Magic Motor
Materials:
Directions:
Explanation: When you rub your hands together, the friction makes them warmer. Heat always moves from warmer to cooler objects. The air around your hands is cooler than your hands, so the air heats up and rises, because warm air is lighter than cool air. As cooler air takes the warm air's place, a wind is created, and that is what moves the paper. The movement of air or liquid like this is called convection.