![]() Crude oil, coal, sunlight and wind are all examples of energy sources. A book teetering on a bookshelf is another example.Įnergy resources are natural resources that can be extracted or captured for the energy they contain. Water stored behind a dam is an example of potential energy. An object has potential energy when it is in a position to be acted upon by gravity. Potential energy or gravitational energy is the energy of position. ![]() ![]() The sun releases energy when it combines hydrogen atoms to form a helium atom. Nuclear power plants split atoms to release energy. This energy is released when nuclei are split apart (called fission) or combined (called fusion).
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