Simple Machines

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Across
  1. 4. simple machines make work ________.
  2. 5. a ramp is an example of this type of simple machine
  3. 6. if one part of this type of machine is pushed, the other part turns.
  4. 9. a seesaw is an example of this type of simple machine.
Down
  1. 1. these are often the basic parts of complex machines.
  2. 2. a simple machine with one or two sloping sides
  3. 3. this simple machine changes the direction of force
  4. 7. simple machines increase mechanical ________.
  5. 8. a spiral inclined plane, like is found on soda bottles