Simple Machines

Simple machines make work easier for us by allowing us to push or pull over increased distances. 
There are SIX simple machines:

1.   Pulley - A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

2.   Lever - A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads. 

3.   Wedge - A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart.

4.   Wheel & Axle - A wheel with a rod, called an axle, through its center lifts or moves loads.

5.   Inclined Plane - An inclined plane is a slanting surface connecting a lower level to a higher level.

6.   Screw - A screw is an inclined plane wrapped around a pole which holds things together or lifts materials.

Inclined Plane

Levers

Wheel and Axle

Pulley