Experiment 49 from We Are Teachers - 75 Easy Science Experiments

49. Levitate a Ping-Pong ball

Attach a bendy straw to a plastic bottle, squeeze the bottle to blow air upward, and place a Ping-Pong ball above the straw so it lifts and floats. When you blow air through the straw, the fast-moving air creates an area of lower pressure above the Ping-Pong ball. The higher air pressure around the ball pushes it upward, making it float or “levitate.” This demonstrates Bernoulli’s principle: faster-moving air has lower pressure.