NAUI: Open Water Scuba Diver Exam
with Complete Solutions
When selecting a face mask, the most important thing to consider is: - ANSWER-Proper
seal and fit
A diver on the surface waving his/her hand overhead and thrashing violently indicates: -
ANSWER-Distress
Atmospheric pressure at sea level is: - ANSWER-1.0 bar / 14.7 pounds per square
inch / 1.0 atmosphere
Which of the following limits should be established prior to every scuba dive? -
ANSWER-Maximum bottom time, maximum depth, minimum air pressure
Because of refraction, objects underwater appear _________ and _________ when the
diver is looking through their mask. - ANSWER-Larger; closer
The last thing to check before making a giant stride or any water entry is that: -
ANSWER-Area below is clear
According to the NAUI dive tables dives to less than 6m (20 feet): - ANSWER-Are
considered as 6m (20 foot) dives
It is recommended that a dive team diving from an anchored boat begin their dive: -
ANSWER-against the prevailing current
Pressure in the middle ear is equalized through a part of the body called the: -
ANSWER-Eustachian tube
To relieve a cramp in the calf: - ANSWER-Bend the toe of the fin toward the knee to
stretch the muscle
Scuba tanks should always have some pressure in them to prevent: - ANSWER-
Moisture from entering
The predictable daily rise and fall of the ocean at a single point is called: - ANSWER-
The tide
Engraved markings on scuba tanks include: - ANSWER-Date of hydrostatic test, serial
number, type of material
, Engraved markings on scuba tanks include: - ANSWER-Date of hydrostatic test, serial
number, type of material
If you are diving wearing an exposure suit, you should _____ to safely control buoyancy
as you descend. - ANSWER-add air to your buoyancy device
Continued loss of body heat in cold water will produce: - ANSWER-Muscle cramps,
Progressive immobility, Insensibility to pain (All of the above)
When rinsing a regulator it is best to: - ANSWER-Leave the regulator attached to the
tank or have the dust cap in place
For optimum no-decompression bottom times, plan repetitive dives so that each
successive dive is to _________ depth. - ANSWER-a shallower
If it is suspected that the air in a tank is contaminated due to its smell or taste: -
ANSWER-Do not use the tank and immediately call the dive shop that filled the tank so
they can investigate the problem
If your dive buddy complains to you about having aching pain in his/her shoulder one
hour after the dive, you might suspect: - ANSWER-Decompression sickness
(USE DIVE AIR TABLE 2) According to NAUI, a repetitive dive is defined as more than
one dive within a period of _________ hours. - ANSWER-24
A symptom of carbon monoxide poisoning is often: - ANSWER-Headache
You should have your regulator serviced by a certified repair technician: - ANSWER-As
recommended by the manufacturer
Sea water weighs _____ kilograms per liter or _____ pounds per cubic foot. -
ANSWER-1..0
Four main actions you should consider in giving first aid for diving accidents are: -
ANSWER-Maintain basic life support, call for help, treat for shock, deliver 100% oxygen
The first color lost in the spectrum upon descent during a dive is _____. - ANSWER-red
A regular breathing pattern while diving would be: - ANSWER-Slightly slower and
deeper than you normally breathe
Two types of materials that scuba tanks are made from are steel and _________. -
ANSWER-aluminum
Two methods of measuring air pressure are BAR or: - ANSWER-pounds per square
inch
with Complete Solutions
When selecting a face mask, the most important thing to consider is: - ANSWER-Proper
seal and fit
A diver on the surface waving his/her hand overhead and thrashing violently indicates: -
ANSWER-Distress
Atmospheric pressure at sea level is: - ANSWER-1.0 bar / 14.7 pounds per square
inch / 1.0 atmosphere
Which of the following limits should be established prior to every scuba dive? -
ANSWER-Maximum bottom time, maximum depth, minimum air pressure
Because of refraction, objects underwater appear _________ and _________ when the
diver is looking through their mask. - ANSWER-Larger; closer
The last thing to check before making a giant stride or any water entry is that: -
ANSWER-Area below is clear
According to the NAUI dive tables dives to less than 6m (20 feet): - ANSWER-Are
considered as 6m (20 foot) dives
It is recommended that a dive team diving from an anchored boat begin their dive: -
ANSWER-against the prevailing current
Pressure in the middle ear is equalized through a part of the body called the: -
ANSWER-Eustachian tube
To relieve a cramp in the calf: - ANSWER-Bend the toe of the fin toward the knee to
stretch the muscle
Scuba tanks should always have some pressure in them to prevent: - ANSWER-
Moisture from entering
The predictable daily rise and fall of the ocean at a single point is called: - ANSWER-
The tide
Engraved markings on scuba tanks include: - ANSWER-Date of hydrostatic test, serial
number, type of material
, Engraved markings on scuba tanks include: - ANSWER-Date of hydrostatic test, serial
number, type of material
If you are diving wearing an exposure suit, you should _____ to safely control buoyancy
as you descend. - ANSWER-add air to your buoyancy device
Continued loss of body heat in cold water will produce: - ANSWER-Muscle cramps,
Progressive immobility, Insensibility to pain (All of the above)
When rinsing a regulator it is best to: - ANSWER-Leave the regulator attached to the
tank or have the dust cap in place
For optimum no-decompression bottom times, plan repetitive dives so that each
successive dive is to _________ depth. - ANSWER-a shallower
If it is suspected that the air in a tank is contaminated due to its smell or taste: -
ANSWER-Do not use the tank and immediately call the dive shop that filled the tank so
they can investigate the problem
If your dive buddy complains to you about having aching pain in his/her shoulder one
hour after the dive, you might suspect: - ANSWER-Decompression sickness
(USE DIVE AIR TABLE 2) According to NAUI, a repetitive dive is defined as more than
one dive within a period of _________ hours. - ANSWER-24
A symptom of carbon monoxide poisoning is often: - ANSWER-Headache
You should have your regulator serviced by a certified repair technician: - ANSWER-As
recommended by the manufacturer
Sea water weighs _____ kilograms per liter or _____ pounds per cubic foot. -
ANSWER-1..0
Four main actions you should consider in giving first aid for diving accidents are: -
ANSWER-Maintain basic life support, call for help, treat for shock, deliver 100% oxygen
The first color lost in the spectrum upon descent during a dive is _____. - ANSWER-red
A regular breathing pattern while diving would be: - ANSWER-Slightly slower and
deeper than you normally breathe
Two types of materials that scuba tanks are made from are steel and _________. -
ANSWER-aluminum
Two methods of measuring air pressure are BAR or: - ANSWER-pounds per square
inch
