NAUI Master Scuba Diver Exam Questions and Correct Answers.

NAUI Master Scuba Diver Exam Questions
and Correct Answers
Question 1
A dive team diving in a freshwater lake in the summer is at a depth of 20ft (6 meters).
The water temperature at this depth is 85°F (29°C) and one diver in the team has 244
cubic inches (4 liters) of air in her BC. As the team descends to a depth of 60 feet (18
meters), they pass through a thermocline and the water temp is now 55°F (12°C). If
the diver with 244 cubic inches (4 liters) of air in her BC did not add or remove any air
from the compensator, the new volume in her BC after arrival at 60 feet (18 meters)
would be how many liters?
- 193 cubic inches (3.16 liters)
- 152 cubic inches (2.50 liters)
- 187 cubic inches (3.06 liters)
- 132 cubic inches (2.16 liters)

Correct Answer
- 132 cubic inches (2.16 liters)



Question 2
The current recommendation regarding pregnancy and diving, is for women___.
- Not to dive
- Go ahead and dive
- to dive to 33ft (10 meters) or shallower
- To be able to dive without limitation
Correct Answer
- Not to dive




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,Question 3
Density is defined as the ___ per unit ___ of a substance.
- Pressure; volume
- Mass; volume
- Shape; size
- Color; palet
Correct Answer
- Mass; volume



Question 4
Compressed air, the gas that is primarily used by recreational divers, is composed of:
- 81% N, 17% O, 1% CO2, and 1% inert gas
- 78.04% N, 20.94% O, 0.033% CO2, and 0.934% inert gas
- 75% N, 23% O, and 2% He
- 65% N, 33% O, and 2% CO
Correct Answer
- 78.04% N, 20.94% O, 0.033% CO2, and 0.934% inert gas



Question 5
One way that heat loss occurs during diving activity is through ___.
- Conduction
- Convection
- Convolution
- Collusion
Correct Answer
- Conduction




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,Question 6
A sealed flexible container with 10 liters of air in it is submerged to a depth of 82 feet
(25 meters) in the ocean. Providing there is no temperature change in the water
between the surface and at 82 feet (25 meters), what is the new volume in the
container at 82 feet (25 meters)?
- 3.87
- 5.38
- 1.87
- 2.87
Correct Answer
- 2.87



Question 7
Which technique is effective for controlling the ascent of an unconscious diver?
- Tank tow
- Fin push
- Commercial diver maneuver
- None of these
Correct Answer
- None of these



Question 8
One of the six steps recommended by NAUI in the preparation for a rescue is _____.
- Completion of NAUI Scuba Rescue Diver course
- To receive training as a hyperbaric chamber operator
- To carry extra weight to a diver in distress at the surface
- To receive training in the use of nitrox
Correct Answer
- Completion of NAUI Scuba Rescue Diver course




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, Question 9
Clinical Hypothermia occurs when the core temperature of the human body falls
below what temperature?
- 98.6F (37C)
- 90F (32C)
- 88F (31C)
- 95F (35C)
Correct Answer
- 95F (35C)



Question 10
Which valve is an example of a special scuba valve that is required for a certain types
of specialty diving such as deep diving with a single cylinder?
- Y valve
- J valve
- K valve
- R valve
Correct Answer
- Y valve



Question 11
Which of the following is a method for measuring distance underwater?
- Kick cycles
- Spectrometry
- Hydrometry
- Pedometry

Correct Answer
- Kick cycles




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