#FunFriday – experiment with sound

This weeks #FunFriday experiment is a simple and easy way to teach children how sound moves in air.

What you will need:

  • An empty plastic bottle
  • Scissors
  • A piece of plastic (cut from a plastic bag or equivalent)
  • An elastic band or tape
  • Small candles
  • Matches

(Adult assistance required!)

Just follow the steps in the video… and the “big kids” among you might like the second half of the video… where I scale things up a little!

So what is happening?

When you tap the plastic it acts like a drum.  The sound waves it creates make the air molecules vibrate.  These vibrating molecules then make the molecules beside them vibrate.  The vibrations travel through the air in the bottle and blow out the flame.

Hope you enjoy this one… if you like it please share it and if you have any comments or questions I’d love to hear from you!