Multiple choice

The oldest type of energy known to man is _____.

  1. wind power

  2. solar power

  3. tidal power

  4. geothermal energy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 The oldest energy known to man is Geothermal energy.This geothermal energy originates from the original formation of the planet, from radioactive decay of minerals, and from solar energy absorbed at the surface. It has been used for space heating and bathing since ancient Roman times, but is now better known for generating electricity

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