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Forms of Energy
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What is energy? Ability to do work or cause change Produces Warmth
Produces Light Produces Sound Produces Movement Produces Growth Powers Technology
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POTENTIAL KINETIC Classes of Energy
Energy of motion Stored energy or energy of position Motion, Electrical, Sound, Radiant, Thermal Gravitational, Stored Mechanical, Nuclear, Chemical
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The NEED Project
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Potential Energy Gravitational Energy – energy an object or substance has because of its position Anything “up high”
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Potential Energy Stored Mechanical (Elastic)– stored in an object by the application of force Must push or pull on an object
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Nuclear Energy – energy stored in the nucleus of an atom
Potential Energy Nuclear Energy – energy stored in the nucleus of an atom Holds the atom together
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Chemical Energy – energy stored in the bonds between atoms
Potential Energy Chemical Energy – energy stored in the bonds between atoms Holds molecules together
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Kinetic Energy Mechanical (Motion) Energy – movement of objects or substances from one place to another .
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Electrical Energy – movement of electrons creates an electric current.
Kinetic Energy Electrical Energy – movement of electrons creates an electric current.
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Kinetic Energy Sound Energy – movement of energy through substances in the form of Longitudinal or compression waves
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Kinetic Energy Radiant Energy – electromagnetic energy that travels in transverse waves
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Kinetic Energy Thermal (Heat) Energy – internal energy of a substance due to the vibration of atoms and molecules making up the substance
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In Review Energy does work or causes change.
Two main classes of energy: Potential Energy – stored energy or energy of position Gravitational, Elastic, Nuclear, Chemical Kinetic Energy – energy of motion Motion/Mechanical, Electrical, Sound, Radiant, Thermal/Heat
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Transition: Forms to Sources
Forms - How Scientists Classify Energy Sources - Where We Get the Energy To Make Our Lives More Comfortable, Convenient, & Enjoyable Transition: Forms to Sources Chemical Chemical Chemical Motion Chemical Motion Nuclear Thermal Chemical Radiant 87.6% 8.6% 3.5% 0.2% 0.1% 8.2% 91.8% The NEED Project
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