Kids Science Activities
Balloon as a Sound Amplifier
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Materials Required
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* Balloon
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Method
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- Blow a balloon hard and tap it lightly near your ears.
- Hear the sound and compare the lightness of the action with the sound produced.
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What is Learnt
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As the air molecules get closer and well packed inside the balloon they turn into a better conductor of sound than ordinary air and contribute to producing louder sounds.
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Conclusion
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* Even light tapping produces a loud sound to the ear.
* When air is blown in it forces air molecules closer together that produces a loud sound.
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| Comments on this article |
| Lydia, Ooty | Thursday, November 10, 2011 |
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| Pictures with sound effect would be better. |
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| s revathy, coimbatore | Monday, August 29, 2011 |
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| I FEEL THAT A STEP BY STEP PICTURE INSTRUTION WOULD BE BETTER FOR THE CHILDREN |
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