The next KCFS project for our Grade 4 students is Designing a High Flying Rocket. It is not easy to make a rocket fly high! In this experiment, you are going to find out about the special force that keeps us on the ground.

What to Do

　Go out into your garden or to the park. Take some friends and a grown-up with you. Ask your friends to see who can jump the highest.  Maybe ask the grown-up too! To help you jump higher, crouch down by bending your knees, swing your arms up, and push yourself off the ground as hard as you can. 

How It Works - Let Us Take a Closer Look!

　When you jump into the air all the muscles in your body have to work hard to push you up. They have to work hard because there is an invisible force called gravity that is pulling you towards the ground. The stronger your muscles are, the higher you will be able to jump, but you will always fall back to the Earth. To fly high, a rocket’s muscles are the very powerful engines that it needs to push against Earth’s gravity. If a rocket’s engines are powerful enough, it can even go all the way to space!