This is an impressive but simple experiment for children. We did it with Alex about two years ago, so it was Max's turn now. But this time I added a bit of a twist though. I spread food colouring on the bottom of tea candle, lighted it and placed it at the centre of a plate with water. The good thing about tea candles, they float and that is very useful for this experiment. Then it can be covered with a jar, but we used a vase for the more dramatic result. The bigger is the jar the more water is sucked into it.
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