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green science class

on 6 November 2009

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Transcript of Energy

Energy Energy is is the ability to cause change. Chemical Energy Electrical Energy Kinetic Energy Thermal Energy Potential Energy Nuclear Energy Radiant Energy Law of Conservation of Energy: Energy is never created or destroyed. Energy Transformation: When energy is transformed from one form to another. Chemical Energy: Energy that is stored in a chemical bond. Electrical Energy: energy carried by electrical current that comes out of batteries and wall sockets, is generated at large power plants, and is readily transformed into other types of energy. Kinetic Energy: Energy from motion. Thermal Energy: Energy that all objects have; increase's as the object's temperature increases. Potential Energy: Energy stored up due to its position. Nuclear energy: Energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants. Radiant Energy: The energy of light. The steam that is produced from water being boiled or coal being burned then turns into Kinetic Energy because the steam goes through the turbine which spins the blades. The steam is pushed to the generator which spins a shaft and then electrical energy is produced. All energy originates from the sun. Fossil Fuels are nonrenewable resources, plants absorb solar energy that compact together and are formed into fossil fuels over millions of years. Nuclear Energy comes from the nucleus of an atom. Hydroelectricity comes from the potential energy of water and the source of it is water. Some examples of alternative energy resources are geothermal energy, solar energy and windmills.
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