Padi open water diver final exam questions and answers 2024, Exams of Water Resources Planning and Management

Download Padi open water diver final exam questions and answers 2024 and more Exams Water Resources Planning and Management in PDF only on Docsity! PADI Open Water Diver Final Exam Questions and Answers Graded A+ As a newly certified PADI Open Water Diver, I will be trained to dive with a buddy as deep as ________. ✔Ans✔ 18 metres/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. a. True b. False ✔Ans✔ a. True PADI courses are performance-based. This means that to be certified, I must ________ ✔Ans✔ meet specific performance requirements. Failure to complete assigned independent study can create significant delays, and my instructor may have to cancel and reschedule sessions until I complete the assignment. a. True b. False ✔Ans✔ a. True While diving in a new dive 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. a. True b. False ✔Ans✔ a. True As you descend in water the pressure ________ ✔Ans✔ increases A depth of 10 metres/33 feet causes a pressure change of ________. ✔Ans✔ 1 bar/ata If you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be ________. ✔Ans✔ 2 litres The density of the air in 6 litres from the surface to 20 metres/66 feet is ________ ✔Ans✔ three times greater A balloon fully inflated and sealed at 10 metres/33 feet, would probably ________ during ascent to the surface. ✔Ans✔ burst As I descend, increasing pressure affects my (choose all that apply): ✔Ans✔ mask, ears and sinuses A squeeze is caused by ________ ✔Ans✔ a pressure imbalance between the surround pressure and an air space Equalization is the process of ________ ✔Ans✔ adding air to an air space I should equalize ________ ✔Ans✔ before I feel pain or discomfort I'm descending and discover I can't equalize. The first thing I would do is ________ ✔Ans✔ 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. a. True b. False ✔Ans✔ a. True On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I should ________ ✔Ans✔ cancel the dive until I'm well In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits. a. True b. False ✔Ans✔ a. True Overall benefits of the buddy system include ________ ✔Ans✔ practicality, safety and fun The three most important considerations in choosing scuba equipment are suitability, fit and ________ ✔Ans✔ comfort Getting the service my gear needs may be a consideration when choosing equipment. a. True b. False ✔Ans✔ a. True Before each use, I should ________ my equipment. ✔Ans✔ inspect I need a mask because ________ ✔Ans✔ my eyes must be in air to focus My mask encloses my nose so I can ________ ✔Ans✔ equalize the mask From among masks that fit me, I should choose a mask that fits as far away from my face as possible. a. True b. False ✔Ans✔ b. False Choose a low profile that sits as close to your face as possible I want to adjust my mask so the strap rests ________ ✔Ans✔ 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. a. True b. False ✔Ans✔ a. True Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use. a. True b. False ✔Ans✔ a. True When my snorkel is in my mouth, the tip should be ________ ✔Ans✔ over the crown of my head Fins provide a large surface area so my legs can push against the water effectively. a. True b. False ✔Ans✔ a. True The two basic fin styles are ________ fins. ✔Ans✔ adjustable and full-foot My primary considerations when choosing fins are fit and ________ ✔Ans✔ blade size To prepare adjustable fins, I should adjust the straps wearing my wet suit boots. a. True b. False ✔Ans✔ a. True BCD (Buoyancy Control Device) ✔Ans✔ Holds your kit together and allows you to adjust buoyancy throughout the dive. Regulator ✔Ans✔ Delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the water Cylinder ✔Ans✔ Hold the high-pressure breathing air supplied by your regulator during the dive. Weight System ✔Ans✔ 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. Identify the four systems that make up a scuba kit. ✔Ans✔ Cylinder, BCD, Regulator, Weight System There's no real benefit to choosing the components of my scuba kit as an integrated package. a. True b. False ✔Ans✔ b. False Although the components are generally interchangeable, choosing your scuba kit as a package helps you best meet your preferences Inflatable Bladder ✔Ans✔ very durable bag that