In this project, students will build balloon-powered rockets and race them on a string track. By experimenting with different balloon sizes and shapes, they can learn how propulsion works and how it relates to Newton's third law.
If a larger balloon is used, then the rocket will travel faster and further due to increased air propulsion.
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Thread a long piece of string through a straw.
Attach the string between two static points like chairs.
Inflate a balloon and hold the end without tying it.
Tape the inflated balloon to the straw.
Release the balloon and let it propel along the string.
Measure the distance traveled by the balloon rocket.
Repeat with different sizes and shapes of balloons.
Record the time taken for each balloon to travel a fixed distance.
Compare the distances and times for each balloon setup.
Analyze which setup traveled the furthest and fastest.
Clean up materials after the experiment.
Larger balloons are expected to travel further and faster due to higher propulsion forces as they release more air. The experiment will illustrate Newton's third law of motion.
Size and shape of the balloon
Distance traveled by the balloon
String length, Track angle, Air pressure conditions
Be cautious when inflating balloons to prevent them from bursting and protect eyes.
Explain how Newton's third law relates to the rocket's movement.
Demonstrate using various balloon sizes and discuss their effects.
Show a video of the experiment to illustrate the propulsion.
