A force is a push or a pull. Forces can move or stop things. They can also make things speed up or slow down.


This little man is trying to push the box. He is using a force.

Sir Isaac Newton was one of the first scientists to study gravity and force.

Sir Isaac Newton started to study gravity when an apple fell

onto his head. He wanted to know why it didn't move up. He discovered that there was an invisible force that pulled everything towards the centre of the earth. He called this gravity.

WHAT IS GRAVTY? Gravity is a force that pulls everything to the centre of the earth. In space there is very little gravity which is why you float away. The moon's gravitational pull is only 1 fifth of the Earth's gravitational pull.