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Energy

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Transcript

  • 1. CHAPTER 17 ENERGY
  • 2. ENERGY ● ABILITY TO CAUSE CHANGE OR DO WORK. ● EVERY CHANGE INVOLCES ENERGY AND ENERGY IS RELATED TO WORK. ● ENERGY AND WORK USE SAME UNIT OF MEASUREMENT THE JOULE(J)
  • 3. 6 FORMS OF ENERGY ● KINETIC ● POTENTIAL ● CHEMICAL ● NUCLEAR ● THERMAL ● ELECTRICAL
  • 4. KINETIC ENERGY ● Mechanical energy of a moving object ● Example: Ball rolling across the floor
  • 5. POTENTIAL ENERGY ● Mechanical energy due to position ● Example: book sitting on your desk.
  • 6. CHEMICAL ENERGY ● Is stored in the bonds between atoms ● Examples: ● the foods we eat gives us energy. ● Cars use energy used in gasoline
  • 7. NUCLEAR ● When atoms break apart. ● Example: Nuclear power plants
  • 8. THERMAL ENERGY ● Moves from one object to another as heat. ● Example: Friction
  • 9. Electrical Energy ● Results from the movement of electrons ● Example: TVs and lights
  • 10. Energy Changes ● From one form to another ● All forms of energy can be used to create forces to do work ● Each type of energy can be changed into thermal energy.
  • 11. Law of Conservation ● Energy is not created or destroyed It is conserved ● Example: Bouncing a ball the ball stops bouncing and the floor absorbs the energy of the ball.