Vortex Cannon Puff

A puff travels far and knocks objects over. Ask students to predict what will happen. Tap the diaphragm toward tissue or light cups. Key idea: The opening forms a ring-shaped vortex carrying momentum. Ask: Can moving air have a shape? Safety and cleanup: Never aim at faces. https://www.physics.wisc.edu/outreach/wonders-of-physics-outreach-fellows/activities/vortex-cannon/