Here's what you need to make your 4-Wheel Balloon Car!
Jet
Body (Select one)
Axles (Select one)
Wheels (Select one)
Connector for attaching wheels to an axle (Select one)
Make the jet
Put the long end of a flexible straw into a balloon.
Make the jet (cont'd)
Attach the straw and balloon so that no air can escape, using either a rubber band or tape.
Insert two axles
Make the wheels
Wedge a square of sponge (or foam or marshmallow) into a bottle cap to make a wheel.
Make the wheels (cont'd)
Make four of these wheels.
Add wheels
Insert the jet
Power the jet
Did you know?
Your balloon car uses jet power to move. The stored air in the balloon pushes through the straw, creating thrust—the force that pushes the car forward. So when air from the balloon moves in one direction, it pushes the car in the opposite direction.
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