Rocket ScientistMake a Balloon Rocket

 

StarWhat you need:

  • 1 balloon (round ones will work, but the longer "airship" balloons work best)
  • 1 long piece of kite string (about 10-15 feet long)
  • 1 plastic straw
  • tape

StarWhat do you do?

  1. Tie one end of the string to a chair, door knob, or other support.
  2. Put the other end of the string through the straw.
  3. Pull the string tight and tie it to another support in the room.
  4. Blow up the balloon (but don't tie it) Pinch the end of the balloon and tape it to the straw. You're ready for launch.
  5. Let go and watch the rocket fly! You can experiment to figure out how to make the rocket go farther and faster.

StarHow does it work?

A Balloon Rocket uses air pressure to move forward. The air is forced out of the balloon quickly which creates thrust to move the rocket forward.