| A | B |
|---|
| A seesaw and a wheel barrow are examples of this kind of simple machine | lever |
| A force acting through a distance | work |
| A combination of 2 or more simple machines | complex compound |
| The unit for work in the metric system | joule |
| A rope wrapped around a grooved wheel | pulley |
| The rate at which work is done | power |
| Machines make work easier because they change the ____________ or __________________ of the force. | size and direction |
| The unit for power in the metric system | watt |
| A ferris wheel is an example of a ... | wheel & axle |
| The work that comes out of a machine can never be greater than the work that goes into the machine because of this. | friction |
| The fixed point a lever moves about. | fulcrum |
| An inclined plane wrapped around a central bar. | screw |
| A zipper uses this simple machine | wedge |
| simple machine used by people in a wheel chair to move up a sidewalk | inclined plane |
