# The 6 Simple Machines

## The Inclined Plane

The inclined plane is used to push or move something up onto something or somewhere. For example a ramp on a moving truck would be used to push items from the house and on the ground up into the moving truck.

## The Pulley

A pulley is used to move, raise or lower a load. A pulley is like the wheel and axle except the pulley has a rope wrapped around a wheel and attached to the load and you. As you pull down, for example on a flagpole, the load will lift up.

## The Wedge

The wedge is used to split things apart or to hold something in place. A wedge is the same shape as an inclined plane just used in a different way. For example a doorstop is a wedge where when you push the point edge under the door it holds it in place.

## The Lever

The lever is used to pry something out or up from something or somewhere. For example a teeter totter is a lever because it is used to push the other person up. When one person pushes down the teeter totter pivots over the point (fulcrum) and the other person lifts up.

## The Screw

The screw is used to build things. The screw is like a long skinny inclined plane wrapped around a thin piece of metal. For example a building screw is used to attach different pieces of wood together. You can do this by turning the screw around and around in the wood.

## The Wheel and Axle

The wheel and axle is a type of lever. It is used to move things around faster and easier. For example on a wheelbarrow the bucket is sitting on top of the axle. When you push the wheelbarrow the wheel rotates the axle causing the wheelbarrow to move.