A ball stably levitated on an invisible stream of air is a dramatic sight. When you try to pull the ball out of the airstream, you can feel a force pulling it back in. You can also feel that the airstream is being deflected by the ball. This Snack shows one of the forces that give airplanes lift. Follow instructions closely! The experiments in The Exploratorium Snacks Online were designed with safety and success in mind. But even the simplest activity or the most common materials can be harmful when mishandled or misused. Use common sense whenever you're exploring or experimenting.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, Kindergarten
General Science, Physical Sciences, Space Sciences, Technology
General public, Students, Teachers