G3 Gravity_03

Earth’s Gravity 

You already know some about gravity. It is the force that holds you down. What might happen if there was no gravity? 

You know that the Earth is rotating on its axis. This motion causes our day and night cycle. The Earth also orbits the Sun. All this motion may cause you to fly off the Earth. You can thank gravity for keeping you in place. 

Gravity holds us on Earth. Gravity also pulls on objects that are in the sky. It also pulls on objects that are in space. Meteors and skydivers are pulled down by gravity. Gravity also keeps the moon orbiting the Earth. Without gravity, the moon would float away. 

Gravity also holds artificial satellites in their orbit. Many of these satellites help to connect the world. They allow you to make a phone a call to almost anywhere. Did you watch TV last night? If so, you can thank gravity.  Gravity also keeps the planets orbiting the Sun.