| A | B |
|---|
| compound machine | combination of two or more simple machines |
| efficiency | measure of how much of the work put in machine is changed into work done by the machine |
| effort force | force exerted on a machine that is used to do work |
| inclined plane | a simple machine consisting of a sloping surface |
| lever | simple machine made from a bar that pivots about a fixed point |
| machine | device that makes work easier |
| mechanical advantage | number of times a machine multiplies the effort force |
| pulley | simple machine made from grooved wheel and a rope |
| resistance force | force applied by a machine to overcome resistance |
| screw | an inclined plane wrapped around a cylinder |
| simple machine | a machine that does work with only one movement |
| wedge | an inclined plane with one or two sloping sides |
| wheel and axle | consists of two different size wheels that rotate together |
| work | transfer of energy when a force makes an object move |
