The flying tea bag experiment is a heat experiment which looks like a really interesting trick.
Only an adult should light the match, and the tea bag should be lit on a metal or glass plate (because sometimes it falls over before it flies into the air).
As the flame burns is heats the air inside the hollow centre of the tea bag.
As the air gets hotter the molecules become less dense and move around.
The less dense warmer air rises above the more dense cooler air around the tea bag.
Since the tea bag is so light it rises with it and appears to fly.
This was a fun way for us to see how heat effects air molecules.