Beer, agitation, and foam...

Why is it that a carbonated beverage will fizz more violently after having been shaken or having suffered impact?

 

Hi thingmaker,

Here is a brief explanation of Carbonated liquid behaviour when shaken.

I cheated and googled the subject.

hgmjr

 

Thank you! I had obviously used inadequate search terms.

 

i was thinking on the same lines, but mr hgmjr's posted link explains it better.
thanks to mr thingmaker i also learned about the mentos effect.

 

Whilst browsing round the net looking into this subject I came across this image!

Apologies for the digression.

Dave