How does a drinking straw work?

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Offline thedoc

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How does a drinking straw work?
« on: 30/10/2013 20:38:30 »
When you sip a beverage through a straw, what exactly is going on inside your mouth to create the suction strong enough to bring up the liquid?
I know it doesnt have anything to do with breathing, because i could breathe just fine when i used the straw (ha ha no i didn't inhale the pop). It just seems so natural, I never really considered just how it works...
Asked by abby


                                        Visit the webpage for the podcast in which this question is answered.

[chapter podcast=2913 track=10.11.28/Naked_Scientists_Show_10.11.28_7580.mp3]  ...or Listen to the Answer[/chapter] or [download as MP3]

« Last Edit: 30/10/2013 20:38:30 by _system »

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SteveFish

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What happens in your mouth when you use a straw?
« Reply #1 on: 27/11/2010 17:51:14 »
With your lips closed around the straw you lower your tongue and open your jaw a little to reduce the pressure in your mouth. Just do it and pay close attention. The liquid is forced up the straw into your mouth because the air pressure on the surface of the liquid in a glass is now greater than that in your mouth.

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noxy moyo

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« Reply #2 on: 07/06/2015 18:30:56 »
that was a pleasing answer indeed..it really helped me..........thank you very much