Connect two PET bottles with the Tornado Tube and create a exciting tornado!
Fill a PET bottle with water and screw on the tornado tube add the other bottle and then spin the bottle with a circular movements. The water will flow very slowly, maybe it will not flow at all. When you spin the water in the upper bottle, a tornado is formed and the water flows very quickly. Create extra effect by using coloured water. The tornado inspires discussions about everything from energy conversions to liquid pressure.