Gravity

If you throw a ball into the air, it always comes back.

Why does it do this?

Big things pull smaller things to them.

This is called gravity.

The Earth is very big.

A ball is small.

The gravity of Earth pulls the ball back to Earth.

Gravity keeps everything on Earth!

Gravity pulls smaller things to larger things.

The Earth is very big.

The gravity of the Earth pulls things to it.

Without gravity, we would float away!