Question

What are two sources of heat in the earths interior

Answer 1

you have the inercore and outer core.

Answer 2

The flow of heat from Earth's interior to the surface is estimated at terawatts (TW) and comes from two main sources in roughly equal amounts:

• radiogenic heat produced by the radioactive decay of isotopes in the mantle and crust
• primordial heat left over from the formation of the Earth. The other main sources of heat in the deep earth are:

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
3. Heat from the decay of radioactive elements.