| A | B |
|---|
| a stiff bar that moves around a fixed point is called a fulcrum | Lever |
| a flat surface that is raised so one end is higher than the other | inclined plane |
| wide at one end and pointed at the other | wedge |
| consists of a rod attached to a wheel | wheel and axle |
| an inclined plane wrapped around a cylinder or cone | screw |
| a wheel that has a rope wrapped around it | pulley |
| a combination of tow or more simple machines | compound machine |
| levers are used to... | push , pull or lift things |
| inclined planes are used for... | move heavy objects up or down |
| wedges are used for... | cut or split objects |
| wheel and axles are used for.. | makes it easier to move or turn things |
| screws are used for... | to hold objects together |
| pulley is used for... | to lift heavy objects by changing the direction or amount of the force |
| force | a push or a pull |
| work | the use of force to get something done |
| push | a force that moves an object away |
| pull | a force that moves something towards or with you |
| effort | something that is produced by work |
