In this video, Brian introduces you to some fun science activities you can build to learn about the Bernoulli Principle.
Bernoulli's principle states that as the speed of air increases, the pressure of that air decreases. In these activities, a current of fast moving air is created around and above the ball. This results in a low-pressure zone below the ball relative to its surroundings. Higher pressure air from around the ball pushes the ball.
For more great free activities like The Bernoulli Challenge, and how to build different kinds of air cannons, explore Science World Resources.