you inflate or deflate to change your buoyancy Cylinder band and harness/jacket ✔Ans✔ The bladder integrates with an adjustable harness that holds the cylinder on your back. The bladder may be entirely behind you, or wrap partially around your waist and/or over your shoulders. With some systems, you can interchange harnesses and bladders to accommodate sizing and preferences. a. True b. False ✔Ans✔ a. True When setting up and wearing a kit, the alternate air source ________ ✔Ans✔ secures in the triangle formed by my hips and chin Regulators need periodic overhauls, typically every year to two years. a. True b. False ✔Ans✔ a. True The ________ is a safety device that relives accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail. ✔Ans✔ burst disk A cylinder with a higher working pressure always holds more air than a cylinder with a lower working pressure. a. True b. False ✔Ans✔ b. False A cylinder's capacity depends upon both its working pressure and its internal capacity I bring a cylinder aboard a diver boat in preparation for a trip out to a nearby reef. The normal procedure would be to ________ ✔Ans✔ secure the cylinder in a rack Scuba cylinders require pressure testing ________ and visual inspections ________ ✔Ans✔ every 2-5 years, annually I should have my scuba cylinder filled ________ ✔Ans✔ only by reputable scuba air stations The most important feature in my weight system is its ________ ✔Ans✔ quick release I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight. a. True b. False ✔Ans✔ a. True Trim means having the right ________ of weight. ✔Ans✔ distribution One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one. a. True b. False ✔Ans✔ a. True Accessory weights ________ ✔Ans✔ can help you adjust your trim Underwater objects appear ________ ✔Ans✔ larger and/or closer My buddy has a bright red shoulder patch on his wet suit. If we're diving together in very clear water on a sunny day, at 12 metres/40 feet I would expect the patch to appear ________ ✔Ans✔ less red than at the surface Because water is denser than air, it takes more effort to move through water. a. True b. False ✔Ans✔ a. True To move efficiently as a dive, I should move ________ ✔Ans✔ slowly and steadily Streamlining benefits me as a diver because it reduces drag, which helps me save energy. a. True b. False ✔Ans✔ a. True Trim is important for streamlining because ________ ✔Ans✔ poor trim raises or lowers my feet, causing drag Water's density works best for me when I use the skill of ________ ✔Ans✔ controlling my buoyancy I chill faster in water than in air of the same temperature because water absorbs more heat than air does. a. True b. False ✔Ans✔ a. True To stay comfortably warm during a dive, I ________ ✔Ans✔ wear an appropriate exposure suit After 30 minutes underwater, I start to feel a bit too cool and uncomfortable. I should ________ ✔Ans✔ end the dive While diving, I start to feel cool and shorty being to shiver uncontrollably. I should ________ ✔Ans✔ end the dive immediately, dry off and seek warmth While scuba diving, I should breathe ________ ✔Ans✔ 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. ✔Ans✔ raise my tongue If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely I am experiencing overexertion. My buddies and I plan to enter the water, but swim on the surface to a descent point 50 meter/yards away. A primary reason we will do this is because ________ ✔Ans✔ 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. ✔Ans✔ on our backs To stay with my buddy while surface swimming, generally it works well to swim ________ ✔Ans✔ side by side Five steps you follow when you descend are ________ ✔Ans✔ 1. Confirm that your buddies are ready 2. Orient yourselves to something at the surface or underwater, such as the boat or a landmark 3. Switch from your snorkel to your regulator 4. Check, and if necessary activate, your dive computer or timer 5. Signal "descend" and, with your buddies, slowly deflate your BCD 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. a. True b. False ✔Ans✔ b. False You orient yourself, switch to your regulator and check your dive computer or timing device before deflating your BCD When descending with a reference, I would normally ________ ✔Ans✔ use it as a visual reference only My buddy and I have just started our descent. I begin equalizing ________ ✔Ans✔ immediately, as soon as my head goes underwater As I descend while wearing a wet suit, my buoyancy will tend to ________ ✔Ans✔ decrease During my descent, to control my buoyancy I add air to my BCD ________ ✔Ans✔ in small amounts, frequently Five steps you follow when you ascend are ________ ✔Ans✔ 1. Signal "up" and confirm that your buddies are ready 2. Check your dive computer to be sure you're within its limits 3. Look up and hold up your BCD deflator hose. 4. Ascend slowly, no faster than 18 meters/60 feet per minute but 10 meters/30 feet per minute is better 5. Look up and turn as you ascend, and stay with your buddies. Watch for obstacles overhead. Reach up as you near and break through the surface A safety stop is ________ ✔Ans✔ a simple pause in your ascent between 6 meters/20 feet and 3 meters/10 feet (commonly 5 meters/15 feet) for three to five minutes Before starting my ascent, I should check my dive computer to be sure I'm within its limits. a. True b. False ✔Ans✔ a. True To start my ascent, I should ________ ✔Ans✔ swim up gently When I'm ascending, I should ascend ________ ✔Ans✔ slowly - no slower than 18 meter/60 feet per minute I'm ascending from a dive during which I'm wearing a wet suit. My buoyancy will ________ as I ascend, unless I adjust it with my BCD. ✔Ans✔ increase To control my buoyancy while ascending, I should ________ ✔Ans✔ vent my BCD in small amounts frequently I would never find it necessary to ascend without a reference. a. True b. False ✔Ans✔ b. False You may have to ascend away from a planned reference due to losing direction or to handle an emergency or problem. A safety stop is between ________ and ________ for three to five minutes. ✔Ans✔ 6m/20ft, 3m/10ft When I reach the surface, the first thing I do is ________ ✔Ans✔ inflate my BCD Skin suits (body suits) ✔Ans✔ wear them in comfortably warm water to protect you from minor cuts, scrapes, stings and sunburn I wear an exposure suit while diving for ________ ✔Ans✔ protection and warmth Which type of exposure suit requires a snug fit, without which water would carry away heat or it would be uncomfortable? ✔Ans✔ wet suit Which type of exposure suit requires special training? ✔Ans✔ dry suit A hood is important when diving in water cooler than approximately 70 degrees. a. True b. False ✔Ans✔ a. True Silt/mud ✔Ans✔ clay, fine organic/inorganic material or mud Sand ✔Ans✔ larger, coarser particles Rock ✔Ans✔ gravel and larger rock Coral ✔Ans✔ living and dead coral in tropical water Vegetation ✔Ans✔ various plants and algae found in both fresh and salt water I can enjoy diving in many different aquatic environments that include coral reefs, flooded quarries and human-made dive environments. a. True b. False ✔Ans✔ a. True In most (but not all) environments, as I go deeper the water gets ________ ✔Ans✔ colder Although somewhat subjective, I measure visibility as how far I can see ________ underwater ✔Ans✔ horizontally Particles made of fine material affect visibility by ________ ✔Ans✔ remaining suspended for long periods When diving in reduced visibility, it's a good idea to descend and ascend with a reference. a. True b. False ✔Ans✔ a. True When diving in clear water, I don't have to worry as much about staying close to my buddy. a. True b. False ✔Ans✔ b. False In clear water, you may get too far from your buddy because you can still see each other. As a rule of thumb, stay within two seconds of each other. The two types of water motion that most affect me as a diver are waves and current. a. True b. False ✔Ans✔ a. True When diving in a mild current, normally I want to begin my dive ________ the current. ✔Ans✔ headed into If I were caught in a current and carried downstream past my planned exit, I should swim ________ the current. ✔Ans✔ across Due to a problem, my buddy and I had to surface away from the boat. There is a current, so we swam across it to reach the line trailed from the boat, but the current pushed us too quickly. To avoid overexertion, we should ________ ✔Ans✔ establish positive buoyancy, signal the boat to pick us up and remain calm When I'm diving, I want to avoid bottom contact because ________ ✔Ans✔ - it helps keep the water clearer - there may be some hazard of cuts, scrapes or stings - fragile aquatic life could be damaged The most common injury divers suffer may be ________ ✔Ans✔ sunburn Within a recreation depth range, very distinct temperature changes are most common in ________ water environments. ✔Ans✔ fresh Assess the dive conditions at a site based on ________ ✔Ans✔ weather, season, water motion, water appearance, reports online and from other divers, dives made at similar sites in the area I learn to assess dive conditions by reading dive magazines and online sources about diving. a. True b. False ✔Ans✔ b. False You learn to assess dive conditions based on what other divers and your instructor show you, and based on experience diving and continuing your education If any aspect of a dive, including my assessment of the environment, causes me significant concern and/or anxiety, I should ________ ✔Ans✔ determine how to handle the concern, or not dive Local orientations are important for safety and for ________ ✔Ans✔ making my dives more enjoyable "Diving within my limits" simply means diving within my limits of my ________ ✔Ans✔ training, experience, and comfort One way exceeding my limits can increase my risk is by exposing me to hazards that I'm not prepared to handle or may not even recognize until it's too late. a. True b. False ✔Ans✔ a. True Diving with an experienced diver and gaining dive experience are two ways to generally expanded my limits, but they don't replace training for activities that require training. a. True b. False ✔Ans✔ b. False How far you swim before descending and/or after descending varies with the dive site Surge ✔Ans✔ Back-and-forth motion caused by waves passing overhead. The bigger the waves, the stronger the surge and the deeper it affects you. Rip currents ✔Ans✔ result when waves push water over a long obstruction (such as a reef or sandbar) Upwelling ✔Ans✔ wind blowing from shore can push surface water away, causing cooler, deeper water to rise toward the surface to replace it Tides ✔Ans✔ result from the moon and sun's gravity pulling on the water of the oceans My buddy and I are assessing conditions for a shore dive. The waves are breaking when they are about 1 meter/3 feet tall. About how deep is the water where they break? ✔Ans✔ 1 meter/ 3 feet Diving in moderate to large surf requires special training. Diving in large and rough surf can be hazardous. a. True b. False ✔Ans✔ a. True My buddy and I experience mild surge after entering the water. We may be able to adjust for this by diving ________ ✔Ans✔ deeper While assessing conditions, my buddy and I note that there are waves approaching shore from an angle. Our dive plan should account for having ________ ✔Ans✔ a current that moves us parallel to shore By accident, I find myself in a strong current rushing rapidly away from shore. Generally, I should inflate my BCD and swim ________ ✔Ans✔ parallel to shore The wind has been blowing from shore for several days. During a dive, it is likely I will find ________ water. ✔Ans✔ cooler, deeper Tides affect conditions related to diving including ________ ✔Ans✔ currents, depth and visibility When entering through mild surf, as a wave approaches I should stand ________ ✔Ans✔ sideways to it The Bow ✔Ans✔ The front of the boat. "Forward" means toward the bow. The Stern ✔Ans✔ The back of the boat. "Aft" means toward the stern. Port ✔Ans✔ The left side of the boat as you face forward Starboard ✔Ans✔ The right side of the boat as you face forward Leeward ✔Ans✔ The side away from the wind Windward ✔Ans✔ The side toward the wind The bridge (wheelhouse) ✔Ans✔ The portion of the boat where the controls are; often elevated for visibility. Head ✔Ans✔ The boat's toilet facilities or the boat's commode specifically. Galley ✔Ans✔ The boat's kitchen/cooking area (in some areas, most larger dive boats have gales; in others, few do) Swim step ✔Ans✔ A platform on the stern that is close to water level. You commonly enter and exit the water there. While packing my gear bag for the boat dive, I want to pack it so ________ ✔Ans✔ what I need first is on top It is recommended that I avoid excessive alcohol the night before a dive, or before any day of diving. a. True b. False ✔Ans✔ a. True While on a boat, I begin to feel seasick, but I don't feel like I am going to be sick. The best place to go is ________ ✔Ans✔ into fresh air, close to the water level in the center of the boat A roll call (or other method to verify everyone is aboard before