At a minimum, while diving, most dive computers display: - 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? - ANSWER Tempered or safety glass
Snorkels over 15 inch...
NAUI SCUBA exam|| 85
QUESTIONS|| CORRECT 100%
At a minimum, while diving, most dive computers display: - 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? - ANSWER
Tempered or safety glass
Snorkels over 15 inches (38 centimeters) in length are not recommended primarily because: - ANSWER
They have too much dead air space.
When buying or renting equipment for diving, the most important consideration is: - ANSWER Its fit on
your body.
When rinsing a regulator it is best to: - 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: - 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: - 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: - ANSWER 5 years
The most important functional feature of a weight belt or weight system is: - ANSWER A means for
ditching the weights immediately with one hand.
, The primary purpose of the exposure suit is to: - ANSWER Preserve body heat during dives.
You should have your regulator serviced by a certified repair technician: - ANSWER At least once per
year.
The absolute pressure in the ocean at 53 feet (16.15 m) is: - ANSWER 2.6 atmospheres absolute (2.6
bar).
If a diver's surface air consumption rate is 30 psi per minute (2.1 bar per minute), what would be his/her
consumption rate at 66 feet (20.11 m) of seawater? - ANSWER 90 psi per minute (6.2 bar per minute).
A depth that is equivalent to one atmosphere in the ocean is equal to _________ feet (meters) in
seawater and _________ feet (meters) in freshwater. - ANSWER 33; 34 (10.06;10.36)
Two methods of measuring air pressure are BAR or: - ANSWER PSI
Which of the following describes the term "positive buoyancy"? - ANSWER An object displaces an
amount of water weighing more than itself.
Three factors that adversely affect a diver's air consumption rate are: - ANSWER Large physical size, high
anxiety, poor fitness level.
Pressure in the middle ear is equalized through a part of the body called the: - ANSWER Eustachian tube
A scuba diver tends to become dehydrated while diving due to: - ANSWER Moisturizing dry inhaled air.
Symptoms of Nitrogen Narcosis are similar to: - ANSWER Alcohol intoxication.
A diver's inability to equalize his/her ears during descent could cause: - ANSWER Ear squeeze
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