Purpose: To illustrate convection in gases.

1. Dual chimney system. Light the candle inside the box and close the glass cover. Light a piece of touch paper and hold it near the top of the chimney that has no candle beneath it. Smoke will be forced down that chimney and up the one above the candle.
2. Angel Chimes. This dining-table centerpiece operates by convection and gives a tinkling sound while operating. Note: Even a slight air movement through the room will prevent proper operation.

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