December 7-11
**Vocabulary Test on Wednesday December 16**
Unit F- Chapter 1
1. force- a push or a pull
2. push- a pressing force
3. pull- a tugging force
4. zigzag- sharp turns back and forth
5. motion- moving from one place to another
6. surface- the top or outside of something
7. friction- a force that makes it harder to move things
8. wheel- a roller on and axle