NAUI Elearning Open Water Scuba Diver Final Exam Test Questions And Answers, Exams of Advanced Education

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NAUI Elearning Open Water Scuba Diver

Final Exam Test Questions And Answers

Symptoms of Nitrogen Narcosis are similar to: - Correct Answer- alcohol intoxication the stage of the regulator which reduces working tank pressure to intermediate pressure is: - Correct Answer-the first stage when the pressure of nitrogen is balanced between the air and your body, you are at a state of - Correct Answer-equilibrium 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 The last thing to check before making a giant stride or any water entry is that: - Correct Answer-area below is clear Engraved markings on scuba tanks include: - Correct Answer-Date of hydrostatic test, serial number, type of material A diver's body heat is lost through conduction (primarily) at a rate of approximately _________ times more rapidly than in air. - Correct Answer- 25

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 sound travels about_______ times faster in water than in air - Correct Answer- 4 a regular breathing pattern while diving would be - Correct Answer- slightly slower and deeper than you normally breathe If a diver's surface air consumption rate is 1.72bar (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) appropriate first aid measures for an unconscious scuba diver should include consideration of - Correct Answer-drowning, air embolism, and decompression sickness weighting systems are used by the diver primarily to - Correct Answer- offset the positive buoyancy created by the wet suit 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

Which of the following physical factors can make you incapable of sustaining the efforts sometimes demanded when participating in recreational diving - Correct Answer-all of the above/following; inadequate sleep, a recent head cold and recent ingestion of drugs (medicine, alcohol, narcotics) Physical fitness is an important consideration for scuba divers because it helps to prevent diving accidents due to - Correct Answer- exhaustion which is the most effective way to descend while maintaining orientation and attempting equalization of the ears - Correct Answer- feet first you should have your regulator serviced by a certified repair technician - Correct Answer-as recommended by the manufacturer A symptom of carbon monoxide poisoning is often: - Correct Answer- headache Two methods of measuring air pressure are BAR or: - Correct Answer- pounds per square inch According to NAUI, a repetitive dive is defined as more than one dive within a period of _________ hours. - Correct Answer- 24

the absolute pressure in the ocean at 16 meters (35 feet) is - Correct Answer-2.6 atmospheres absolute Atmospheric pressure at sea level is: - Correct Answer-1.0 bar / 14. pounds per square inch/ 1.0 atmosphere absolute To relieve a cramp in the calf: - Correct Answer-Bend the toe of the fin toward the knee to stretch the muscle two types of materials that scuba tanks are made from are steel and ________________ - Correct Answer-aluminum it is recommended that a dive team from an anchored boat have - Correct Answer-a trail line 30 meters long with a buoy at the end it is advisable that a sport/recreational diver - Correct Answer-avoid decompression dives 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

A diver experiencing panic should: - Correct Answer-stop, rest and breathe slowly and deeply until you recover when rinsing a regulator it is best to - Correct Answer-Leave the regulator attached to the tank or have the dust cap in place a depth that is equivalent to one atmosphere in the ocean is equal to _______ in sea water and ______ in fresh water - Correct Answer-10m (33 feet) ; 10.4m (34 feet) A diver with blood and mucous in his/her mask upon surfacing will most likely have - Correct Answer-sinus squeeze according to the NAUI dive tables dives to less than 6m (20ft) - Correct Answer-are considered as 6m (20 foot) dives Because of refraction, objects underwater appear _________ and _________ when the diver is looking through his/her mask. - Correct Answer-larger; closer When planning and executing a dive, it is important for diving buddies to: - Correct Answer-agree on a dive leader snorklers over 15 inches in length are no recommended primarily because - Correct Answer-they have too much dead air space

which of the following will help prevent seasickness - Correct Answer- settle yourself in a midway point of the boat The first color lost in the spectrum upon descent during a dive is _____. - Correct Answer-red If during a dive you and your buddy become separated, you should: - Correct Answer-spend no more than one minute looking then surface when selecting a face mask, the most important thing to consider is - Correct Answer-proper seal and fit 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 The primary purpose of the exposure suit is to: - Correct Answer- Preserve body heat during dives currents that suddenly appear and disappear are __________ and __________ is the underwater movement of water caused by wave action that you will experience when diving in areas close to shore - Correct Answer-transitory; surge

continued loss of body heat in cold water will produce - Correct Answer-all of the above/following; muscle cramps, progressive immobility, and insensibility to pain an irregular breathing pattern while diving will possibly cause - Correct Answer-carbon dioxide excess which gas law best explains diving medical problems such as ear and sinus squeeze - Correct Answer-boyle's law which of the following limits should be established prior to every scuba dive - Correct Answer-maximum bottom time, maximum depth, minimum air pressure The minimum surface interval recommended between two dives is _________ minutes. - Correct Answer- 60 what type of pressure is defined as gauge (water) pressure plus atmospheric (air) pressure - Correct Answer-absolute Breathing dry air, a scuba diver tends to become dehydrated while diving due to: - Correct Answer-Moisturizing dry inhaled air most surface waves are caused by - Correct Answer-wind

The predictable daily rise and fall of the ocean at a single point is called: - Correct Answer-the tide 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 Pressure in the middle ear is equalized through a part of the body called the: - Correct Answer-eustachian tube The dive plan should be planned based on - Correct Answer-the ability of the weakest diver Who overseas cylinders? - Correct Answer-Department of Transportation (DOT) What does NAUI stand for? - Correct Answer-National Association of Underwater Instructors What 3 materials are skirt of masks typically made of? - Correct Answer-Silicone, Rubber, and PVC Motto for dive planning - Correct Answer-plan your dive, dive your plan

How often should a scuba tank get hydrostatically tested? - Correct Answer-every 5 years How often should a scuba tank get visually inspected? - Correct Answer-every year How is a scuba tank visually inspected? - Correct Answer-take valve out of tank and look inside How to treat nitrogen narcosis? - Correct Answer-ascend hyperventilating/not breathing could cause - Correct Answer-shallow water blackout What type of regulator us an open circuit scuba regulator? - Correct Answer-demand regulator; inhale(?) What does a regulator regulate? - Correct Answer-pressure To render first aid for venomous fish wounds: - Correct Answer-Flush the wound to clean, soak in hot water, obtain medical attention. Marine wounds are - Correct Answer-more prone to infection

Treatment of stingray sting - Correct Answer-remove spine and immerse in hot water When should a tourniquet be used? - Correct Answer-Only as a last resort What is a pneuomothorax? - Correct Answer-air in the pleural space of lung/ collapsed lung Skipped breathing leads to - Correct Answer-lung overexpansion (?) 3 main causes of currents - Correct Answer-wind, tides, gravity 4 advantages of strapback fins - Correct Answer-still have boots on out of water for walking, stays on feet better, better for keeping feet warmer in cold weather, more powerful blade Henry's law of solubility - Correct Answer-gas diffuses into liquid; deeper = more gas diffusion Depth and time of standard safety stop - Correct Answer- 15 - 20 feet for 3-5 minutes