1. By Caroline Fitzgerald

2.  Gravity is a push or a pull if we didn’t have
gravity we would be flying in space.

3.  Friction is a force that slows things down

4.  Simple machines are machines that help us to
do work easier.

5.  A wheel and axle are an example of simple
machines they help by moving things.

6.  A wedge is another simple machine it helps
cut things.