Question

Why does the size of a bubble increases as it rises towards the surface?

Answer 1

Hey friend
here is your answer
a bubble that is developed under water starts moving toward surface because air is lighter than water.
As is moves towards the surface its size increases because of the reduction in the pressure that surrounds it.

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Answer 2

Due to variations in pressure with the depth the size of a bubble increases as it rises towards the surface.

• At the depth of the pool/aquarium, pressure will be more.
• This high pressure compresses the bubble.
• So the bubble appears to be small.
• At the surface, pressure is less.
• So the bubble expands in size.
• This can be explained in terms of Boyles law also.
• At a given temperature pressure will be inversely proportional to the volume and vice versa.