4:5

12345678
Across
  1. 5. a sloping ramp up which heavy loads can be raised by ropes or chains
  2. 6. a piece of wood or some other material having one think end and tapering to a thin edge
  3. 8. the point on which a lever rests or is supported and on which it pivots
Down
  1. 1. a machine consisting of two or more simple machines operating together
  2. 2. a wheel joined by a shaft to provide mechanical advantage
  3. 3. used to raise heavy weights
  4. 4. used to help move a heavy or firmly fixed load with one end when pressure is applied to the other
  5. 7. used to join things together so that it pierces whatever material