Balloon Rocket

THIS PROJECT IS BROUGHT TO YOU BY SCIENCEBOB.COM


MATERIALS YOU'LL 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


DIRECTIONS

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 the balloon to the straw as shown above.


5. You’re ready for launch.


6. Let go and watch the rocket fly!


MAKE IT AN EXPERIMENT

The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions:

1. Does the shape of the balloon affect how far (or fast) the rocket travels? 2. Does the length of the straw affect how far (or fast) the rocket travels? 3. Does the type of string affect how far (or fast) the rocket travels? (try fishing line, nylon string, cotton string, etc.) 4. Does the angle of the string affect how far (or fast) the rocket travels?


Thanks Science Bob for a great experiment for us to try!



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