Use a Balloon to Amplify Sound
Small sounds can still make a loud 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(s)
Instructions:
- Blow up the balloon.
- Hold the balloon close to you ear while you or someone else 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.
1 comments:
Hi Shannon!
My name is Rachel and I am running the Winter Learning Journey programme this holiday. We are having a great time blogging and I really hope that you will consider joining us. It's really easy and fun :)
To join, all you have to do is log onto the Winter Learning website, click on the "Weekly Activities" tab, scroll down and choose an activity that interests you. You then blog about it on your blog site and I will read it, comment and give you points. You'll earn a certificate and a badge and, if you one of the 'Top 3 bloggers' you will also earn a great prize at the end of the holiday!
I'll check back in a couple of days to see if you've chosen to take up the challenge and join the Winter Learning Journey programme.
Hope to see you online this holiday :)
Cheers, Rachel
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