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The heat that is trapped inside the earth is known as :

  • A.Thermal energy
  • B.Mechanical energy
  • C.Kinetic energy
  • D.Geothermal energy

Answer: D

Heat trapped inside the earth is geothermal energy.

The word comes from the Greek geo (earth) and therme (heat). The heat comes from the earth's formation and from radioactive decay in rocks, and it reaches the surface in hot springs, geysers and volcanic areas, where it can be used to generate electricity or heat buildings.

Thermal energy is the general term for heat of any origin, and mechanical and kinetic energy relate to motion and position, so they do not name the earth's internal heat.

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