NAUI Open Water Scuba Diving Final Exam With 100% Correct Answers 2024, Exams of Advanced Education

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NAUI Open Water Scuba Diving Final

Exam With 100% Correct Answers 2024

The minimum surface interval required to avoid decompression after a dive to 88 feet for 18 min followed by a dive to 78 feet for 23 min is... - Correct Answer-4hr, 49 min when the pressure of nitrogen is balanced between the air and your body, you are at a state of _____ - Correct Answer- equilibrium Immediately upon reaching the dive site you should... - Correct Answer-observe conditions The absolute pressure in the ocean at 16 meters/53 feet is - Correct Answer-2.6 atmospheres absolute A diver's body heat is lost through conduction (primarily) at a rate of approximately _________ times more rapidly than in air. - Correct Answer- Appropriate first aid measures for an unconscious scuba diver should include consideration of - Correct Answer- drowning, air embolism, and decompression sickness

Symptoms of Nitrogen Narcosis are similar to: - Correct Answer-alcohol intoxication The predictable daily rise and fall of the ocean at a single point is called - Correct Answer-the tide A diver's inability to equalize their ears during ascent could cause - Correct Answer-a block/reverse block ________ is a worldwide emergency network of hyperbaric chambers and diving physicians - Correct Answer-Divers Alert Network (DAN) You should have your regulator serviced... - Correct Answer-as recommended by the manufacturer If a diver's surface air consumption rate is 1.72 bar/25 psi per minute, what would be the consumption rate at 20 meters/66 feet of seawater? - Correct Answer-5.16 bar per minute/75 psi per minute

Which of the following will help prevent seasickness? - Correct Answer-Settle yourself in a midway point of the boat When conducting a buoyancy check, neutral buoyancy or proper weighting is attained when, with a normal breath, you float at or near: - Correct Answer-eye level The minimum SIT recommended between two dives is - Correct Answer-60 minutes A diver with a letter group of "F" making a dive to 60 ft has a residual nitrogen time of - Correct Answer-35 minutes Sea water weighs _____ kg per liter or _____ pounds per cubic foot - Correct Answer-1.025 kg per liter / 64 pounds per cubic foot Four main actions you should consider in giving first aid for diving accidents are: - Correct Answer-maintain basic life support, call for help, treat for shock, deliver 100% oxygen The last thing to check before making any water entry is that - Correct Answer-the area below is clear

A diver with blood and mucous in his/her mask upon surfacing will most likely have: - Correct Answer-sinus squeeze What is the most effective way to descent while maintaining orientation and attempting equalization of the ears? - Correct Answer-feet first It is advisable that a sport/recreational diver... - Correct Answer-avoid decompression dives Snorkels over 15 inches in length are not recommended primarily because: - Correct Answer-they have too much dead air space The best way of becoming familiar with the diving procedures specific to a new locale is to... - Correct Answer- contact an active, preferably NAUI, dive master or instructor to orient you to the new locale Pressure in the middle ear is equalized through a part of the body called the: - Correct Answer-eustachian tube

A regular breathing pattern while diving would be - Correct Answer-slightly slower and deeper than you normally breathe A sealed balloon filled with air that has a volume of 6 cubic inches at 99 feet will have a volume of _____ cubic inches at 33 feet. - Correct Answer- Currents that suddenly appear and disappear are _____ - Correct Answer-transitory _____ is the underwater movement of water caused by wave action that you will experience when diving in areas close to shore. - Correct Answer-surge If it is suspected that the air in a tank is contaminated due to its smell or taste: - Correct Answer-do not use the tank and immediately call the dive shop that filled the tank so they can investigate the problem Atmospheric pressure at sea level is - Correct Answer-1. bar / 14.7 pounds per square inch/1.0 atmosphere absolute

What rate of ascent for diving is acceptable when using NAUI dive tables? - Correct Answer-30ft/1min or 1ft/2sec A repetitive dive is defines as more that one dive within - Correct Answer-24 hours Dive tables dives to less that 6m/20ft are considered as - Correct Answer-6m/20ft dives The two methods or measuring air pressure are?? - Correct Answer-BAR or pounds per square inch Almost all injuries from aquatic life are caused by _____ action on the part of the animal. - Correct Answer-defensive What physical factors can make you incapable of sustaining the efforts sometimes demanded when participating in recreational diving? - Correct Answer-Inadequate sleep, a recent head cold, recent ingestion of drugs (all of the above) When planing and executing a dive, it is important for dive buddies to - Correct Answer-agree on a dive leader

