PADI Open Water Exam Question and Answers(100%Correct)

PADI Open Water Exam Question and Answers(100%Correct) .1/2 - ANSWER-how long does my air supply last at 10 meters/33 feet than at surface? .1/3 - ANSWER-how long does my air supply last at 20 meters/66 feet than at surface? .12 - ANSWER-how many hours should you wait to fly after a single dive? .15 minute to 12 hours - ANSWER-how long after diving will decompression sickness start to show symptoms .18 - ANSWER-how many hours should you wait to fly after a repetitive dive? .18 meters/ 60 feet per minute - ANSWER-ascend no faster than .20x faster - ANSWER-water absorbs more heat than air .79% nitrogen and 21% oxygen - ANSWER-what components make up air .active interactions - ANSWER-those that affect aquatic life directly, by altering their normal behaviors: feeding, hunting, touching, moving, chasing, scaring, etc. .adjustable strap fins - ANSWER-open at the heel and straps hold them in place .airway control - ANSWER-the kill of breathing past this remaining water without drawing any into your throat .alcohol and tobacco - ANSWER-two common substances i should refrain from using before diving, as they accelerate heat loss .alpha flag - ANSWER-indicates that the vessel flying it has divers in the water and can't maneuver .alternate air source - ANSWER-an extra second stage you use for sharing air with a buddy should the need arise .alternate inflator regulator - ANSWER-combines a second stage with your BCD low-pressure inflator .as often as you can - ANSWER-when should you equalize? .BCD (buoyancy control device) - ANSWER-holds the kit together and allows you to adjust buoyancy throughout the dive .bcd and weight system - ANSWER-what two pieces of equipment do I normally use to control buoyancy? .BCD, regulator, cylinder, weight system - ANSWER-the four equipment systems coming to make a scuba kit .bezel with index marks - ANSWER-rotates so you can align two, small parallel marks over the north needle .breathe continuously and never hold your breath - ANSWER-the most important rule of scuba diving .buddy system - ANSWER-diving with another diver or divers in a team that provides shared assistance and safety benefits .chest expands when inhaling (increasing water displacement) - ANSWER-how does breathing affect your buoyancy? .cylinder - ANSWER-an aluminum or steel alloy container made specifically for storing high pressure air .cylinder alloy - ANSWER-typically a code number .cylinder valve - ANSWER-controls air flow to and from the cylinder .decompression sickness - ANSWER-when you ascend without taking safety stops, you may have too much nitrogen in your body which can cause nitrogen bubbles to form within your blood and body tissues .decompression stop - ANSWER-a stop in your ascent that is required because you exceeded the no stop limits .deep, slow breaths - ANSWER-what type of breaths should you take when trying to efficiently breathe dense air underwater? .depth and time - ANSWER-two primary factors that influence how much nitrogen you absorb during a dive .dive computers and tables - ANSWER-use dive time and depth information to calculate the theoretical amount of nitrogen in your body .dive knife, dive tool, shears, z-knives - ANSWER-4 types of cursing tools .dive planning software - ANSWER-estimates how long your air supply will last on a dive and also tells you the estimated time your dive computer will allow on a dive, based on how much nitrogen your body has absorbed .dive within limits - ANSWER-you do not exceed the limits of your training and/or experience .dry suits - ANSWER-provide the most insulation; have watertight zippers and seals, and most types cover your entire body; better for cooler water dives .ear squeeze - ANSWER-pressure pushing your eardrum and surrounding tissues inward .ears and sinuses - ANSWER-to equalize ______ ______ __________: pinch your nose and blow gently against it .ears, sinuses, mask - ANSWER-three major body air spaces that increasing pressure affects .enriched nitrogen air - ANSWER-has the same components as normal air, but with 22% or more of oxygen .equalization - ANSWER-keeping the pressure equal with outside pressure, so people stay at their normal volume .faster - ANSWER-sound travels 4 times _______ in water than in air .first stage - ANSWER-supplies air to all the other components; connects to cylinder .full foot fins - ANSWER-enclose the heel and fit like snug shoes or slippers .gas narcosis - ANSWER-nitrogen and oxygen can cause an intoxicating effect under pressure, which impairs good judgment .gently - ANSWER-how should you equalize? .give emergency oxygen - ANSWER-if a diver is suspected to be breathing contaminated air, you should ________ ____________ _________ .in control - ANSWER-not panicking .inflatable bladder, cylinder band and harness jacket, LPI, overpressure valves, weight system - ANSWER-the five components that make up a BCD .larger, closer (magnifies about 1/3) - ANSWER-light reflation underwater causes objects to be