Oobleck Dances on a Speaker

Oobleck forms moving fingers/blobs. Ask students to predict what will happen. Drive low-frequency sound under a thin oobleck layer. Key idea: Rapid vibration repeatedly jams and unjams the shear-thickening suspension. Ask: Why does sound make a liquid stand up? Safety and cleanup: Protect speaker; goggles; do not pour oobleck down sink. https://www.google.com/search?q=%22Oobleck+Dances+on+a+Speaker%22+science+demonstration+experiment