Your first dive is to 60 ft for 50 minutes. You spend one hour and 40 minutes on the surface, what is your adjusted maximum dive time at 60 ft? - Correct Answer-4 minutes A symptom of carbon monoxide poisoning is often: - Correct Answer-headache Open heel fins are usually the fins of choice for scuba divers because: - Correct Answer-they may be used in a wide variety of environmental conditions Because of refraction, objects underwater appear _________ and _________ when the diver is looking through his/her mask. - Correct Answer-larger; closer When selecting a face mask, the most important thing to consider is - Correct Answer-proper seal and fit A diver experiencing panic should - Correct Answer-stop, rest and breathe slowly and deeply until you recover The ________ is the direction of travel line on the compass - Correct Answer-lubber line

The two types of materials that scuba tanks are made from are - Correct Answer-steel and aluminum If during a dive you and your buddy become separated, you should: - Correct Answer-spend no more than one minute looking then surface Physical fitness is an important consideration for scuba divers because it helps prevent diving accidents due to - Correct Answer-exhaustion Sound travels about _______ times faster in water than in air - Correct Answer- Examples of natural navigation aids divers may use during dives include... - Correct Answer-ripple marks in the sand, sun brightness/available light, and bottom contours (all of the above) Engraved markings on scuba tanks include: - Correct Answer-Date of hydrostatic test, serial number, type of material

What is the point at which a sudden change in water temperature occurs? - Correct Answer-A thermocline Completing this entry level scuba certification course makes you knowledgeable and skillful enough to dive safely in or at: - Correct Answer-open water with conditions similar to those in which you were trained For optimum no-decompression bottom times, plan repetitive dives so that each successive dive is to _________ depth. - Correct Answer-a shallower To relieve a cramp in the calf - Correct Answer-Bend the toe of the fin toward the knee to stretch the muscle The first color lost in the spectrum upon descent during a dive is _____. - Correct Answer-red Breathing dry air, a scuba diver tends to become dehydrated while diving due to: - Correct Answer-moisturizing dry inhaled air

The preferred action to take if you find yourself alone and out of air at 30 feet in open water is: - Correct Answer- emergency swimming ascent It is recommended that a dive team diving from an anchored boat begin their dive - Correct Answer-against the revailing current Which of the following most readily provides assistance to a diver - Correct Answer-the diving buddy It is recommended that a dive team diving from an anchored boat have... - Correct Answer-a trail line 30 meters long with a buoy at the end A diver on the surface waving his/her hand overhead and thrashing violently indicates: - Correct Answer-distress Weighting systems are used by the diver primarily to... - Correct Answer-offset the positive buoyancy created by the wetsuit After use, diving equipment should be: - Correct Answer- rinsed thoroughly, dried, and stored in a cool place

Which limits should be established prior to every scuba dive? - Correct Answer-maximum bottom time, maximum depth, minimum air pressure When rinsing a regulator it is best to - Correct Answer- Leave the regulator attached to the tank or have the dust cap in place Continued loss of body heat in cold water will produce: - Correct Answer-muscle cramps, progressive immobility, and insensibility to pain (all of the above) To prevent air embolism, a diver should - Correct Answer- Breathe normally at all times during ascent and never hold his/her breath A depth that is equivalent to one atmosphere in the ocean is equal to _________ feet in sea water and _________ feet in fresh water. - Correct Answer-10m/33ft in sea water and 10.4m/34ft in fresh water If you are diving wearing an exposure suit, you should _____ to safely control buoyancy as you descend. - Correct Answer-add air to your buoyancy device

Which gas law best explains diving medical problems such as ear and sinus squeeze? - Correct Answer-Boyles law Which type of pressure is defined as gauge (water) plus atmospheric (air) pressure? - Correct Answer-absolute pressure If your dive buddy complains to you about having aching pain in his/her shoulder one hour after the dive, you might suspect: - Correct Answer-decompression sickness The maximum dive time for a dive to 60 ft is _________ minutes. - Correct Answer- Scuba tanks should always have some pressure in them to prevent: - Correct Answer-moisture from entering A buddy team in a NAUI Master Scuba Diver Course makes an ocean dive to 95 feet for 20 minutes. After a surface interval of 2 hours and 35 minutes, they make a repetitive dive to 70 feet (21.2 m) for 15 minutes. They remain on the surface for 2 hours and 51 minutes before diving to 45 feet (13.68 m). What is their adjusted maximum dive time for the third dive? - Correct Answer-33 minutes

Most surface waves are caused by: - Correct Answer-wind An irregular breathing pattern (skip breathing) while diving will possibly cause: - Correct Answer-carbon dioxide excess When buying or renting equipment for diving, the most important consideration is: - Correct Answer-its fit on your body The stage of the regulator which reduces working tank pressure to intermediate pressure is: - Correct Answer-The first stage The primary purpose of the exposure suit is to - Correct Answer-Preserve body heat during dives