Energy and Simple Machines

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Across
  1. 1. A simple machine that uses a rope and wheel
  2. 9. Another word for an inclined surface
  3. 11. A slanted surface (two words)
  4. 13. Energy of motion
  5. 14. A simple machine with a sharp edge
  6. 16. Stored energy
  7. 17. A device that makes work easier
  8. 18. The force that pulls objects toward Earth
  9. 19. A circular simple machine (two words)
Down
  1. 2. A rigid bar that pivots on a fulcrum
  2. 3. Simple machine like a ramp
  3. 4. Energy stored when something is stretched
  4. 5. A push or pull
  5. 6. A simple machine made of a cylinder with a spiral groove
  6. 7. A simple machine that uses a rope and wheel
  7. 8. A heavy weight on a pulley
  8. 10. A wheel with a rod attached
  9. 12. Energy that comes from food
  10. 15. Ability to do work