Experiement: Funnel Blow Out

 Most people can blow out a cake-full of candles with a single breath. Blowing out a single candle is even easier, right? The next time someone has a birthday, try this experiment.

What you need:                                                                                

  • A plastic funnel
  • A birthday candle (or a regular candle) in a candle holder

What to do:

  1. Have an adult light the candle.
  2. Hold the funnel over the candle and blow through the small end.
  3. Now, reverse the funnel and blow through the wide end aiming the small end at the candle.

The Science:

Blowing into the narrow end of the funnel forces your breath to spread out along the edges of the funnel walls. Hardly any air gets directly to the flame. When you turn the funnel in the other direction, your breath goes straight to the candle flame, cooling it off and snuffing it out.





54 Responses to Experiement: Funnel Blow Out

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