Simple Machines

Edit Answers
1234567891011
Across
  1. 3. What is a ramp wrapped around a rod?
  2. 4. What's the distance between the threads of a screw?
  3. 5. Simple Machines change size and direction of ?
  4. 6. What type of simple machine is a catapult ?
  5. 7. A simple machine that rotates around a central fulcrum
  6. 9. These animals used to pulled trolley cars.
  7. 11. The part of a lever around which it moves
Down
  1. 1. What are wheels with teeth ?
  2. 2. These are a type of ramp
  3. 3. What type of staircase is like a screw?
  4. 8. With a pulley system you use more ?
  5. 10. What can change the direction of a force ?