Simple Machines

A simple machine is a device that helps to reduce the amount of _____ required to work.

A ______ is a grooved wheel with a rope running along the groove.

A sloping force, like a ramp, that reduces the amount of force required to lift an object.

A simple machine that can split things apart or hold a door open.

A simple machine that is made up of an incline plane wrapped around a cylinder. It is often used to hold things together.

Scissors are an example of a compound machine. What simple machines are used to make up this compound machine?

Flagpole

Lightbulb

Stairs

This device: wedge, lever, incline plane, wheel and axle