PADI Open Water Dive Exam questions with correct answers 2023

PADI Open Water Dive ExamAn object is positively buoyant when: - correct answer It displaces a volume of water weighing more than its own weight. What two pieces of equipment do you use to control your buoyancy? - correct answer BCD, Lead Weights Buoyancy control is one of the most important skills you can master because it allows you to control where you are in the water. (T/F) - correct answer True An object will be more buoyant in _____ than it would be in _______. - correct answer Salt Water, Fresh Water When you exhale, your lung volume decreases. This means you have _____ buoyancy. (more or less) - correct answer Less You usually feel pressure only in body air spaces because: - correct answer Your body is mostly made of incompressible liquid, but air is compressible and changes volume with pressure changes. Pressure changes inw ater for a given ascent or descent are much more substantial than the same distance ascent or descent in air because water weighs more (T/F) - correct answer True The three major air spaces affected by pressure when you descend are: - correct answer Mask, Ears, and sinuses A Squeeze is - correct answer A pressure imbalance in which pressure outside an air space exceeds pressure inside an air space, resulting in pain or discomfort Equalization is adding air to an air space as you descend so the pressure in an air space equals the surrounding water pressure (T/F) - correct answer True Which are techniques for equalizing your ears? - correct answer Pinch your nose and blow gently against it, swallow and wiggle your jaw from side to side You want to equalize your ears? - correct answer Every metre/few feet before you feel discomfort If you feel discomfort and can't equalize, ascend until you relieve the discomfort and try again. Don't be forceful in equalizing. If you can't equalize, discontinue dive. (T/F) - correct answer True The most important rule in scuba diving is: Breathe continuously and never hold your breath (T/F) - correct answer True Ascending while holding your breath: - correct answer Can cause lung overexpansion injuries Can cause serious injuries, including paralysis and death causes injuries that are easy to avoid by not holding your breath A reverse block is: - correct answer Pain and discomfort caused by expanding air trapped inside an air space during ascent. If you feel discomfort during ascent due to a reverse block, you should: - correct answer slow or stop your ascent and give the trapped air time to work its way out. As you go deeper, you consume air from your scuba cylinder _____. - correct answer Faster The most efficient method for breathing underwater is rapid and shallow. (T/F) - correct answer False You need a mask to see underwater because - correct answer The human eye can't focus underwater A mask needs to enclose your nose: - correct answer so you can equalize the mask