60 Second Science: Make a Wish and Blow Hard!

microphone

Explore the weird and wonderful properties of air with this experiment!

What you will need:

birthday candle

modeling clay

small funnel

Place the candle in a grape sized piece of modeling clay. Light the candle. Blow it out. Easy, right? Light the candle again and place the small end of the funnel into your mouth. Try to blow the candle out with the funnel (be careful not to let the funnel touch the flame!).

What happens? Air tends to follow the shape of a surface so very little air moves in the center of the funnel. The moving air along the edges of the funnel creates low pressure in the center. Air from the other side of the candle rushes in to fill the space created by the low pressure and causes the flame to actually move towards you as you blow.

 

 

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