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Monday, 20 June 2016

Use a Balloon to Amplify Sound


Use a Balloon to Amplify Sound
Small sounds can still make a big noise when you use a good sound conductor. Experiment with a balloon, compressed air and your own ears to find out how it works and the science behind it.




What you'll need:
  • Balloon
Instructions:
  1. Blow up the balloon.
  2. Hold the balloon close to your ear while you tap lightly on the other side.
What's happening?
Despite you only tapping lightly on the balloon your ears can hear the noise loudly. When you blew up the balloon you forced the air molecules inside the balloon closer to each other. Because the air molecules inside the balloon are closer together, they become a better conductor of sound waves than the ordinary air around you.



Today we did an experiment on a balloon and we blowed it up then we put it on people's ears then we taped it on the other side then tried to make a beat.

I was very fun because we learnt lots of new things.

Image result for balloons

1 comments:

Danni Stone said...

Hi Alfred, I found it really interesting to learn that balloons can amplify sound! Do you think you will share this experiment the next time you are at a birthday party or blow up a balloon?

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