| A | B |
|---|
| effort force | The force pput on one part of a simple machine |
| efficiency | How well a machine changes effort into useful work |
| fulcrum | The fixed point, or point that does not move, on a lever |
| inclined plane | A flat surface with one end higher than the other; a ramp |
| lever | A simple machine made of a bar that turns on a fixed point |
| pulley | A simple machine made of a rope or chain and a wheel around which the rope or chain fits |
| simple machine | One of the basic machines that make up other machines |
| screw | A inclined plane wrapped around a pole |
| work | That which is done on an object when a force moves an objectthrough a distance |
| wheel and axle | A simple machine made up of a large wheel attached to a small wheel or rod |
| wedge | A machine made up of two inclined planes placed back-to-back |
