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Introduction Energy
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Introduction Energy


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  • 1. Energy: the ability to cause changes in matter Energy can be transform, or change, from one form into another.
  • 2. Example: A child kicks a ball. The child has energy from food Ball gets energy from foot Ground and air absorb energy from ball When all energy is used up the motion stops
  • 3. Can anyone think of another example of how energy can change forms?
  • 4. In your groups, answer the following question: Does a ball have energy when it is just sitting on the table? Why or why not?
  • 5. Yes, because someone gave it energy when they put it on the table. This is called potential energy.
  • 6. Potential Energy The energy of an object that is because of it's condition or position. Can be thought of as stored energy.
  • 7. Potential Energy changes to kinetic energy!
  • 8. c Energy nergy an object has because it is in mo
  • 9. Forms of Energy - Sound - Electrical - Thermal- Mechanical - Light - Chemical
  • 10. Sound Energy A type of kinetic energy because air or particles are in motion.
  • 11. Thermal Energy The tiny particles that make up matter are in motion, causing kinetic energy.
  • 12. Light Energy You can see energy when light comes off an object and hits your eyes.
  • 13. Electrical Energy Energy that caused by movement of electrical charges, or electricity.
  • 14. Mechanical Energy Potential Energy + Kinetic Energy = Mechanical
  • 15. Chemical Energy Energy that is released from a chemical reaction.
  • 16. Law of Conservation of Energy Energy does not appear or disappear. It only changes forms. Energy cannot be created or destroyed. The total amount of
  • 17. Examples: Flashlight: Batteries create chemical energy which causes it to emit light and heat energy. Radio: Uses electrical energy to create sound energy that we can hear. Car Engine: Chemical reactions in the car cause chemical energy which creates mechanical energy that moves the car. Wind Up Toy: Winding up the toy