PADI Open Water Diver Final Exam with 100% Correct Answers 2023

PADI Open Water Diver Final Exam with 100% Correct Answers 2023 As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as - Correct Answer-18 metres/60 feet As you descend in water, the pressure - Correct Answer-increases A depth change of 10 metres/33 feet causes a pressure change of - Correct Answer-1 bar/ata (atmosphere) if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - Correct Answer-2 litres (the density of the air would be three times the density at the surface) A balloon fully inflated and sealed at 10 metres/33 feet, would probably ______ during ascent to the surface - Correct Answer-burst A squeeze is caused by - Correct Answer-a pressure imbalance between the surrounding pressure and an air space Equalization is the process of - Correct Answer-adding air to an air space The most important rule in scuba diving is to - Correct Answer-breathe continuously and never hold your breath During ascent I feel discomfort in my ears. I should - Correct Answer-stop, descend slightly, and allow trapped air to work its way out My buddy and I descend to 12 metres/40 feet. I would expect to use my air _____ at 6 metres/20 feet - Correct Answer-faster than The most efficient way to breathe dense air underwater is to breathe - Correct Answerdeeply and slowly Buoyancy - Correct Answer-a force that pushes an object in water upward Salt water causes more buoyancy than fresh water because it is _____ dense and weighs _____ - Correct Answer-more When I descend, my buoyancy tends to ________. When I ascend, it tends to _______ - Correct Answer-decrease, increase The three most important considerations in choosing scuba equipment are suitability, fit, and - Correct Answer-comfort The two basic fin styles are __________ fins - Correct Answer-adjustable and full-foot My primary considerations when choosing fins are fit and - Correct Answer-blade size BCD (buoyancy control device) - Correct Answer-holds your kit together and allows you to adjust buoyancy throughout the dive Regulator - Correct Answer-delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the air Cylinder - Correct Answer-holds the high-pressure breathing air supplied by your regulator during the dive Weight System - Correct Answer-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 - Correct Answer-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 - Correct Answer-inflates the BCD with air from my scuba cylinder Burst disk - Correct Answer-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 _________ - Correct Answer-every 2-5 years, annually The most important feature in my weight system is its - Correct Answer-quick release Trim means having the right _____ of weight - Correct Answer-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 - Correct Answertrue An object that is neutrally bouyant in fresh water will _____ in salt water - Correct Answer-float Underwater objects appear - Correct Answer-larger and/or closer Sound travels about 4 times _____ in water than in air, making it difficult to determine its source - Correct Answer-faster To move efficiently as a diver, I should move - Correct Answer-slowly and steadily Trim is important for streamlining because - Correct Answer-poor trim raises or lowers my feet, causing drag Overexertion results from - Correct Answer-a prolonged increased effort Buddy Predive Safety Check - Correct Answer-Begin With Review And Friend BCD, Weight, Releases, Air, Final Check If my buddy and I get separated, the general procedure is to - Correct Answer-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 agree on 60 bar/800 psi for our reserve. We agree that we also want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when either of our SPGs reads - Correct Answer-90 bar/1300 psi My buddy and I have just started our descent. I begin equalizing - Correct Answerimmediately, as soon as my head goes underwater During my descent, to control my buoyancy I add air to my BCD - Correct Answer-in small amounts, frequently To start my ascent, I should - Correct Answer-swim up gently To control my buoyancy while ascending, I should - Correct Answer-vent my BCD with in small amounts frequently A safety stop is a stop between ______ and ______ for three to five minutes - Correct Answer-6 m/20 ft, 3 m/10 ft When I reach the surface, the first thing I do is _______ - Correct Answer-inflate my BCD Wet suit - Correct Answer-most common exposure suits; provide insulation and protection; made with neoprene; doesn't keep you dry Dry suit - Correct Answer-provide the most insulation; keeps you dry with special watertight zippers and seals; most effective option for cooler water diving Skin suit - Correct Answer-aka body suits; provide little or no insulation; worn in warmer water for protection from minor cuts, scrapes, stings, and sunburn Which type of exposure suit requires special training? - Correct Answer-dry suit Which type of exposure suit requires a snug fit, without which water would carry away heat or it would be uncomfortable? - Correct Answer-wet suit A hood is important when diving in water cooler than approximately - Correct Answer-21 degrees Celsius/ 70 degrees Fahrenheit Which cutting tool is a bladed hook for cutting fishing line or net? - Correct Answer-zknife What are three primary instruments I would normally have while diving? - Correct Answer-SPG, dive computer, compass Conditions that affect me while diving include - Correct Answer-temperature, water movement, sunlight, aquatic life, and bottom composition In most environments, as I go deeper the water gets - Correct Answer-colder Particles made of fine material affect visibility by - Correct Answer-remaining suspended for long