Question

What is heat from inside the earth called?

Answer 1

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: the radiogenic heatproduced by the radioactive decay of isotopes in the mantle and crust, and the primordial heat left over from the formation of the Earth.

Answer 2

The heat from inside the earth is called geothermal energy.

• The geothermal energy is produced when the radioactive particles that are present in the core of the earth undergo slow decay.
• The term geothermal is derived from the Greek terms 'geo' which means earth and 'therme' which means heat.
• As the heat inside the earth is produced continuously, thus geothermal energy is a renewable source of energy.