Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
PADI Open Water Diver Final Exam Questions and Answers (Latest Update 2024)
Typology: Exams
1 / 22
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/ 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 Answer ✅deeply 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 Answer ✅true 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 Answer ✅immediately, 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 ✅z-knife 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 Answer ✅training, experience, and comfort The type of interaction I should generally have with aquatic life is - Correct Answer ✅passive
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 Answer ✅establishing 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 Answer ✅follow 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 Answer ✅nitrogen (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 I would find a minimum surface interval when, after a dive, I want to know how long the _____ would be - Correct Answer ✅time at the surface One way to find a _______ with a computer is to periodically check the no stop times for the depth you want, between dives - Correct Answer ✅minimum surface interval Going to altitude after diving may be a problem because the - Correct Answer ✅lower pressure can increase DCS risk
My buddy and I have made two no stop dives for the last two days. Based on current recommendations, we should wait at least _____ after our last dive before flying - Correct Answer ✅18 hours When diving at an altitude of _____ or higher, I need to use altitude diving procedures - Correct Answer ✅ 300 metres/1000 feet Cold and/or strenuous dives may be a problem with respect to DCS because - Correct Answer ✅I may end the dives with more dissolved nitrogen than calculated by dive computers or tables Using the RDP Table or eRDPml, I should calculate a dive as - Correct Answer ✅4 metres/10 feet deeper than the actual depth If I go over a no stop limit, I - Correct Answer ✅will have to make one or more emergency decompression stops
The term "decompression illness" - Correct Answer ✅includes both lung overexpansion and DCS Treatment for most cases of DCI requires - Correct Answer ✅recompression in a chamber Gas narcosis - Correct Answer ✅Thought to be caused by the increased amount of dissolved gases in body tissues slowing nerve impulses that travel in the brain and nervous system Most divers usually begin to notice gas narcosis at a depth of approximately - Correct Answer ✅30 metres/100 feet The ______ is always my direction of travel when navigating with a compass - Correct Answer ✅lubber line I should hold my line so the _______ is aligned with the centerline of my body - Correct Answer ✅lubber line
As I swim while navigating with a compass, I should keep the _____ within the index marks - Correct Answer ✅north needle I've just finished a single no stop dive with my buddy. We have not been diving in the past several days, and this is the only dive we make. Based on current recommendations, the minimum surface interval before we fly is - Correct Answer ✅12 hours My buddy and I want to travel in a straight line using a compass, I should point the ________ in our desired travel direction, then rotate the ________ until the ________ is/are over the ________ - Correct Answer ✅lubber line, bezel, index marks, magnetic north needle