Question

where does the energy for geothermal energy come from? the heat energy of the earth the heat energy of the sun

Explanation:

Geothermal energy is energy derived from the heat within the Earth. The Earth's internal heat comes from residual heat from its formation and radioactive decay of elements in the core and mantle. Solar heat is related to solar energy, not geothermal. So the correct source is the Earth's heat.

Answer:

The heat energy of the Earth