PADI Open Water Diver Final Exam Questions with Correct Answers

PADI Open Water Diver Final Exam Questions with Correct Answers The most efficient way to breathe dense air underwater is to breathe Deeply and slowly Buoyancy A force that pushes an object in water upward Salt water causes more buoyancy than fresh water because it is _____ dense and weighs _____ More When I descend, my buoyancy tends to ________. When I ascend, it tends to _______ Decrease, increase The three most important considerations in choosing scuba equipment are suitability, fit, and Comfort The two basic fin styles are __________ fins Adjustable and full-foot My primary considerations when choosing fins are fit and Blade size BCD (buoyancy control device) Holds your kit together and allows you to adjust buoyancy throughout the dive Regulator Delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the air Cylinder Holds the high-pressure breathing air supplied by your regulator during the dive Weight System Holds lead weight to counteract the positive buoyancy of your body and some of your equipment, with a mechanism for dropping some or all the weight in an emergency The five components that make up a BCD include An inflatable bladder, a cylinder band and harness/jacket, an LPI (low-pressure inflator) mechanism, an overpressure/quick exhaust valves, and a weight system LPI mechanism Inflates the BCD with air from my scuba cylinder Burst disk A safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail Scuba cylinders require pressure testing _______ and visual inspection _________ Every 2-5 years, annually The most important feature in my weight system is its Quick release Trim means having the right _____ of weight Distribution Failure to follow the most important rule in scuba diving can cause serious lung overexpansion injuries, which in turn can cause paralysis and death True An object that is neutrally buoyant in fresh water will _____ in salt water Float Underwater objects appear Larger and/or closer Sound travels about 4 times _____ in water than in air, making it difficult to determine its source Faster To move efficiently as a diver, I should move Slowly and steadily Trim is important for streamlining because Poor trim raises or lowers my feet, causing drag Overexertion results from A prolonged increased effort Buddy Provide Safety Check Begin With Review and Friend BCD, Weight, Releases, Air, Final Check If my buddy and I get separated, the general procedure is to Look for each other for no more than a minute, then reunite on the surface My buddy and I are planning a boat dive with the same type cylinders filled to 200 bar/3000 psi. Due to conditions, we are planning very conservatively. We