periods The two types of water motion that affect me as a diver are - Correct Answer-waves and current If I were caught in a current and carried downstream past my planned exit, I should swim _______ the current - Correct Answer-across The most common injury divers suffer may be - Correct Answer-sunburn "Diving within my limits" simply means diving within the limits of my - Correct Answertraining, experience, and comfort The type of interaction I should generally have with aquatic life is - Correct Answerpassive Potentially hazardous aquatic animals are, broadly, those that _____ and those that ______ - Correct Answer-sting/puncture, bite While underwater near a kelp forest, my buddy and I see a large shark approach. We should - Correct Answer-remain calm, near the bottom, and watch it One potential hazard of some plants and kelp is - Correct Answer-entanglement ______ and ______ generally determine the best way to wade in and out or how soon I put my fins on - Correct Answer-bottom composition, aquatic life My buddy and I experience mild surge after entering the water. We may be able to adjust for this by diving - Correct Answer-deeper Tides affect conditions related to diving including - Correct Answer-currents, depth, and visibility While entering through mild turf, as a wave approaches, I should stand - Correct Answer-sideways to it By accident, I find myself in a strong current rushing rapidly away from shore. Generally, I should inflate my BCD and swim - Correct Answer-parallel to shore My buddy and I are boat diving with a mild current. After entering, we would use the ____ line to pull ourselves to the ____ line, which we will descend along to the bottom - Correct Answer-swim, mooring/anchor The four stages of dive planning are - Correct Answer-advance planning, preparation planning, last-minute preparation, and predive planning Typically, I decide on a dive buddy or dive operator during - Correct Answer-advance planning _______ is what I do a few hours before, to right up to when I leave for the dive site - Correct Answer-last-minute preparation I want to begin _____ at least a day or two before the dive - Correct Answer-preparation planning During _______, my buddy and I settle on details and make decisions based upon what we find at the dive site - Correct Answer-predive planning When assisting a responsive diver at the surface, I always begin by - Correct Answerestablishing buoyancy for myself and the diver After establishing buoyancy for both of us, the primary concerns with an unresponsive diver at the surface are ______ and _______ - Correct Answer-checking for breathing, providing rescue breaths if needed To breathe from a freeflowing regulator, I should hold the second stage - Correct Answer-with the mouthpiece pressed against my lips At a minimum, I should have _____ visual and _____ audible surface signaling devices - Correct Answer-1, 1 The visual signaling device that I might use to signal aircraft is a - Correct Answer-signal mirror The ______ flag indicates that a vessel has divers in the water and can't maneuver - Correct Answer-Alpha If there are no specific laws, the rule of thumb is that I should stay within ____ of my dive flag - Correct Answer-15 metres/50 feet One way to avoid disorientation while descending and ascending is to - Correct Answerfollow a reference During an underwater cleanup, my buddy and I fill up a large mesh utility bag with several kilograms/pounds of garbage. We should - Correct Answer-carry the bag in our hands When choosing a slate, the main option I usually consider is - Correct Answer-size I log my dives - Correct Answer-to document training, as a reference tool, to share information, keep related information The minimum information I would typically log includes - Correct Answer-dive site name, the depth, dive time, and my buddy's name What might I have in a spare parts kit? - Correct Answer-spare mask strap, fin straps, harness/weight belt buckle, cable (pull) ties, adjustable wrench (spanner), pliers, screw drivers, hex wrenches (allen keys), regulator mouthpiece, accessory clip, various sized cylinder valve/ DIN valve o-rings Before diving, I should refrain using _____ and ______ - Correct Answer-alcohol, tobacco As a new PADI Open Water Diver, I should refresh my dive skills with a PADI ReActivate after _____ of inactivity - Correct Answer-six months For practical purposes, air consists of oxygen (about 21%) and - Correct Answernitrogen (about 79%) The two primary factors that influence how much nitrogen dissolves into my body tissues during a dive are _____ and _____ - Correct Answer-depth, time If I exceed established depth and time limits while diving and then surface, bubbles can form in my body tissues, causing ______ - Correct Answer-decompression sickness ______ track the amount of theoretical nitrogen in my body by measuring the depth and time throughout the dive - Correct Answer-dive computers A no stop dive means I can, if necessary, ascend directly to the surface without stopping _____ the dive - Correct Answer-at any time during Repetitive dive - Correct Answer-a dive made while I still have theoretical residual nitrogen in my body Dive tables like the RDP and eRDPml use ____ tables to calculate repetitive dives - Correct Answer-three Advantages of a dive computer over dive tables include dive computers - Correct Answer-are easier to use than tables, help offset human error, and give me more time underwater Before, during, and/or between dives, my computer will tell me - Correct Answer-no stop limits, the ascent rate, emergency decompression information, and previous dive information The first step in setting up my dive computer is - Correct Answer-read the manufacturer instructions