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| visible energy from the sun and other sources |
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| Sound energy is a form of energy that is associated with vibrations of matter. It is a type of mechanical wave which means it requires an object to travel through |
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| Nuclear energy is the energy found inside the nucleus of atoms and can only be released when atoms are split. Some power companies that supply homes, schools and buildings with electricity use nuclear energy to generate electricity. |
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| Heat energy produced when the molecules of a substance vibrate. The more heat a substance has, the more rapid the vibration of its molecules. Heat energy flows from places of higher temperature to places of lower temperature. |
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| The energy stored on the chemical bonds of molecules that it released during a chemical reaction. Chemical energy holds molecules together and keeps them from moving apart. For example, a car engine uses chemical energy stored in gasoline, and moving people use chemical energy from food. |
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| Electrical energy exists when charged particles attract or repel each other. Television sets, computers and refrigerators use electrical energy. |
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| Potential energy is the energy stored by an object as a result of its position. A roller coaster at the top of a hill has potential energy. |
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| The energy of motion. For example, a spinning top, a falling object and a rolling ball all have kinetic energy. The motion, if resisted by a force, does work. Wind and water both have kinetic energy. |
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| Mechanical energy is energy that can be used to do work. It is the sum of an object's kinetic and potential energy. |
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