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A question about bubbles.

H

HappyPuppy

Lifer
When an air bubble is created at a depth of 1000 feet (under water) does it accelerate as it rises to the surface? Obviously it would reach a point where friction would prohibit any further acceleration, if in fact it ever does accelerate.

Does the bubble rise faster at greater depths due to the higher pressure and slow down as the pressure decreases at lesser depths and pressures?

How much would a one inch diameter bubble, created at a depth of 1000 feet, expand to by the time it is just below the surface of the water?

Inquiring minds want to know. 😀
 
Actually I'm somewhat interested in the answer to this myself just because it's interesting. Someone around here must know the answer.
 
Exactly. The question, or thought, popped into my mind while watching the bubbles rise in my beer. 😀

Maybe one of the divers would know the answer.

Oh, I don't know if an air bubble can be created at 1000 feet or not, it was just a random depth.
 
Sure a bubble could be created at 1000 ft. A diver could do it when he/she exhales (though I'm not sure even saturation divers dive to 1000 feet, you'd need a special dive suit). From my [amateur] observations under water (I dive alot) bubbles will accelerate a little as they expand. However, due to the friction and any other forces, one large bubble will end up breaking into many smaller bubbles before it's able to accomplish some sort of super-bubble status.
 
Originally posted by: Gooberlx2
Sure a bubble could be created at 1000 ft. A diver could do it when he/she exhales (though I'm not sure even saturation divers dive to 1000 feet, you'd need a special dive suit). From my [amateur] observations under water (I dive alot) bubbles will accelerate a little as they expand. However, due to the friction and any other forces, one large bubble will end up breaking into many smaller bubbles before it's able to accomplish some sort of super-bubble status.
Click to expand...



I wonder what the percent volume change of the bubble would be,if it didn't break up, between 1000 feet and the surface.
 
pressure increases by 1atm every 33 ft in water. I'm no physicist, so I dunno if a direct correlation between pressure and volume is accurate....however it would be my theory that a bubble made at 1000 ft. would expand to ~30.3X its original size at the surface.

1000ft / 33 ft (per atm) = ~30.3

Does this make sense....any physics majors around?
 
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