leaving each dive site) is important for my safety. a. True b. False ✔Ans✔ a. True It is important to secure my equipment on a boat in rough conditions, but it is not important in calm conditions. a. True b. False ✔Ans✔ b. False secure your equipment even in calm conditions because an unexpected wave (a passing boat's wake, for example) may cause it to fall and injure someone, break something or fall overboard Continuing my diver education can extend and refine the emergency skills I learn in the course. a. True b. False ✔Ans✔ a. True I can prevent or control most dive problems that occur at the surface by diving within my limits, relaxing while I dive and ________ ✔Ans✔ becoming and staying buoyant If a diving related problem occurs at the surface, I should immediately switch from my snorkel to my regulator. a. True b. False ✔Ans✔ b. False you should immediately establish buoyancy by inflating your BCD and/or dropping your weights I can tell if my buddy is in control (not panicked) with a problem at the surface if my buddy ________ ✔Ans✔ appears relatively relaxed, asks for help, follows instructions, breathes form the snorkel or regulator When assisting a responsive diver at the surface, I always begin by ________ ✔Ans✔ 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 ________ ✔Ans✔ checking for breathing, providing rescue breaths if needed My buddy doesn't move while floating at the surface, so I tap my buddy's shoulder. My buddy signals "okay." I should disregard this signal and assume my buddy is unresponsive. a. True b. False ✔Ans✔ b. False A diver who responds to communication is not unresponsive When assisting an unresponsive diver at the surface, if I find the victim isn't breathing, I should ________ ✔Ans✔ provide rescue breaths To prevent and control underwater problems, I should ________ ✔Ans✔ relax while I dive, plan my air use, dive within my limits While diving, I begin to feel air-starved because I have been swimming hard. I should ________ ✔Ans✔ signal "stop" and rest To breathe from a free flowing regulator, I should hold the second stage ________ ✔Ans✔ with the mouthpiece pressed against my lips If I were to become entangled underwater, I should ________ ✔Ans✔ stop, think and work to free myself During a dive, I find I am running low on air sooner than expected. My buddy and I are still several minutes from our planned point, but I am almost at reserve pressure. We should ________ ✔Ans✔ ascend immediately where we are Although it shouldn't have happened, on a dive I fail to watch my SPG and run out of air. I don't have a pony bottle or self-contained ascent bottle. My buddy is close at hand - less than two seconds away, and has an alternate second stage. My best option is probably to ________ ✔Ans✔ ascend using an alternate air source If I am bringing an unresponsive diver to the surface and the victim becomes too buoyant to control, I should stay with the victim even if our ascent is too fast. a. True b. False ✔Ans✔ b. False You should let the victim go, complete your ascent at the safe rate, and resume the rescue at the surface A diver who is or was unresponsive may have which of the following signs and symptoms? ✔Ans✔ difficulty breathing, unconsciousness, cardiac and respiratory arrest, chest pain My first priority when assisting someone who is or was unresponsive is to contact emergency medical care and to ________ ✔Ans✔ be sure the person is breathing A diver who was unresponsive is breathing. Nonetheless, I should check breathing frequently while waiting for emergency medical care. a. True b. False ✔Ans✔ a. True A diver who was unresponsive underwater has become fully responsive, is fully alert and shows no apparent further problems. The diver still requires medical examination. a. True b. False ✔Ans✔ a. True At a minimum, I should have ________ visual and ________ audible surface signaling devices. ✔Ans✔ 1, 1 The visual signaling device that I might use to signal an aircraft is ________ ✔Ans✔ signal mirror Alpha flag ✔Ans✔ blue-white pennant, and indicates that the vessel flying it has divers in the water and can't maneuver Traditional dive flag ✔Ans✔ Red rectangle with a white diagonal stripe. Indicates there are divers below and boats should keep clear. It is recommended that I have a complete physical examination when I start diving and regularly