Convection currents
Click the start button to make the convection curler move. As the hot air rises, the cool air rushes in underneath to fill the space.
As the cool air warms up, it also rises, and air currents are created. The currents make the convection curler turn.
You can see these currents working in your home. Tear a strip of thin paper such as tissue paper, and hold it above a warm radiator. As the warm air currents rise, the paper will flap up and down.
A similar effect can be seen in water with the convection carp experiment.
If you can’t see the activity on this page, please click here to see a description.
