Aaus Test - Part 2

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Aaus Test - Part 2
All SNI divers (adults and 'nauts) must complete the AAUS test with a passing grade (80% or higher) to participate in SNI open water dives. Part 2 of the AAUS Test includes 56 multiple choice questions about diving physiology, diving environment, diving skills, emergency skills, and the SNI diving program. This is a TIMED CLOSED BOOK test. You have 60 minutes to complete it.

  
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  • 1. 
    Breathing dry air, a scuba diver tends to become dehydrated while diving due to:
    • A. 

      Excessive perspiration

    • B. 

      Moisturizing dry inhaled air

    • C. 

      Saltwater absorbing moisture from the skin

    • D. 

      The extreme amount of energy expended during a dive


  • 2. 
    Pressure in the middle ear is equalized through a part of the body called the:
    • A. 

      Vascular canal

    • B. 

      Intravascular tube

    • C. 

      Eustachian tube

    • D. 

      Semi-circular canal


  • 3. 
    Symptoms of nitrogen narcosis are similar to:
    • A. 

      Caisson's disease

    • B. 

      Asphyxia

    • C. 

      Diver's disease

    • D. 

      Alcoholic intoxication


  • 4. 
    If your dive buddy complains to you about having aching pain in his/her shoulder one hour after the dive, you might suspect:
    • A. 

      Arterial gas embolism

    • B. 

      Decompression sickness

    • C. 

      Nitrogen narcosis

    • D. 

      Hypothermia


  • 5. 
    The ______________ in the air you are breathing limits the time you can stay at depth
    • A. 

      Water vapor

    • B. 

      Nitrogen

    • C. 

      Oxygen

    • D. 

      All of the above


  • 6. 
    An irregular breathing pattern (skip breathing) while diving will possibly cause:
    • A. 

      Anorexia nervosa

    • B. 

      Carbon dioxide excess

    • C. 

      Asphexia

    • D. 

      Pneumorthorax


  • 7. 
    The onset of nitrogen narcosis is characterized by:
    • A. 

      A clear thought process

    • B. 

      Impairment of thought

    • C. 

      The inability to sense pleasure

    • D. 

      Increased precision in motor skill function


  • 8. 
    Generally, for maximum efficiency, your breathing should be:
    • A. 

      Slightly faster and shallower than you normally breathe

    • B. 

      The same as you normally breathe

    • C. 

      Slightly slower and shallower than you normally breathe

    • D. 

      Slightly slower and deeper than you normally breathe


  • 9. 
    Which symptom is reflective of oxygen toxicity?
    • A. 

      Euphoria

    • B. 

      Convulsions

    • C. 

      Bright, red skin

    • D. 

      Decreased body core temperature


  • 10. 
    Physical damage to the body resulting from a direct change in pressure is called:
    • A. 

      Edema

    • B. 

      Hemorrhage

    • C. 

      Thrombosis

    • D. 

      Barotrauma


  • 11. 
    Smoking cigarettes affects a diver in which of the following ways?
    • A. 

      Increases the level of carbon monoxide in the blood.

    • B. 

      Increases tolerance for exercise.

    • C. 

      Lowers of the number of beats per minute of the heart.

    • D. 

      Provides greater resistance to decompression sickness.


  • 12. 
    A diver with blood and mucous in his/her mask upon surfacing will most likely have:
    • A. 

      Lung squeeze/block

    • B. 

      Ear squeeze/block

    • C. 

      Sinus squeeze/block

    • D. 

      Air embolism


  • 13. 
    To prevent air embolism, a diver should:
    • A. 

      Breathe 100 percent oxygen during scuba dives.

    • B. 

      Decompress correctly.

    • C. 

      Breathe compressed air only.

    • D. 

      Breathe normally at all times during ascent and never hold his/her breath.


  • 14. 
    What is the maximum safe ascent rate recommended for scientific diving and required for use of the NAUI dive tables?
    • A. 

      90 feet per minute

    • B. 

      30 feet per minute

    • C. 

      70 feet per minute

    • D. 

      60 feet per minute


  • 15. 
     Which of the following is the point at which a sudden change in water temperature occurs?
    • A. 

      A pinnacle

    • B. 

      A thermocline

    • C. 

      A halocline

    • D. 

      An upwelling


  • 16. 
    Examples of natural navigation aids divers may use during dives include:
    • A. 

