| A | B |
| Energy that is moving is called __________. | Kinetic Energy |
| What is the force between surfaces that oppose motion? | Friction |
| This is how fast an object is moving. | Speed |
| What is the ability to do work? | Energy |
| A by-product of friction is __________. | Heat |
| Friction will cause a ball rolling down a street to __________. | Slow down |
| Energy that is stored is called __________. | Potential Energy |
| This is the name given to an objects' direction and speed. | Motion |
| Any push or pull that causes an object to stop moving, start moving , or change directions is what? | Force |
| If gravity forces an object to fall, what direction is the object going? | Down |
| Describe the direction of a rocket's motion. | Up |
| Unless acted on by a force, an object in motion will __________. | Stay in motion |