NAUI Instructor Exam Study Guide
2026/2027 — Verified Practice
Questions and Correct Answers |
Latest update,
The amount of gas dissolved in a liquid is directly
related to its partial pressure above the liquid.
A. Boyle's Law
B. Henry's Law
C. Dalton's Law
D. Charles' Law
Correct Answer: B
The relationship of gas solubility and temperature is:
A. Directly related
B. Inversely related
C. Unrelated
D. Exponentially related
Correct Answer: B
Inert gas loading in relation to body tissue:
A. Decreases as depth increases
B. Body tissue absorbs more inert gas as depth
increases
C. Is unaffected by depth
,D. Only occurs during ascent
Correct Answer: B
A benefit of dive computers compared to dive
tables is that they:
A. Are more accurate for deep dives
B. Give the diver credit for shallow portions of the
dive
C. Eliminate the need for safety stops
D. Automatically calculate air consumption
Correct Answer: B
When planning a cold or strenuous dive, the rule is
to:
A. Reduce bottom time by 50%
B. Use the next greater dive TIME to determine
letter group
C. Increase the surface interval by 30 minutes
D. Limit depth to 60 feet
Correct Answer: B
Equilibrium as it relates to nitrogen in the body
occurs when:
A. The partial pressure of oxygen equals nitrogen
B. The pressure of nitrogen is balanced between air
and your body
C. All tissues are saturated with nitrogen
D. The diver reaches the surface
Correct Answer: B
, The Haldane surfacing ratio was originally 2:1 but
has been updated with new research to:
A. 1.5:1
B. 1.58:1
C. 1.7:1
D. 1.85:1
Correct Answer: B
A tissue compartment is best described as:
A. A physical area within the body
B. A mathematical model consisting of multiple
theoretical tissues and their relative half-times
C. A type of dive table
D. A measurement of lung capacity
Correct Answer: B
Fast compartments have _____ half-times; slow
compartments have _____ half-times.
A. Long; short
B. Short; long
C. Equal; variable
D. Variable; equal
Correct Answer: B
Ascent rates at altitude should be:
A. Faster than at sea level
B. Slower than at sea level
C. The same as at sea level
D. Determined by water temperature
Correct Answer: B
2026/2027 — Verified Practice
Questions and Correct Answers |
Latest update,
The amount of gas dissolved in a liquid is directly
related to its partial pressure above the liquid.
A. Boyle's Law
B. Henry's Law
C. Dalton's Law
D. Charles' Law
Correct Answer: B
The relationship of gas solubility and temperature is:
A. Directly related
B. Inversely related
C. Unrelated
D. Exponentially related
Correct Answer: B
Inert gas loading in relation to body tissue:
A. Decreases as depth increases
B. Body tissue absorbs more inert gas as depth
increases
C. Is unaffected by depth
,D. Only occurs during ascent
Correct Answer: B
A benefit of dive computers compared to dive
tables is that they:
A. Are more accurate for deep dives
B. Give the diver credit for shallow portions of the
dive
C. Eliminate the need for safety stops
D. Automatically calculate air consumption
Correct Answer: B
When planning a cold or strenuous dive, the rule is
to:
A. Reduce bottom time by 50%
B. Use the next greater dive TIME to determine
letter group
C. Increase the surface interval by 30 minutes
D. Limit depth to 60 feet
Correct Answer: B
Equilibrium as it relates to nitrogen in the body
occurs when:
A. The partial pressure of oxygen equals nitrogen
B. The pressure of nitrogen is balanced between air
and your body
C. All tissues are saturated with nitrogen
D. The diver reaches the surface
Correct Answer: B
, The Haldane surfacing ratio was originally 2:1 but
has been updated with new research to:
A. 1.5:1
B. 1.58:1
C. 1.7:1
D. 1.85:1
Correct Answer: B
A tissue compartment is best described as:
A. A physical area within the body
B. A mathematical model consisting of multiple
theoretical tissues and their relative half-times
C. A type of dive table
D. A measurement of lung capacity
Correct Answer: B
Fast compartments have _____ half-times; slow
compartments have _____ half-times.
A. Long; short
B. Short; long
C. Equal; variable
D. Variable; equal
Correct Answer: B
Ascent rates at altitude should be:
A. Faster than at sea level
B. Slower than at sea level
C. The same as at sea level
D. Determined by water temperature
Correct Answer: B
