Simple Machines Crossword

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Across
  1. 2. Inclined plane wrapped around a shaft or cylinder
  2. 8. A flat surface that is higher at one end
  3. 9. A form of wheels and axles where a toothed wheel works with others to alter the relation between the speed of a driving mechanism
  4. 10. A type of inclined plane
Down
  1. 1. In a ___________ class lever the fulcrum is at the end with the effort in the middle such as tweezers
  2. 2. In a ___________ class lever the fulcrum is at the end and the load is in the middle such as a wheel barrow
  3. 3. attached to an axle so that these two parts rotate
  4. 4. Wheel and axle with a groove around the outside
  5. 5. The point against which a lever is placed to get a purchase, or on which it turns or is supported
  6. 6. In a ____________ class lever the fulcrum is in the middle and the load and effort is on either side such as a see-saw
  7. 7. Two inclined planes joined back to back and are used to split things
  8. 11. A rod that goes through a wheel that allows the wheel to turn