Padi Quiz 1 Already Passed

What should you do if you cannot equalize (clear) your ears or sinuses while you are descending (going down)? {Ans: Stop and ascend (go up) a few metres/feet and try to equalize (clear) again.}Imagine a diver is 33 metres/99 feet underwater. The water pressure at this depth would be ______times more than the pressure at the surface. {Ans: Four}What should you do to prevent mask squeeze (a sucking or pulling feeling on your face and eyes)? {Ans: Blow into your mask through your nose.}What can happen to you if you hold your breath while ascending (going up) on a scuba dive? {Ans: Your lungs can over expand which could cause serious injury.}What is the most important feature of a scuba regulator? {Ans: How easy it is to breathe from it.}Imagine you put air into a balloon underwater at 10 metres/33 feet and then you take it to the surface. The air in the balloon will: {Ans: Expand to twice the size as it was at 10 metres/33 feet.}