4:5 voabulary

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Across
  1. 2. a short slender metal pin that helps put and bring things together
  2. 6. a bar resting on a pivot used to move heavy loads when pressure is applied on an end
  3. 7. a plane inclined at a horizontal angle
  4. 8. a simple machine made up of two inclined planes together
Down
  1. 1. a simple lifting machine consisting of rope that unwinds from a wheel to provide a mechanical advantage
  2. 3. a machine with two other simple machines working together
  3. 4. a wheel with a round grooved rim which a cord passes through
  4. 5. a point where a lever rest or is supported by the pivot in which it turns