Simple Machines Crossword

123456789
Across
  1. 2. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
  2. 4. simple machine consisting of a sloping surface, used for raising heavy bodies
  3. 7. a mechanical device consisting of a grooved wheel turned by a cord or chain with a rigidly attached axle
  4. 9. a handle or bar that is attached to a piece of machinery and which you push or pull in order to operate the machinery.
Down
  1. 1. what is MA the unit of ?
  2. 3. is a piece of metal with a threaded surface and a point on one end and a slotted head that is twisted to penetrate and fasten two things together.
  3. 5. what is ME the unit of ?
  4. 6. a type of simple machine that uses a wheel with a groove in it and a rope.
  5. 7. ? = F x D
  6. 8. what is watt the unit of ?