Simple Machines

A bar balanced on a fulcrum and is pushed down at one end to lift a heavy object.

• Pulley

• Lever

• Screw

A rope around a wheel to raise, lower, or move a load when the rope is pulled.

• Wedge

• Wheel & Axle

• Pulley

An inclined plane wrapped around a pole used to hold things together or lift things.

• Screw

• Wedge

• Lever

A flat surface with a slope used to move an object from one point to another.

• Wheel & Axle

• Inclined Plane

• Pulley

A wheel attached to a bar to carry heavy loads long distances.

• Lever

• Screw

• Wheel & Axle

A tool that is wide at one end and pointed at the other used to separate things.

• Wedge

• Lever

• Screw

What do machines do?

• Make work HARDER.

• Make work EASIER.

True or False: Simple machines have few or no moving parts.

• True

• False

True or False: Simple machines change the direction of a force or the amount of force needed to do something.

• True

• False

A fishing rod uses a wheel and rope to raise up the fish.

• Screw

• Pulley

• Inclined Plane