Science Ch. 7

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Across
  1. 4. a slanted surface used to move an object upward
  2. 7. inclined plane wrapped around a cylinder
  3. 8. wheel and bar that helps the wheel turn
  4. 9. a bar that rests on a fulcrum
Down
  1. 1. a machine made of two or more simple machines
  2. 2. a simple machine with two inclined planes
  3. 3. a tool that makes work easier and has few to no moving parts
  4. 5. a grooved wheel with a rope around it
  5. 6. a push or pull on an object
  6. 8. using forced to make something move