There are a number of good ideas about 'Sound' on the following website:
http://homepage.eircom.net/~kogrange/sound_index.html
This information was provided by the children and teacher of a national school in Ireland
To make some weird sounds have a look at 'Sound experiments' on:
http://www.hunkinsexperiments.com/themes/
To see how to make a 'Shoebox Guitar' from a shoebox and rubber bands, have a look at:
There are many more ways to do extra research on Sound and Science. Below are some ideas:
Your local library could help you find out more about the Irish scientist Robert Boyle. What else did he discover?
Also asking your local librarian will help you find even more information and may even provide you with images, media publications and better insight into the world of Science.
Being able to find things out on your own is just as much fun so here are a few tips on how to do research