      Ripple marks in the sand.

    • B. 

      Sun brightness/available light.

    • C. 

      Bottom contours.

    • D. 

      All of the above.


  • 17. 
    When waves break on shore and the backrush is funneled through a narrow opening, the condition is known as:
    • A. 

      A feeder current

    • B. 

      Undertow

    • C. 

      A rip current

    • D. 

      The Gulf Stream


  • 18. 
    __________________is the underwater movement of water caused by wave action that you will experience when diving in areas close to shore.
    • A. 

      Surf

    • B. 

      Tide

    • C. 

      Tidal current

    • D. 

      Surge


  • 19. 
    The horizontal boundary between waters of differing salinity is defined as:
    • A. 

      A halocline

    • B. 

      A thermocline

    • C. 

      A thermal zone

    • D. 

      A reverse thermocline


  • 20. 
    If the water conditions are reasonable to make a beach dive, all of the following procedures are suggested EXCEPT:
    • A. 

      Having your buoyancy compensator partially inflated for slight positive buoyancy.

    • B. 

      Being fully equipped.

    • C. 

      Getting as close to the water’s edge as possible after timing the sets and lulls to match your entry with the smallest waves.

    • D. 

      Entering the water as slowly as possible immediately after a wave breaks, getting beyond the surf zone quickly, before the next wave breaks.


  • 21. 
    Almost all injuries from aquatic life are caused by _________ action on the part of the animal.
    • A. 

      Defensive

    • B. 

      Offensive

    • C. 

      Aggressive

    • D. 

      Planned


  • 22. 
    Scyphozoans, or true jellyfish, possess stinging cells within their tentacles called ____________.
    • A. 

      Cilia

    • B. 

      Thorns

    • C. 

      Barbs

    • D. 

      Nematocysts


  • 23. 
    The distance between successive wave crests is defined as:
    • A. 

      Wave period

    • B. 

      Wave sets

    • C. 

      Wave length

    • D. 

      Swell period


  • 24. 
    The first aid for sea stings, such as those from jellyfish is:
    • A. 

      The application of a stinging neutralizing agent.

    • B. 

      Applying a tourniquet.

    • C. 

      Wrapping the injured site tightly with a bandage.

    • D. 

      To do nothing.


  • 25. 
    If you are diving wearing an exposure suit, you should _________to safely control buoyancy as you descend.
    • A. 

      Do nothing

    • B. 

      Add air to your buoyancy device

    • C. 

      Let air out of your buoyancy device

    • D. 

      Add weight to your weight belt


  • 26. 
    If it is suspected that the air in a tank is contaminated due to its smell or taste:
    • A. 

      Do not use the tank and immediately call the dive shop that filled the tank so they can investigate the problem.

    • B. 

      Have your buddy keep a close watch on you throughout the dive.

    • C. 

      Immediately call the dive shop that filled the tank and check on the compressor maintenance schedule before using the tank.

    • D. 

      Go ahead and use the tank at depths of less than 30 feet.


  • 27. 
    A thick wetsuit (e.g., 5 mm or 7 mm):
    • A. 

      Will require more weight to be neutral near the surface, and more air in the buoyancy compensation device (BCD) at depth to remain neutral, than a thinner wetsuit.

    • B. 

      Will lose positive buoyancy as it ages (due to crushing of the neoprene), requiring the diver to use less weight for neutral buoyancy as the suit gets older.

    • C. 

      Can be useful even in tropical areas, but is necessary for safely diving in cooler water temperatures.

    • D. 

      All of the above.


  • 28. 
    Immediately upon reaching the dive site, you should:
    • A. 

      Check your equipment.

    • B. 

      Suit up.

    • C. 

      Discuss the dive plan with your buddy.

    • D. 

      Observe conditions.


  • 29. 
    No dive plan is complete without:
    • A. 

      A malfunction in equipment.

    • B. 

      A list of all the dives you have completed.

    • C. 

      A good contingency plan.

    • D. 

      A mean Chapter Diving Safety Officer.


  • 30. 
    Completing any given scuba certification course makes you knowledgeable and skillful enough to dive safely in or at:
    • A. 

      Closed compartments in shipwrecks.

    • B. 

      Water with conditions similar to those in which you were trained.

    • C. 

      Depths deeper than 100 feet.

    • D. 

      Anywhere


  • 31. 
    If during a dive you and your buddy become separated, you should:
    • A. 