thereafter. a. True b. False ✔Ans✔ a. True Factors that can strain my heart in diving include ________ ✔Ans✔ swimming hard, carrying equipment, climbing a ladder, heat stress If I may be predisposed to heart disease, I should consult my doctor so I can assess and manage the risk as a diver. a. True b. False ✔Ans✔ a. True Before diving, I should refrain using ________ and ________ ✔Ans✔ alcohol, tobacco Before using prescribed or over-the-counter medication, if I am not sure how they will affect me diving, I should consult my physician. a. True b. False ✔Ans✔ a. True The best way to keep my dive knowledge and skills current and refreshed is to ________ ✔Ans✔ use them by diving regularly As a new PADI Open Water Diver, I should refresh my dive skills with a PADI ReActivate after ________ of inactivity ✔Ans✔ six months Continuing my diver education helps keep my skills and knowledge sharp by ________ ✔Ans✔ allowing me to visit new dive sites, increasing my opportunities to dive, expanding the types of diving I do, introducing me to new buddies I can dive with The four issues in diving that relate to the component gases in air are ________ ✔Ans✔ oxygen toxicity, decompression sickness, contaminated air, gas narcosis Air consists of oxygen and ________ ✔Ans✔ nitrogen Air is ________ percent oxygen ✔Ans✔ 21 percent If I dive within recreational limits using air, I avoid the problems associated with oxygen being toxic or causing fire/combustion issues. a. True b. False ✔Ans✔ a. True As a PADI Open Water Diver, I should not dive with a cylinder labeled "oxygen" or known to have 100 percent oxygen. a. True b. False ✔Ans✔ a. True Enriched air nitro can have oxygen issues. To avoid these, I should become qualified to dive with enriched air in the PADI Enriched Air Diver course, or be under the supervision of a PADI Enriched Air Instructor. a. True b. False ✔Ans✔ a. True Possible causes of contaminated air include ________ ✔Ans✔ getting a cylinder filled at an improper source, improper maintenance of the filling system, very high levels of contaminant in the source gas-more than the filters can keep out A diver breathing contaminated air my have signs/symptoms of ________ ✔Ans✔ headache, nausea, dizziness, unconsciousness/unresponsiveness, cherry-red lips/fingernail beds After a dive, my buddy feels ill and has cherry red lips and nail beds. After breathing oxygen, my buddy seems to be doing fine, so no other action is required. a. True b. False ✔Ans✔ b. False The diver should have medical attention in all cases of suspected contaminated air To avoid contaminated air, I should have my cylinder filled only at reputable scuba air sources. a. True b. False ✔Ans✔ a. True The signs and symptoms of decompression sickness (DCS or "the bends") include ________ ✔Ans✔ paralysis, dizziness, tingling, joint and limb pain, shock, numbness, difficulty breathing, weakness and prolonged fatigue, in severe cases unconsciousness and death The following secondary factors that can contribute to DCS are ________ ✔Ans✔ fatigue, cold, illness, age, dehydration, poor fitness/high body fat, injuries, alcohol consumption before or after a dive, vigorous exercise before during or immediately after the dive The two primary factors that influence how much nitrogen dissolves into my body tissues during a dive are ________ and ________ ✔Ans✔ depth, time If I exceed established depth and time limits while diving and then surface, bubbles can form in my body tissues, causing decompression sickness. a. True b. False ✔Ans✔ a. True My dive computer only calculates while I am underwater. It doesn't do anything between dives. a. True b. False ✔Ans✔ b. False your dive computer continues to calculate until your theoretical nitrogen levels return to normal I must use the same dive computer the entire day of diving, on all dives, and not share it with another diver. a. True b. False ✔Ans✔ a. True Dive tables like the RDP and eRDPml use ________ tables to calculate repetitive dives ✔Ans✔ 3 The four advantages that made dive computers far more popular are ________ ✔Ans✔ easier to use than tables, help offset human error, give you more time underwater, have other features to record your dive Practically all dive computers provide this information before, during and/or between dives ________ ✔Ans✔ no stop (no decompression) limits, depth, elapsed