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Balloon rockets are an excellent way to demonstrate how a real rocket works! How do you think balloon rockets and real rockets are alike? Read along and follow the instructions and you will find out!
Balloon, string, straw, and tape
Use all of the materials to come up with a rocket of your own!
Does your balloon rocket look like this?
Did you thread the string through the straw? Tape the tape to the balloon? Stretch the string between to people?
Are you having trouble? Watch this video!
Balloon Rocket - An Easy Science Project For Kids To Understand Newton's Law With Fun
How does this rocket balloon relate to real rockets?
When the balloon pushes the air out, the air pushes right back on the balloon with an equal and opposite force. The air goes back, the balloon goes forward. The more air there is inside the balloon, the longer it will be able to push with that force, and the more motion the rocket will get. The amount of motion you get for a given force depends on the mass of the object. The more massive the object, the less motion it will end up with.