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.
- 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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