      Return to where you last saw him/her and search.

    • B. 

      Go up a few feet and search until you locate his/her exhaust bubbles.

    • C. 

      Remain where you are until he/she finds you.

    • D. 

      Spend no more than one minute looking and then safely surface.


  • 32. 
    A dive team conducting a night dive should have a total of how many lights (minimum) between them?
    • A. 

      1

    • B. 

      2

    • C. 

      4

    • D. 

      5


  • 33. 
    It is recommended that a dive team diving from an anchored boat begin their dive:
    • A. 

      With the prevailing current.

    • B. 

      At low tide.

    • C. 

      Against the prevailing current.

    • D. 

      With negative buoyancy.


  • 34. 
    It is recommended that a dive team diving from an anchored boat have
    • A. 

      Gear with matching colors

    • B. 

      High anxiety and small physical size

    • C. 

      Resistance to pain

    • D. 

      A trail line 30 meters long with a buoy at the end


  • 35. 
    Planning safe, successful, and fun dives requires:
    • A. 

      Good weather.

    • B. 

      Care and attention to detail.

    • C. 

      Warm water and no hazardous marine life.

    • D. 

      A dive computer.


  • 36. 
    When conducting a buoyancy check, neutral buoyancy or proper weighting is attained when, with a normal breath, you float at or near:
    • A. 

      Waist level.

    • B. 

      Shoulder level.

    • C. 

      Eye level.

    • D. 

      Instead of floating, you sink slowly.


  • 37. 
    Decompression Sickness (DCS) is usually caused by some combination of exceeding recommended time and depth exposure limits along with a possible rapid ascent rate.  Some Type II DCS signs/symptoms are characterized by:
    • A. 

      Dizziness, loss of bowel/bladder control, tingling in extremities.

    • B. 

      Burning skin, euphoria.

    • C. 

      Aching in the muscles and joints

    • D. 

      None of the above.


  • 38. 
    ______________ is a worldwide emergency network of hyperbaric chambers and diving physicians.
    • A. 

      U.S. Coast Guard (USCG)

    • B. 

      Divers Alert Network (DAN)

    • C. 

      National Oceanic & Atmospheric Administration (NOAA)

    • D. 

      University of South Florida (USF)


  • 39. 
    A diver experiencing anxiety should:
    • A. 

      Ascend immediately

    • B. 

      Stop, rest, and breathe slowly and deeply until they recover

    • C. 

      Descend and continue the dive

    • D. 

      Swim at maximum pace toward the beach or boat


  • 40. 
    A diver experiencing Arterial Gas Embolism (AGE) usually exhibits signs and symptoms within 5 minutes of surfacing from a dive. These signs/symptoms may include:
    • A. 

      Severe headache, dizziness, shortness of breath.

    • B. 

      Pain in a joint area

    • C. 

      Euphoria, skin rash.

    • D. 

      Pain in the sinuses, nausea.


  • 41. 
    Preventing a diving accident begins long before anyone enters the water.  Important elements to consider prior to any dive in order to minimize the risk of an accident include:
    • A. 

      Site selection, environmental conservation, local thermocline.

    • B. 

      Depth, duration, activity, and buddy team ability to perform the anticipated dive.

    • C. 

      Concern for the evening social schedule, buddy selection, equipment color/appearance.

    • D. 

      All of the above.


  • 42. 
    Which of the following physical factors can make you incapable of sustaining the efforts sometimes demanded when participating in recreational diving?
    • A. 

      Inadequate sleep.

    • B. 

      A recent head cold.

    • C. 

      Recent ingestion of drugs (medicine, alcohol, narcotics).

    • D. 

      All of the above.


  • 43. 
    A diver on the surface waving his/her hand overhead and thrashing violently indicates:
    • A. 

      Distress.

    • B. 

      Danger.

    • C. 

      Out of air.

    • D. 

      Euphoria.


  • 44. 
    In an out-of-air situation at depths shallower than 33 feet of seawater (10 m), if making a shared-air or redundant scuba ascent is not possible, the procedure of choice is:
    • A. 

      Buddy breathing ascent.

    • B. 

      Breath holding ascent.

    • C. 

      Rapid ascent.

    • D. 

      Emergency swimming ascent.


  • 45. 
    A diver displaying signs of in-water distress often includes the following signs:
    • A. 

      Calm, relaxed behavior and agitated behavior.

