Try making several oboes of different lengths... what do you notice?
Here's how kids have voted so far:
42% the sound is higher
26% the sound is deeper
21% the sound is lower
How's it work?
When you cut the straw, the end now has two flaps, or reeds, like an oboe has. Blowing through the straw makes the reeds flab, or vibrate, and this makes the sound you hear. Longer straws make deeper notes, shorter straws make higher ones.
Want to talk about it? Go to the boards and discuss your results with other DFTVer's!
I cut a whole bunch of straws so I could make different notes.