time, no stop time remaining, ascent rate, emergency decompression, previous dive information The first step in setting up my dive computer is to ________ ✔Ans✔ read the manufacturer instructions During a dive with my dive computer, my buddy and I will turn the dive based on the first limit we reach: remaining no stop time or air supply turn point. a. True b. False ✔Ans✔ a. True The six guidelines when diving with a computer are ________ ✔Ans✔ dive the plan, stay well within your computer's limits, follow the most conservative computer-yours or a buddy's, watch your SPG, start at your deepest point and go shallower, ascend slowly well within your computers ascent rate During a dive, my dive computer allows more dive time than my buddy and I planned for a given depth. We have plenty of air, so it's okay to stay longer or go deeper than we planned. a. True b. False ✔Ans✔ b. False don't exceed your planned depth or time just because your computer will let you During a dive, my dive computer fails and I'm not using a backup. I should ________ ✔Ans✔ ascent, make a safety stop and end the dive Are divers a significant threat to the overall health of the underwater environment? ✔Ans✔ no One reason it is important to apply environmentally friendly dive skills is to preserve the natural beauty for other divers. a. True b. False ✔Ans✔ a. True My influence as a diver and ambassador for the underwater world allows me to be part of the solution to the problems the world's aquatic ecosystems face. a. True b. False ✔Ans✔ a. True I would find a minimum surface interval when, after a dive, I want to know how long the ________ would be ✔Ans✔ time at the surface One way to find the minimum surface interval with a computer is to periodically check the no stop times for the depth you want, between dives. a. True b. False ✔Ans✔ a. True I can use the RDP Table or eRDPml to find the exact time my dive computer requires a minimum surface interval. a. True b. False ✔Ans✔ b. False The RDP Table or eRDPml will give you a useful estimate of your computer's minimum surface interval, but it will probably not be exactly the same Going to altitude after diving may be a problem because the ________ ✔Ans✔ lower pressure can increase DCS risk The difference between flying after diving and altitude diving is that when flying after diving, I go to altitude after a dive, and in altitude diving, I begin and end a dive at altitude. a. True b. False ✔Ans✔ a. True My buddy and I have made two no stop dives a day for the last two days. Based on current recommendations, we should wait at least ________ after our last dive before flying. ✔Ans✔ 18 hours Flying after diving recommendations may change over time, so I should check online and print sources to keep up with and follow the most current ones. a. True b. False ✔Ans✔ a. True Four basic features of a standard underwater compass are ________ ✔Ans✔ magnetic north needle - needle that can rotate so it always points to magnetic north lubber line - straight line through the center of the compass face or along the side from the 6 to the 12 bezel with index marks - rotates so you can align two, small parallel marks over the north needle heading reference - most compasses have numbers to record your heading Underwater navigation helps me save air and can help me get to an exit point the shortest way if I have a problem. a. True b. False ✔Ans✔ a. True The ________ is/are always my direction of travel when navigating with a compass. ✔Ans✔ lubber line I should hold my compass so the ________ is/are aligned with the centerline of my body. ✔Ans✔ libber line As I swim while navigating with a compass, I should keep the ________ within the index marks. ✔Ans✔ north needle With most electronic compasses, to navigate in a straight line, I swim with the same degree heading showing. a. True b. False ✔Ans✔ a. True As a new PADI Open Water Diver, I was trained to a maximum depth of ________ (or the actual depth I reached, if shallower). ✔Ans✔ 18 meters/60 feet A reverse block (also called a reverse squeeze) results when ________ ✔Ans✔ expanding air becomes trapped in a body air space As I descend, I need to equalize air spaces. Two accepted ways of equalizing my ears are ________ ✔Ans✔ block my nose and attempt to gently blow through it, swallow and wiggle the jaw from side to side