BJU 4.4 Forces and Machines

1234567891011121314151617
Across
  1. 3. any object that makes work easier
  2. 5. the force that pulls all objects toward the center of the earth
  3. 7. a grooved wheel with a rope that fits in the groove
  4. 8. done when force moves an object over a distance
  5. 9. a flat surface
  6. 11. a bar that turns on a point
  7. 14. something that is tilted up or down; sloped
  8. 15. the ridge on a screw
  9. 17. a push or pull
Down
  1. 1. the point where a lever turns
  2. 2. an inclined plane wound around an axle
  3. 3. a change in position
  4. 4. the force that causes an object to move
  5. 6. one or more inclined planes used to force materials apart
  6. 9. the distance between the thread peaks on a screw
  7. 10. the force that resists the movement of objects against each other
  8. 12. wheels and axles with "teeth" that work together
  9. 13. the weight of the object being moved
  10. 16. the rod running through a wheel