Space Week: STEM Activity

Materials Needed: 

Balloons (long, cylindrical ones work best) 

String (about 10-15 feet long) 

Tape 

Straw 

Scissors 

A large open space (indoors or outdoors) 

Instructions: 

1. Set Up the String: 

Cut a piece of string about 10-15 feet long. Tie one end of the string to a stationary object, like a chair or doorknob. Make sure the string is taut. 

2. Thread the Straw: 

Thread a straw onto the string. This straw will act as the guide for your balloon rocket. 

3. Prepare the Balloon: 

Inflate a balloon but do not tie the end. Pinch the end to keep the air inside. 

4. Attach the Balloon to the Straw: 

Tape the balloon to the straw. Make sure the balloon is parallel to the string. 

5. Launch the Rocket: 

Let go of the balloon and watch it zoom along the string! The air escaping from the balloon creates thrust, propelling the balloon forward. 

 

Experiment with Variables: 

Try using different sizes and shapes of balloons. Observe how the size and shape affect the speed and distance of the balloon rocket. 

Enjoy exploring the principles of thrust and motion with your balloon rocket! 🚀🎈