NAUI OPEN WATER ELEARNING SCUBA
DIVER CERTIFICATION EXAM | NEWEST
ACTUAL EXAM COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS
GRADED A+ | 100% PASS | 2025 UPDATE!
The NAUI RGBM dive tables are for both air and nitrox, and can be used
for elevations up to 3048m (10,000 feet) above sea level. T or F - ✔✔✔
Correct Answer > True
A depth that is equivalent to one atmosphere in ocean is equal to ____
in sea water and ____ in fresh water - ✔✔✔ Correct Answer > 10 m
(33 feet) ; 10.4 m (34 feet)
Two methods of measuring air pressure are BAR or: - ✔✔✔ Correct
Answer > pounds per square inch
If you dive deeper than approximately 6 meters (20 feet) and then
ascend, the pressure change might be sufficient for bubbles to form if
you have absorbed enough nitrogen. T or F - ✔✔✔ Correct Answer >
True
,A NAUI open water scuba diver should not dive deeper than 18 meters
(or 60 feet). T or F - ✔✔✔ Correct Answer > True
For any given divem you will use only one of the RGBM tables, but it is
essential that you be aware of and use the appropriate table. T or F -
✔✔✔ Correct Answer > True
if a divers surface air consumption rate is 1.72 bar (25 psi) per minute,
what would be the consumption rate at 20 meters (66 feet) of
seawater? - ✔✔✔ Correct Answer > 5.16 bar per minute (75 psi per
minute)
a sealed balloon filled with air that has volume of 6 cubic inches at 99
feet will have a volume of _____ cubic inches at 33 feet - ✔✔✔
Correct Answer > 12
What type of pressure is defined as gauge (water) pressure plus
atmospheric (air) pressure)? - ✔✔✔ Correct Answer > Absolute
Atmospheric pressure at sea level is: - ✔✔✔ Correct Answer > 1.0
bar / 14.7 pounds per square inch / 1.0 atmospheric absolute
Which gas law best explains diving medical problems such as ear and
sinus squeeze? - ✔✔✔ Correct Answer > Boyle's law
, The absolute pressure in the ocean at 16 meters (53 feet) is: - ✔✔✔
Correct Answer > 2.6 atmospheres absolute
Sea water weighs __ kg per liter or ___ pounds per cubic foot - ✔✔✔
Correct Answer > 1..0
Pressure in the middle ear is equalized through a part of the body
called the: - ✔✔✔ Correct Answer > eustachian tube
A diver's inability to equalize his/her ears during ascent could cause: -
✔✔✔ Correct Answer > a block or reverse block
A diver with blood and mucous in his/her mask upon surfacing will most
likely have - ✔✔✔ Correct Answer > sinus squeeze
To prevent air embolism, a diver should - ✔✔✔ Correct Answer >
Breathe normally at all times during ascent and never hold his/her
breath
The three general types of injury resulting from lung overexpansion are
air embolism, pneumothorax, and ___ - ✔✔✔ Correct Answer >
tissue emphysema
An irregular breathing pattern (skip breathing) while diving will possibly
cause: - ✔✔✔ Correct Answer > carbon dioxide excess
DIVER CERTIFICATION EXAM | NEWEST
ACTUAL EXAM COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS
GRADED A+ | 100% PASS | 2025 UPDATE!
The NAUI RGBM dive tables are for both air and nitrox, and can be used
for elevations up to 3048m (10,000 feet) above sea level. T or F - ✔✔✔
Correct Answer > True
A depth that is equivalent to one atmosphere in ocean is equal to ____
in sea water and ____ in fresh water - ✔✔✔ Correct Answer > 10 m
(33 feet) ; 10.4 m (34 feet)
Two methods of measuring air pressure are BAR or: - ✔✔✔ Correct
Answer > pounds per square inch
If you dive deeper than approximately 6 meters (20 feet) and then
ascend, the pressure change might be sufficient for bubbles to form if
you have absorbed enough nitrogen. T or F - ✔✔✔ Correct Answer >
True
,A NAUI open water scuba diver should not dive deeper than 18 meters
(or 60 feet). T or F - ✔✔✔ Correct Answer > True
For any given divem you will use only one of the RGBM tables, but it is
essential that you be aware of and use the appropriate table. T or F -
✔✔✔ Correct Answer > True
if a divers surface air consumption rate is 1.72 bar (25 psi) per minute,
what would be the consumption rate at 20 meters (66 feet) of
seawater? - ✔✔✔ Correct Answer > 5.16 bar per minute (75 psi per
minute)
a sealed balloon filled with air that has volume of 6 cubic inches at 99
feet will have a volume of _____ cubic inches at 33 feet - ✔✔✔
Correct Answer > 12
What type of pressure is defined as gauge (water) pressure plus
atmospheric (air) pressure)? - ✔✔✔ Correct Answer > Absolute
Atmospheric pressure at sea level is: - ✔✔✔ Correct Answer > 1.0
bar / 14.7 pounds per square inch / 1.0 atmospheric absolute
Which gas law best explains diving medical problems such as ear and
sinus squeeze? - ✔✔✔ Correct Answer > Boyle's law
, The absolute pressure in the ocean at 16 meters (53 feet) is: - ✔✔✔
Correct Answer > 2.6 atmospheres absolute
Sea water weighs __ kg per liter or ___ pounds per cubic foot - ✔✔✔
Correct Answer > 1..0
Pressure in the middle ear is equalized through a part of the body
called the: - ✔✔✔ Correct Answer > eustachian tube
A diver's inability to equalize his/her ears during ascent could cause: -
✔✔✔ Correct Answer > a block or reverse block
A diver with blood and mucous in his/her mask upon surfacing will most
likely have - ✔✔✔ Correct Answer > sinus squeeze
To prevent air embolism, a diver should - ✔✔✔ Correct Answer >
Breathe normally at all times during ascent and never hold his/her
breath
The three general types of injury resulting from lung overexpansion are
air embolism, pneumothorax, and ___ - ✔✔✔ Correct Answer >
tissue emphysema
An irregular breathing pattern (skip breathing) while diving will possibly
cause: - ✔✔✔ Correct Answer > carbon dioxide excess
