Making sugar granules dance!

This simple experiment making sugar granules dance using vibrations from sound waves was so much fun to do with my 4yo. I told him that he could make sugar granules dance by speaking loudly at them and he was very eager to give it a go. We used a balloon cut down the middle, a glass, an elastic band and some granulated sugar. We stretched the balloon over the rim of the glass so that it was taut and held it in place with an elastic band. Then put some sugar granules on top.

Next came the fun part – speaking loudly at the sugar granules! And they dutifully danced! My son was amazed.

The science behind it…

Sound waves hitting the rubber cause it to vibrate which make the sugar granules move up and down. The louder the sound, the greater the vibration and the more they dance!


Hi! I’m Claire, stay-at-home-mum to two gorgeous boys and a lovely girl. My kids are energetic, spirited and full-of-life, and they certainly keep me on my toes. I love spending time with them and seeing them learn and experience new things – I hope that this blog will give you ideas to try out on the children in your life!

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