Science 4th Chapter 3

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Across
  1. 3. device that makes work easier
  2. 6. what like poles of a magnet do
  3. 7. part of a lever that holds and balances weight
  4. 10. base of a building
  5. 12. push or pull on an object to move it
  6. 14. type of force that does work
  7. 16. what opposite poles of a magnet do
  8. 17. two objects bumping into each other
  9. 18. most stable shape
  10. 19. discovered the laws of motion
  11. 21. acts like a giant electromagnet
Down
  1. 1. gives a building its shape
  2. 2. increased with a rough surface
  3. 4. type of force an electromagnet generates.
  4. 5. machine designed to overcome weight and make lifting easier
  5. 8. can be used to minimize friction
  6. 9. something a magnet has
  7. 11. property of matter that makes it resist a change in motion
  8. 13. the amount of matter an object has
  9. 15. type of force that prevents work
  10. 20. movement resulting from force