Across
- 1. Machines make this easier
- 2. A see-saw is an example of a "First Order -----"
- 5. The pivot point of a lever
- 7. The small ridged machine that can be used to fasten two objects together
- 9. A ramp is an example of a "-------- Plane"
- 10. Wheels with teeth
Down
- 1. A simple machine that rolls easily
- 3. The force required to move a load
- 4. A machine is never 100% efficient due to --------
- 6. The simple machine that uses a rope and a wheel to lift loads
- 8. A simple machine that looks like a triangle with a sharp point
- 11. The rod that goes through a wheel and allows it to turn