Aaus Test - Part 2

56 Questions | Total Attempts: 113

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Aaus Test - Part 2 - Quiz

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.


Questions and Answers
  • 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

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