Objective:
– To illustrate convection currents.
Apparatus:
- Glass container with two chimneys
- Tea Light Candle (fresh one only!), Lab Jack
- Braided string, matches
Method:
If a candle is lit under one chimney and a smoking string is held over the other chimney, the smoke will be drawn down the cold chimney by the warm air moving up the hot chimney.
Note:
Do not let the smoking string rest against the chimney walls, as the heat melts the plastic chimneys.
Please use fresh tea light candle each time it is set up.