Steve Spangler Science: Balloon-Powered Car

Air pressure powers a homemade racer across the floor.

When it comes to powering a race car, there are a lot of options. Some cars use gasoline, diesel fuel, rocket fuel, or other combustible material. Some have used solar power to charge batteries. You can power a miniature race car with a rubber band or a mousetrap. In the Balloon-Powered Car, we’ll show you how to build your own racer and then use air pressure to zip it across a surface.


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