Ch. 13Lesson 1
What is energy?
energy •ability to do work & cause a change in matter
examples of forms of energy:
1. Heat
2. Light energy
3. Electrical energy
4. Sound energy
5. Chemical energy
potential energy
• Stored energy
• Ability to change into another kind of energy to do work or cause a change
fuel• source of potential energy
• examples:
• fossil fuels- oil, coal, gasoline – energy comes from sunlight
• batteries
changes to
kinetic energy•energy of motion
kinetic energy• examples:
–car burning gasoline car moves
–skier skiing downhill
energy
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