PADI OPEN WATER DIVER 2021 QUESTIONS WITH CORRECT ANSWERS GRADED TO PASS

As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as - 18 meters/60 feet Certain medical conditions can be hazardous while diving, so it is important to answer all questions on the Medical Statement honestly and completely - True PADI courses are performance-based. This means that to be certified, I must - meet specific performance requirements Failure to complete independent study can create significant delays, and my instructor may have to cancel and reschedule sessions until I complete the assignment - True When diving in a new environment, two benefits of seeking an orientation, supervision, and/or additional training are that it helps me avoid problems and that it helps me enjoy the dive more - True As you descend in water the pressure - increases A depth change of 10 meters/33 feet causes a pressure change of - 1 bar/ata if you take 6 liters of air from the surface to 20 meters/66 feet, the volume will be - 2 liters The density of the air in the previous question ("if you take 6 liters of air from the surface to 20 meters/66 feet, the volume will be...") would be ______ the density at the surface - three times A balloon fully inflated and sealed at 10 meters/33 feet, would probably __________ during ascent to the surface - burst As I descend, increasing pressure affects my - mask, ears, sinuses A squeeze is caused by - a pressure imbalance between the surrounding pressure and an air space Equalization is the process of - adding air to an air space I should equalize - early and often, before I feel discomfort I'm descending and discover I can't equalize. The first thing I would do is - stop my descent and signal my buddy/the instructor I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing - True On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I should - cancel the dive until I'm well When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure - True The most important rule in scuba diving is to - breathe continuously and never hold your breath Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death - True During ascent I feel discomfort in my ears. I should - 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 - faster than The most efficient way to breathe dense air or underwater is to breathe - deeply and slowly My body responds to anxiety with increased breathing but slow breathing helps to reduce anxiety - True Which of the following are among the breathing rules I follow as a diver? - Breathe continuously and never, ever hold my breath; breathe slowly and deeply; do not allow myself to get winded or out-of-breath; if faced with a problem, stop, then maintain or restore slow, deep breathing Buoyancy is a force that pushes an object in water upward - True My sunglasses case falls out of my pocket into the water, but fortunately, it floats so I retrieve it. I would say my sunglasses case is ______ buoyant - positively Saltwater causes more buoyancy than freshwater because it is less dense and weighs less - False To control my buoyancy, normally I will use my weight system and my - BCD When I descend, my buoyancy tends to ________. When I ascend, it tends to _______ - decrease; increase Underwater, when I inhale, my buoyancy - increases slightly It is important to master buoyancy control because it affects almost everything I do in and underwater - True In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits - True Overall benefits of the buddy system include - practicality, safety and fun The three most important considerations in choosing scuba equipment are suitability, fit and - comfort Getting the service my gear needs may be a consideration when choosing equipment - True Before each use I should ________ my equipment - inspect I need a mask because - my eyes must be in air to focus My mask encloses my nose so I can - equalize the mask From among masks that fit me I should choose a mask that fits as far away from my face as possible - False. I want to adjust my mask so the strap rests - above my ears, over the crown of my head Snorkels are standard equipment for scuba diving because they allow me to breathe with my face in the water or in rough conditions without wasting my scuba air especially when I have little scuba air remaining - True Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use - True When my snorkel is in my mouth the tip should be - over the crown of my head Fins provide a large surface area so my legs can push against the water effectively - True The two basic fin styles are __________ fins - adjustable and full-foot My primary considerations when choosing fins are fit and - blade size To prepare adjustable fins, I should adjust the straps wearing my wet suit boots - True Identify the four systems that make up a scuba kit - Cylinder, regulator, BCD, weight system There's no real benefit to choosing the components of my scuba kit as an integrated package - False The LPI mechanism inflates the BCD with air from my scuba cylinder - True My BCD should have an adequate capacity to easily float my equipment and me at the surface - True My BCD should fit - snugly but not restrict breathing when fully inflated My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care? - Yes Identify the components of a regulator - First stage, primary second stage, SPG/computer, low pressure inflator hose The most important