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Question
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
Solution
The forms of energy that are not derived from the sun are geothermal energy, nuclear energy, hydroelectricity and energy obtained from coal and petroleum.
Geothermal energy is the heat energy obtained from the fission of radioactive materials present in the hot rocks inside the earth. Nuclear energy comes from the nucleus of an atom. Hydroelectricity is obtained from the flow of water.
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