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NAUI Exam Questions with correct Answers (Graded A)
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NAUI Exam Questions with correct Answers
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NAUI Exam Questions with correctAnswers
When selecting a face mask the most important things to consider our proper ____ and
_____ - Answer -Fit and comfort
Snorkels over 15 inches 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
_______ on your body - Answer -Fit
When rinsing a regulator it is best to leave the regulator ______to the tank or have the
dust cap_____ - Answer -Attached, closed
Diving equipment should be _____ thoroughly, ____, and _____ in a cool place -
Answer -Rinsed, dried, stored
Scuba tank should always have some pressure on them to prevent ______from
entering - Answer -Water / moisture
According to the DOT regulations, scuba tanks must be hydrostatically tested every
______ years - Answer -5
Open heel fins are usually the fins of choice for scuba divers because____ - Answer -
They can be used in a wide variety of conditions
The primary purpose of the exposure suit is to preserve ______ during Dives - Answer -
Body heat
Weighting systems are used by the diver primarily to offset the ______ buoyancy
created by the wetsuit - Answer -Positive
You should have your regulator serviced by a certified repair technician at least _____
per year - Answer -One time
The stage of the regulator which reduces the tank pressure is the ______stage -
Answer -First
, Two types of material that scuba tanks are made of our Steel and _____ - Answer -
Aluminum
The ______ line is the direction of travel line on the compass - Answer -Lubber
The dive knife is used primarily as a _____ for digging, cutting, pounding and prying -
Answer -Tool
Stamped, engraved, markings on scuba tanks include date of _____, serial number and
type of blank - Answer -hydrostatic testing, material (A= aluminum, AA = steel)
Atmospheric pressure at sea level is _____ pounds per square inch for _____
atmosphere absolute - Answer -14.7 pounds, 1 atmosphere
A sealed balloon filled with air that has a volume of 6 cubic inches at 99 feet will have a
volume of ______ cubic inches at 33 feet - Answer -12
Sea waterways ____ pounds per cubic foot - Answer -64.1
The gas law that best explains diving medical problems such as ear and sinus squeeze
is - Answer -Boyle's Law
Because refractions, objects underwater appear ____ and ______ when the diver is
looking through his / her mask - Answer -Larger, closer
When the pressure of nitrogen is balanced between the air in your body you are at a
state of ______ - Answer -Equilibrium
A diver's body heat is lost through conduction at a rate of approximately _____ times
more rapidly than in air - Answer -25 times
The type of pressure defined as gauge for water pressure plus atmospheric pressure is
______ - Answer -Absolute pressure
The absolute pressure in the ocean at 53 feet is ______ atmospheres absolute -
Answer -2.61
If a divers Surface air consumption rate is 25 psi per minute, what would be the
consumption rate at 66 feet of seawater - Answer -75 PSI / minute
A depth that is equivalent to one atmosphere in the ocean is equal to _____ feet in the
seawater and _____feet in freshwater - Answer -33 seawater, 34 freshwater
Two methods of measuring air pressure are BAR or _____ - Answer -Pounds per
square inch
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