consideration when choosing a regulator is - ease of breathing When choosing an alternate air source, a primary consideration involves deciding - between independence and simplicity My SPG is always part of my dive computer - False My local dive pro will usually set up my regulator components - True When setting up and wearing my kit, the alternate air source - secures in the triangle formed by my hips and chin Regulators need periodic overhauls, typically every year to two years - True The _________ is a safety device that relives accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail - Burst valve A cylinder with a higher working pressure always holds more air than a cylinder with a lower working pressure - False I'm renting a scuba cylinder at a dive resort. Among the cylinders for hire, some have green and yellow bands that read "Nitrox." As a PADI Open Water Diver with no other training or instructor supervision, am I qualified to use one of these cylinders - No I bring a cylinder abroad a dive boat in preparation for a trip out to a nearby reef. The normal procedure would be to - secure the cylinder in a rack Scuba cylinders require pressure testing _______, and visual inspection _________ - every 2-5 years, annually I should have my scuba cylinder filled - only by reputable scuba air stations The most important feature in my weight system is its - quick release I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight - True Trim means having the right _____ of weight - distribution One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one - True Accessory weights - can help you adjust your trim Underwater objects appear - larger and/or closer My buddy has a bright red shoulder patch on his wet suit. If we're diving together in a very clear water on a sunny day, at 12 meters/40 feet I would expect the patch to appear - less red than at the surface While my buddy and I are diving, a motorboat passes by about 300 meters/yards away. Which of the following statements is true? - I may have difficulty determining where the boat is based on sound Because water is denser than air, it takes more effort to move through water - True To move efficiently as a diver, I should move - slowly and steadily Streamlining benefits me as a diver because it reduces drag, which helps me save energy - True Trim is important for streamlining because - poor trim raises or lowers my feet, causing drag Water's density works best for me when I use the skill of - controlling my buoyancy I chill faster in water than air of the same temperature because water absorbs more heat than air does - True To stay comfortably warm during a dive, I - wear an appropriate exposure suit After 30 minutes underwater, I start to feel a bit too cold and uncomfortable. I should - end the dive While diving, I start to feel cool and shortly begin to shiver uncontrollably. I should - end the dive immediately, dry off and seek warmth While scuba diving, I should breathe - slowly and deeply One method of airway control is to inhale slowly. I can also ___________ to help breathe past small amounts of water in my regulator. - raise my tongue If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely that I am experiencing overexertion. - True Overexertion results from - prolonged increased effort If I think I'm overexerting while underwater, I should stop, signal my buddy and ________ - rest My buddies and I are planning a dive. Among other things, we should address how to enter and exit the water, the maximum depth and time, when to turn the dive and what to do if we get separated - True As my buddy and I kit up, the normal practice is to be entirely independent. Helping each other is discouraged - False When I conduct a predive safety check, the "A" in the recall phrase includes - confirming adequate air pressure for the dive The buddy system is _____ responsibility - my 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 - 90 bar/1300 psdi At the surface, it's a good habit to keep my mask on and my snorkel or regulator in my mouth because it helps me deal with difficulties more effectively - True My buddies and I plan to enter the water, but swim on the surface to a descent point about 50 meters/yards away. A primary reason we will do this because - it saves our cylinder air for the dive For the 50 meter/yard swim, my buddies and I will swim _________ because it is less tiring - on our backs To stay with my buddy while surface swimming, generally it works well to swim - side to side I'm descending in open water with my buddies. After confirming they are ready, the next step is to signal "descend" and slowly deflate my BCD. - False When descending with a reference, I would normally - use it as a visual reference only My buddy and I have just started our descent. I begin equalizing - immediately, as soon as my head goes underwater As I descend while wearing a wet suit, my buoyancy will tend to ________ - decrease During my descent, to control my buoyancy I add air to my BCD - in small amounts, frequently Before starting my ascent, I should check my dive computer to be sure I'm within its limits - True To start my ascent, I should - swim up gently When I'm ascending, I should ascend _______ - slowly - at my computer's required rate I'm ascending from a dive during which I'm wearing a wet suit. My buoyancy will ______ as I ascend, unless I adjust with my BCD. - increase