2026/2027 || SCUBA DIVING & UNDERWATER SAFETY
FUNDAMENTALS VERIFIED QUESTIONS & ACCURATE
ANSWERS || GRADED A+
142 QUESTIONS AND ANSWERS
When selecting a face mask, most important thing to consider is - CORRECT
ANSWER - proper seal and fit
When buying or renting equipment for diving the most important consideration is -
CORRECT ANSWER - it fits your body
Open heel fins are usually the fins of choice for scuba divers because: -
CORRECT ANSWER - They may be used in a wide variety of environmental
conditions
factors that can affect the breathing ease of a snorkel are: - CORRECT
ANSWER - Length and Diameter
Snorkels over 15 inches in length are not recommended primarily because: -
CORRECT ANSWER - They have too much dead air space
Diving equipment should be: - CORRECT ANSWER - rinsed thoroughly,
dried and stored in a cool place
,Engraved markings on scuba tanks include - CORRECT ANSWER - Date of
hydrostatic test, serial number, type of material
The ____ line is the direction of travel line on the compass - CORRECT
ANSWER - Lubber
You should have your regulator serviced by a certified repair technician: -
CORRECT ANSWER - As recommended by the manufacturer
When rinsing a regulator it is best to: - CORRECT ANSWER - Leave the
regulator attached to the tank or have the dust cap in place
The stage of the regulator which reduces working tank pressure to intermediate
pressure is: - CORRECT ANSWER - The first stage
Scuba tanks should always have some pressure in them to prevent: - CORRECT
ANSWER - Moisture from entering
Two types of materials that scuba tanks are made from are steel and _________. -
CORRECT ANSWER - aluminum
Hydrostatic and visual inspection standards are different around the world.Consult
your local NAUI facility to learn about the regulations in your area - CORRECT
ANSWER - True
, Proper maintenance of instruments includes - CORRECT ANSWER - Rins,
inspect no etreme temp (all the above)
A diving watch must be able to withstand pressure and measure _____. -
CORRECT ANSWER - Elapsed time
A _____ calculates your remaining allowable bottom time while diving. -
CORRECT ANSWER - Dive computer
You should rinse your BC internally because _____ inside your BC can cause
damage. - CORRECT ANSWER - Salt water, dirty water, chlorinated (all the
above)
Three main types of ____ are black floatation, jacket, and horse collar -
CORRECT ANSWER - BCs
Essential features found on all BCs are - CORRECT ANSWER - Power
inflator, relief valve, inflator (all the above)
Weighting systems are used by the diver primarily to: - CORRECT ANSWER
- Offset the positive buyancy created by the wet suit