    • B. 

      Agitated behavior and buoyancy problems.

    • C. 

      Excessive bubbles exhaled from the regulator and relaxing at the surface post-dive.

    • D. 

      No buoyancy problems and relaxed behavior.


  • 46. 
    Four main actions you should consider in giving first aid for diving accidents are:
    • A. 

      Give mouth-to-mouth, call the Coast Guard, keep victim warm, talk to them.

    • B. 

      Treat for shock, call a lifeguard, deliver 100% oxygen, give liquids.

    • C. 

      Maintain basic life support, call for help, treat for shock, deliver 100% oxygen.

    • D. 

      Tilt victim's feet up at 50 degrees, deliver oxygen, call a doctor, encourage victim.


  • 47. 
    One common sign that accompanies Type I Decompression Sickness is:
    • A. 

      Sinus headache.

    • B. 

      Ear pain.

    • C. 

      Euphoria.

    • D. 

      Deep, joint-centered aching or pain.


  • 48. 
    When a diver is distressed at the surface, he or she should take the following action:
    • A. 

      Descend, make a decompression stop, relax and gain control of breathing.

    • B. 

      Thrash wildly at the surface, deflate his/her buoyancy compensator, and continue diving.

    • C. 

      Stop and signal their buddy, establish positive buoyancy, relax and gain control of breathing.

    • D. 

      Ditch their weight belt or weight system, inflate their buoyancy compensator as full as possible, relax and gain control of breathing.


  • 49. 
    Continued loss of body heat in cold water will produce:
    • A. 

      Confusion.

    • B. 

      Progressive immobility.

    • C. 

      Insensibility to pain.

    • D. 

      All of the above.


  • 50. 
    SCUBAnauts International (SNI) is an organizational member of AAUS, which is an acronym for:
    • A. 

      The Association for Academic Underwater Scubadiving.

    • B. 

      The American Academy of Underwater Sciences.

    • C. 

      The Academy of American Underwater Scientists.

    • D. 

      The Academic Association of Underwater Scientists.


  • 51. 
    SNI diving regulations require which of the following to maintain status as a current qualified diver?
    • A. 

      At least 6 dives in the last 12 months, and at least one dive to 100 fsw (30 m).

    • B. 

      At least 12 dives in the last 12 months, a current approved diving physical, and at least one dive to your maximum level of qualification.

    • C. 

      A certification card (a.k.a., c-card) for open water diver and advanced open water diver.

    • D. 

      None of the above, once you are an SNI diver, you can always dive with SNI.


  • 52. 
    Which of the following is true of the SNI diver qualification rating system (DIT, D-30, D-60, D-100)?
    • A. 

      It is not a rank system, and divers may move up or down in the rating based on current skills.

    • B. 

      A diver with a D-100 rating is a better diver than a diver with a D-60 rating.

    • C. 

      Every SNI diver should expect to be a D-100 diver when they get enough experience.

    • D. 

      Once you reach a certain qualification level, you can never have your qualification reduced.


  • 53. 
    With SNI, the ultimate diving authority rests with the:
    • A. 

      President of SNI

    • B. 

      SNI Diving Safety Officer (DSO)

    • C. 

      Diving Control Board

    • D. 

      Diver in Charge (DIC)


  • 54. 
    According to SNI regulations, the Diver in Charge (DIC):
    • A. 

      Must be an adult who is a Divemaster, Assistant Instructor, Instructor, or in training for those certifications.

    • B. 

      Does not have to be in the water for every dive as long as they remain in a supervisory capacity.

    • C. 

      Is designated by the Chapter Diving Safety Officer or SNI DSO as the on-scene leader for a diving operation.

    • D. 

      All of the above.


  • 55. 
    Dive logs are essential to safety and record keeping. On multiday expeditions, the team dive log:
    • A. 

      Must be available on request within 24 hrs.

    • B. 

      Is due within two weeks after the end of the trip.

    • C. 

      Must be kept in the open and completed by every diver immediately after each dive.

    • D. 

      Must always use PADI dive tables to record the repetitive group (RG).


  • 56. 
    SNI divers must maintain current certifications in:
    • A. 

      Rescue Diver and Advanced Open Water Diver.

    • B. 

      Underwater scientific techniques.

    • C. 

      Equipment and cylinder maintenance.

    • D. 

      CPR, First Aid, and Emergency Oxygen Provider.


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