A swimmer cannot snorkel more than a meter deep because air
A)in the lungs cannot easily be expelled.
B)tends to liquefy in the snorkel tube.
C)is buoyed up leaving the swimmer breathless.
D)at the surface will not freely enter the higher-pressure region in the compressed lungs.
E)all of the above

Question

Quizplus · Accepted Answer

When a swimmer inhales air at the surface, it enters their lungs at normal atmospheric pressure. As the swimmer descends, the pressure increases, making it more difficult for air to enter the lungs. At a depth of one meter, the pressure is not high enough to prevent the swimmer from inhaling, but if they go any deeper, the air in the snorkel tube will not freely enter the higher-pressure region in the compressed lungs, making it impossible to breathe. This is because the air in the snorkel tube is at atmospheric pressure and cannot overcome the pressure of the water at depth.

A Swimmer Cannot Snorkel More Than a Meter Deep Because