Ask questions about projects relating to: aerodynamics or hydrodynamics, astronomy, chemistry, electricity, electronics, physics, or engineering.
Moderators: MelissaB, kgudger, Ray Trent, Moderators
Can the blowing bottletops experiment be modified and used to prove that the length, thickness or flexibility of the vocal cords can effect the pitch of singing? Are vocal cords examples of closed end air columns?
- Posts: 1
- Joined: Wed Nov 28, 2012 7:43 pm
- Occupation: student
- Project Question: Can the blowing bottletops experiment be used to prove that different vocal cord legnths, thicknesss or elasticity can produce different pitches? Are vocal cords similar to closed end air columns?
- Project Due Date: 12/12/12, initial draft is due. Science fair is in february 2013
- Project Status: I am just starting
I don't see any immediately obvious correlation between an open air column and vocal cords. Vocal cords work much more like how a wind instrument works, by have the parts of the vocal cords vibrate against each other alternately allowing air through and building up pressure for the next cycle. A kazoo or air blown over a rubber band on a cup would be a much closer experiment.
Unfortunately, I can't find an experiment here on Science Buddies about the rubber band experiment. There is one here: http://www.challengerlearningcenter.com ... eSound.pdf
that seems to be similar to what you're looking for.
- Posts: 214
- Joined: Wed Aug 24, 2005 3:07 pm
Return to Grades 6-8: Physical Science
Who is online
Users browsing this forum: klo and 2 guests