The Super Sounds Posted: 21st October, 2010 by the Scientific Group Tags: sound, travels What we wanted to find out: we wanted to investigate how sound travels through materials. Sounds go through some materials better than others. Some louder sounds can damage our ears. Small sounds can not damage our ears. What we used: we put materials into a tube (cotton wool, tin foil, cotton, plastic bag, paper). We measured the sound in (dB) by ringing a bell into the tube. We measured the sound with a sound sensor and here are our results. 
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Interesting results and a good blog post describing your experiment – good job!
This is really good work! I wonder what causes some of them to be loud and some quiet? And why paper was the loudest?
Keep up the excellent work!
This is just an excellent way to display your Science learning. I’d love to know more about what the results told you? Keep up the good work! Keep blogging.
Mr. Mitchell
Did you scrumple the paper and foil up? Your results are very interesting and the tin foil one is quite surprising. Is the tin foil really made of tin?
I’m being a bit cheeky here but what does DB stand for please?
It’s nice to see people trying out a new experiment and reporting it like this. What was the tube made from? It looks like a good experiment to try with my classes too
Brilliant experiment! My research involves sound and I carry out experiments very similar to this using different materials
Yes, good presentation of your results – very colourful! Did you do a test with the tube empty (well, containing air, that is!). How did you put ‘the cotton’ in…cotton reels, or??
Was the tube you used to put things in waterproof? Could you have tried putting water in it to find out about how well water might work, or would it have all run out? How might you keep water in the tube without the water running out or making the tube soggy? If the weather has been as cold where you live as it has where I live, you might have got ‘solid water’ if you’d left the tube outside! Do you think it would make any difference to your results if the water was liquid or ‘solid’?
Hi, what a great experiment, and well documented so its easy for people to follow and repeat. My only slight critcism (science geek alert!) is the axis on the graph isn’t labelled, I presume the y axis is the sound measured in dB? Also, any ideas why some of the materials were more sound insulating than the others? Lots of good follow up experiments could be done on this, great job from everyone involved, so glad to see it blogged too!