Bernoulli’s Principle: an increased speed of moving fluid (or air) results in a lower air pressure.


Materials: A funnel and a ping pong ball


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Place a ping pong ball inside a funnel. Stick the funnel between your lips, point your nose to the ceiling, and try as hard as you can to blow the ball out of the funnel.


What’s going on? The air travels further to get around the ball, so the air speed increases. The curved surface of the ball increases the airflow past the ball, which drops the pressure. As higher pressure always pushes, the ball will remain in the funnel the harder you blow.



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Comments

3 Responses to “Bernoulli’s Principle”

  1. Then you’d be a vacuum. And not using Bernoulli’s principle.

  2. Lydia Fancher says:

    hmm… what if I suck in air?

  3. This is Noah. I am 7. I decided to put the ball in a bigger funnel and blow across the top. The ball bounced and flew in the funnel. It was cool to see it work that way.