This activity helps demonstrate Bernoulli's Principle and
how changes in air pressure influence lift on an airplane's wing.
Materials
Ping pony ball, funnel (Use a plastic, metal, or glass funnel,
or make your own from a large index card)
Procedure
Lean over with the funnel in your mouth, holding the ping pong
ball inside the funnel. Predict what will happen if you blow hard
through the funnel and let go of the ball at the same time. Try
it and see. Explain the results.
Extension
Challenge students to devise ways to keep a bubble from hitting
the ground, without touching it with their hands or with any others
objects. Think Bernoulli!
