NAUI ADVANCED SCUBA DIVER
LATEST ACTUAL EXAM 2025
QUESTIONS AND DETAILED CORRECT
ANSWERS (VERIFIED ANSWERS)
a good reason to take the NAUI Advanced Scuba Diver
Course is Correct Answer to increase your diving abilities,
to get oriented to new dive sites, you recently moved into
a new diving area
Three factors that adversely affect a diver's air
consumption rate are: Correct Answer Large physical size,
high anxiety, poor fitness level.
Pressure in the middle ear is equalized through a part of
the body called the: Correct Answer Eustachian tube
A scuba diver tends to become dehydrated while diving
due to: Correct Answer Moisturizing dry inhaled air.
Symptoms of Nitrogen Narcosis are similar to: Correct
Answer Alcohol intoxication.
A diver's inability to equalize his/her ears during descent
could cause: Correct Answer Ear squeeze
An irregular breathing pattern (skip breathing) while diving
will possibly cause: Correct Answer Carbon dioxide
excess.
,Generally, for maximum efficiency, your breathing should
be: Correct Answer Slightly slower and deeper than you
normally breathe.
To prevent air embolism, a diver should: Correct Answer
Breathe normally at all times during ascent and never hold
his/her breath.
A diver with blood and mucous in his/her mask upon
surfacing will most likely have: Correct Answer Sinus
squeeze
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.
A symptom of hypothermia which indicates that a diver
should terminate his/her dive is: Correct Answer Shivering
At a minimum, while diving, most dive computers display:
Correct Answer Maximum depth, current depth, actual
bottom time, remaining allowable bottom time.
Which of the following is an essential feature to consider
when selecting a diving mask? Correct Answer Tempered
or safety glass
Snorkels over 15 inches (38 centimeters) in length are not
recommended primarily because: Correct Answer They
have too much dead air space.
,When buying or renting equipment for diving, the most
important consideration is: Correct Answer Its fit on your
body.
When rinsing a regulator it is best to: Correct Answer
Leave the regulator attached to the tank or have the dust
cap in place.
Three features that are common to all buoyancy control
devices are: Correct Answer An overpressure relief valve,
inflation/deflation hose, low pressure inflator hose.
Three types of alternate air sources that are in common
use today are: Correct Answer Octopus rigs, completely
redundant systems, an integrated regulator into the BCD
inflation/deflation hose.
According to the United States Department of
Transportation regulations, scuba tanks must be
hydrostatically tested every: Correct Answer 5 years
The most important functional feature of a weight belt or
weight system is: Correct Answer A means for ditching the
weights immediately with one hand.
The primary purpose of the exposure suit is to: Correct
Answer Preserve body heat during dives.
You should have your regulator serviced by a certified
repair technician: Correct Answer At least once per year.
, The stage of the regulator which reduces tank pressure is:
Correct Answer first
Two types of materials that scuba tanks are made from
are steel and _________. Correct Answer aluminum
The _________ line is the direction of travel line on the
compass. Correct Answer lubber
The dive knife is used primarily as a _________ for
digging, cutting, pounding and prying. Correct Answer
Tool
Markings on scuba tanks include: Correct Answer Date of
hydrostatic test, serial number, type of material.
Atmospheric pressure at sea level is: Correct Answer 14.7
pounds per square inch/1.0 atmosphere absolute (1.01
bar).
A sealed balloon filled with air that has a volume of 4 liters
at 99 feet of seawater (30.2 m) will have a volume of
____________ liters at 33 feet of seawater (10.1 m).
Correct Answer 8 liters
The weight of freshwater is: Correct Answer 62.4 pounds
per cubic foot (1000 kg/m3).
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