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   CaliforniaMama  Saturday Jul 9 08:40 AM

July 9, 2011 Frozen air bubbles

From: http://todayilearned.co.uk/



CaliforniaMama  Saturday Jul 9 08:40 AM

Anyone know how bubbles get trapped like that?



ajaccio  Saturday Jul 9 08:52 AM

Quote:
Originally Posted by CaliforniaMama View Post
Anyone know how bubbles get trapped like that?
Don't know your answer, but when I was a kid growing up in New England my parents taught me to look at ice on a pond and see how far down the bubbles went. That would give me an idea of how thick the ice was before I'd decide if I could skate on it or not.

Ponds and such freeze from the surface downward. Even with ice on the top, there is movement of the water underneath. I assume that bubbles get created in the current and get trapped by the ice above which freezes more and more downward.

This is my guess...


Sundae  Saturday Jul 9 09:00 AM

If she cracks she bears, if she bends she breaks
(line from a classic horror story)



classicman  Saturday Jul 9 03:07 PM

Quote:
Originally Posted by Sundae View Post
If she cracks she bears, if she bends she breaks
(line from a classic )
I NEVER SAID THAT! <sulks away>









Sundae  Saturday Jul 9 03:10 PM

Deny away, I know what I know about you and bears.



classicman  Saturday Jul 9 03:12 PM




sandypossum  Saturday Jul 9 11:14 PM

Quote:
f she cracks she bears, if she bends she breaks
(line from a classic horror story)
Being your average Aussie, I know little about ice. My first winter in Holland, when the canal outside our farm froze we walked onto it, and it went CRAAAAACK! I went EEEEEEK! and all the Dutchies went, "oh, that's good. Good ice." I said "fuff that!" (or something like that) and went back inside the house. My Dutch sweetie's father asked me how the ice was and I described it, including the CRAAAAAAACK! and he said ""oh, that's good. Good ice." Yeah, right.

A few years later, still in Holland, we were on a frozen lake - Dutch sweetie on skates, me on a converted sled (wrapped in blankies and carrying the thermos and cake... as I can't skate) and he was pushing me along when it went CRAAAAAACK! in all directions, in a star pattern with me in the middle. He said "oooh, that's not good" and we headed back. So there is CRAAAAAACK! and then there's CRAAAAAACK!

Not all crack is good ice it would seem.


Gravdigr  Monday Jul 11 03:34 AM

CRAAAAAACK kills...



Gravdigr  Monday Jul 11 03:35 AM

That is a crazy pic, CaliMama.



SPUCK  Monday Jul 11 05:52 AM

Quote:
Originally Posted by CaliforniaMama View Post
Anyone know how bubbles get trapped like that?
Fish farts.




Dougie  Monday Jul 11 03:48 PM

how bubbles get trapped like that

Temp get cold. Water freezes and produces 1/2 inch of ice. Bubbles of gas from lake bottom rise and get trapped underneath the ice layer. The next night when it gets cold again, more water freezes and ice becomes thicker forming on the ice above it but not on the bubble except at the edges. The next day, more gas bubbles up getting trapped again. Repeat over many days and night all winter long..



wolf  Monday Jul 11 09:25 PM

Thank you, Dougie. Welcome.



Sundae  Tuesday Jul 12 09:18 AM

Welcome Dougie - clear and concise explantaion.
Although I had to reread it a few times. Bubbles in my brain were making it hard to visualise.



Gravdigr  Tuesday Jul 12 01:41 PM

Get a load of Dougie with the believable explanation.



blueboy56  Tuesday Jul 12 02:18 PM

Another possible explanation is that they are the gaseous diffusions from the GI tract of hibernating furred arctic mannatees. As they slowly digest stored fat, it eventually works its way out and floats to the surface. Some Inuit tribes use it as fuel by drilling a small hole in the top of the ice and lighting it. As the gas burns, it goes down and opens up the underlying bubbles. Really.



Gravdigr  Thursday Jul 14 05:51 PM




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