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Transcript
Energy and Power By: Auguste Goodin What is Energy Energy is the ability to do work. Kinetic Energy Kinetic Energy is energy of motion. • Example 1- A ball rolling down a hill. • Example 2- Running Potential Energy • Potential Energy is energy that is stored in an object. • Example 1- A bike on top of a hill waiting to get the energy out by going down the hill. • Example 2- Sleeping before awakening to alarm clock. Chemical Energy Chemical energy is the energy stored within chemical compounds. • Example 1- Batteries. • Example 2- Burning a candle. Mechanical Energy Mechanical energy is the kind of energy that can do mechanical work directly. • Example 1- An airplane soaring through the sky has mechanical energy. • Example 2- A guitars strings being plucked. Electrical Energy Electrical Energy is really the effect moving electrical charges from one point to another. • Example 1- That charge of electricity moving through the power lines. • Example 2- A microwave. Energy Conversion One important property of energy is it’s ability to change from one form to another form. • Example 1- Chemical Energy from fossil fuels (Coals, Oil, and Natural Gases) can be converted into Heat Energy. Law of Conservation of Energy The fundamental principle of physics that the total energy of an isolated system is constant, despite internal changes. • Example 1- When water is used to produce electricity. Resources http://www.schools.utah.gov http://www.wikieducator.org http://www.wordwebonline.com
