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NAUI ELEARNING OPEN WATER SCUBA DIVER
FINAL TEST | ALL QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) | GRADED A+ |
LATEST VERSION (JUST RELEASED)
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 Common signs of a panicked diver ------CORRECT ANSWER--------------- gear rejection, flailing, yelling, high treading, big eyes A dive knife is a ------CORRECT ANSWER---------------tool What should you ditch first in an emergency? ------CORRECT ANSWER---- -----------dive belt What does a + sign on a tank mean? ------CORRECT ANSWER--------------- overfilled by 10% on steel tank
Is the pressure gauge attached to low pressure hose? ------CORRECT ANSWER---------------no How often should you equalize your ears? ------CORRECT ANSWER-------- -------early and often Your entry-level NAUI Scuba Diver certification is a "license to _____." ------ CORRECT ANSWER---------------learn Physical fitness is an important consideration for scuba divers because it helps to prevent diving accidents due to ------CORRECT ANSWER----------- ----exhaustion 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 Which of the following physical factors can make you incapable of sustaining efforts sometimes demanded when participating in recreational diving? ------CORRECT ANSWER---------------ALL OF THE ABOVE
- inadequate sleep
- recent head cold
- recent ingestion of drugs
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 Scuba tanks should always have some pressure in them to prevent: ------ CORRECT ANSWER---------------moisture from entering
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 / 14.7 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 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 When buying or renting equipment for diving, the most important consideration is: ------CORRECT ANSWER---------------its fit on your body
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 Immediately upon reaching the dive site, you should ------CORRECT ANSWER---------------observe conditions 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--------------- 12
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 Lung expansion injuries ------CORRECT ANSWER--------------- Subcutaneous emphysema, mediastinal emphysema, pneumothorax, arterial gas embolism
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 Engraved markings on scuba tanks include: ------CORRECT ANSWER------ ---------Date of hydrostatic test, serial number, type of material Two types of materials that scuba tanks are made from are steel and _________. ------CORRECT ANSWER---------------aluminum
Proper maintenance of instruments includes: ------CORRECT ANSWER----- ----------ALL OF THE ABOVE --> Rinse them in fresh water at the end of each diving day. Have them inspected and serviced annually by a qualified technician. Do not subject them to extreme temperature changes. Three main types of __ are back floatation, jacket, and horse collar ------ CORRECT ANSWER---------------BCs Essential features found on all BCs are: ------CORRECT ANSWER----------- ----ALL OF THEE ABOVE --> power inflator mechanism overpressure relief valve inflator/deflator hose You should rinse your BC internally because _____ inside your BC can cause damage. ------CORRECT ANSWER---------------ALL OF THE ABOVE --> salt water dirty water chlorinated water The most important feature of the weight belt is ___. ------CORRECT ANSWER---------------quick release A _____ compensates for the compression of a wetsuit as you descend underwater ------CORRECT ANSWER---------------compensating weight belt
Weighting systems are used by the diver primarily to ------CORRECT ANSWER---------------Offset the positive buoyancy created by the wet suit A ___ used undergarments for insulation ------CORRECT ANSWER---------- -----dry suit A ____ is made from foam neoprene ------CORRECT ANSWER--------------- wetsuit You do not need special training to use a dry suit. T or F ------CORRECT ANSWER---------------False The primary purpose of the exposure suit is to ------CORRECT ANSWER--- ------------Preserve body heat during dives A ____ is suitable for warm, tropical diving. ------CORRECT ANSWER------- --------dive skin the dive knife is used primarily as a _____ for digging, cutting, pounding, and prying ------CORRECT ANSWER---------------tool You should record all dives in your logbook because ____. ------CORRECT ANSWER---------------ALL OF THE ABOVE --> you might be required to show proof of experience there are laws in parts of the world that require you to log dives dive operators may review your logbook before they will provide services
