:heat from the decay of radioactive elements.
Explanation:
There are three main sources of heat in the deep earth: 1, heat from when the planet formed and accreted, which has not yet been lost. 2 frictional heating, caused by denser core material sinking to the center of the planet, and 3:heat from the decay of radioactive elements.
