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