1. Energy

2. First some review… Write down your definition of energy.

3. Energy is …is the ability to make things move the ability to do work Energy can not be created or destroyed

4. Energy is divided into
All Energy
Potential
Energy
Kinetic
Energy

5. What is Energy What is Kinetic Energy What is Potential Energy

6. What is Potential Energy?
Energy that is stored and waiting to be used later

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

8. What is Kinetic Energy? Energy an object has due to its motion
K.E. = .5(mass x speed2)

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

11. 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

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

13. 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.

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

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

18. Right, heat.

19. Do Now
Look around the room and give 2 example each of how energy can change from one form to another. Make sure you use the all seven types of Energy.