What You Need:
- A large mug or a small pot
- Ask an adult to help you pour some very hot water into the mug or pot. Stir it slowly in one direction so the water is rotating slowly (you may want to put some food colour in so you can see the movement better).
- Next place a small ice cube at the center of the rotating water.
The ice cube will start to spin faster and faster until it is turning much faster then the water around it. This occurs because the melting ice causes water to sink underneath it. This in turn draws in some of the warm water from the top edges. The water coming in from the edges is what spins the ice cube faster. This is the same principle that causes tornados and whirlpools.