1. What are potential and kinetic energy?

2. First some review… Write down the definition of energy.
Write down the four of the seven types of energy and an example of each.

3. Energy…
…is the ability to make things move

4. The seven types of energy…
Chemical - gasoline,
Light – flash light,
Heat – burner on a stove,
Nuclear - sun,
Mechanical - car,
Sound – music on the radio,
Electrical - lightning

5. Definitions Kinetic Energy: the energy of motion
Potential Energy: stored energy

6. A Roller Coaster
A roller coaster speeds along its track. It has kinetic energy because it is moving.

8. A Roller Coaster
As it slows to a stop at the top of a hill, it has potential energy because of where it is. It has the potential to move because it is above the ground and has somewhere to go.

10. What type of energy is this? (Remember the seven types?)

12. Right, mechanical. What if the cars crashed and burned
Right, mechanical. What if the cars crashed and burned? What type would it be?

14. Right, heat.

16. Substances like wood, coal, oil, and gasoline have stored energy because of their chemistry – they can burn
Stored energy is potential energy

17. Potential Energy can be changed into Kinetic Energy
Also Kinetic Energy can be changed into Potential Energy