Across
- 3. rod used to do work
- 5. put a lever against to shift a boulder
- 6. central point of a seesaw
- 7. found on vehicles
- 8. ramps and roller coasters
- 9. bigger than it is
Down
- 1. found on a screw
- 2. used to lift an elevator
- 4. object with no moving parts
- 5. two surfaces rubbing
- 7. forces things apart
- 10. holds wheels