Question

Explain why a gas bubble released at the bottom of a lake grows in size as it rise to the surface of lake.?

Answer 1

This is beacuse there is more pressure at the bottom of lake than its surface.

Answer 2

This is because the pressure gradient the more deep anything moves inside a fluid the more is the pressure, this is because all above fluids exert a force in onto the inside layer of fluid.. here the bubbles travels upwards thus by that it's pressure decreases and keeping the force of bouyancy constant the bubbles size increases..