NAUI INSTRUCTOR EXAM QUESTIONS AND ANSWERS
NEW VERSION WITH PASS GUARANTEE
Henry's Law: ANSWER The partial pressure of a gas above a liquid is directly
proportional to the amount of gas dissolved in the liquid.
Temperature and gas solubility relationship: ANSWER As temperature rises,
gas solubility falls.
(RELATED INVERSELY)
Inert gas loading in relation to body tissue: ANSWER As depth increases, body
tissue absorbs more inert gas.
Advantage of Dive Computers over Dive Tables: ANSWER Allows the diver to
receive credit for shallow dives.
Cold or Strenuous Diving Planning Rule: ANSWER Determine the letter group
by using the next greater dive time.
In terms of nitrogen in the body, equilibrium occurs when the pressure of
nitrogen in the air and your body is equal.
Originally 2:1, the Haldane surfacing ratio has been updated to 1.58:1 based on
recent research.
The amount of time needed for the tissue compartment to absorb or remove half
of the pressure differential between its initial pressure and the surrounding air
pressure is known as the tissue compartment half-time.
M-Value of tissue - ANSWER The highest pressure of nitrogen (inert gas) that
can be present in a certain tissue
The NAUI advises against diving when pregnant. ANSWER: Avoid doing so.
ANSWER Haldane tissue compartments: 5 compartments
Apx: Contemporary Computers. 16 sections
, Multiple hypothetical tissues and their corresponding halftimes make up the
tissue compartment in the ANSWER mathematical model.
Short halftimes and quick sections
Long halftimes and slow compartments
The pace of ascent at altitude is slower than at sea level.
Increase the amount of oxygen and decrease the amount of nitrogen in the
breathing gas to prolong dive times.
ANSWER Residual Nitrogen Time (RNT)
Time has already been spent at the dive depth (dive tables) repeatedly.
Remain out of the water, relax, breathe 100% oxygen, drink fluids, be watched
for symptoms of decompression disease, and be taken to a hyperbaric center if
symptoms appear. This is the protocol for missed decompression pauses.
ANSWER Surface Interval Time (SIT)
Repeat dive times can be extended by spending more time at the surface.
The Defense and Civil Institute of Environmental Medicine (DCIEM) issued
Canadian Dive Tables. ANSWER is based on more than 20 years of research
that was started by Kidd and Stubbs (1962).
The answer is Swiss Dive Tables, which were created by A.A. ALTITUDE
DIVING EXTENDED Bühlmann at the University of Zurich
You should: ANSWER Use the Maximum Dive Time as your Total Dive Time
if the time spent performing a "precautionary stop" at 5 msw (15 fsw) results in
your Total Dive Time exceeding the Dive Time Limits.
An hour following a dive, aching symptoms could be caused by: ANSWER
Decompression illness
ANSWER 6 ATA is the ATA rating for the majority of hyperbaric chambers
used to treat divers.
Sectional Haldane Tissue Half-Times: ANSWER 5, 10, 20, 40, 75 Mins
High altitude dive: Any dive that is more than a thousand feet in altitude
The ANSWER Multiplace, double-lock chamber is the best hyperbaric chamber
for dive injuries and is rated for use in six atmospheres.
NEW VERSION WITH PASS GUARANTEE
Henry's Law: ANSWER The partial pressure of a gas above a liquid is directly
proportional to the amount of gas dissolved in the liquid.
Temperature and gas solubility relationship: ANSWER As temperature rises,
gas solubility falls.
(RELATED INVERSELY)
Inert gas loading in relation to body tissue: ANSWER As depth increases, body
tissue absorbs more inert gas.
Advantage of Dive Computers over Dive Tables: ANSWER Allows the diver to
receive credit for shallow dives.
Cold or Strenuous Diving Planning Rule: ANSWER Determine the letter group
by using the next greater dive time.
In terms of nitrogen in the body, equilibrium occurs when the pressure of
nitrogen in the air and your body is equal.
Originally 2:1, the Haldane surfacing ratio has been updated to 1.58:1 based on
recent research.
The amount of time needed for the tissue compartment to absorb or remove half
of the pressure differential between its initial pressure and the surrounding air
pressure is known as the tissue compartment half-time.
M-Value of tissue - ANSWER The highest pressure of nitrogen (inert gas) that
can be present in a certain tissue
The NAUI advises against diving when pregnant. ANSWER: Avoid doing so.
ANSWER Haldane tissue compartments: 5 compartments
Apx: Contemporary Computers. 16 sections
, Multiple hypothetical tissues and their corresponding halftimes make up the
tissue compartment in the ANSWER mathematical model.
Short halftimes and quick sections
Long halftimes and slow compartments
The pace of ascent at altitude is slower than at sea level.
Increase the amount of oxygen and decrease the amount of nitrogen in the
breathing gas to prolong dive times.
ANSWER Residual Nitrogen Time (RNT)
Time has already been spent at the dive depth (dive tables) repeatedly.
Remain out of the water, relax, breathe 100% oxygen, drink fluids, be watched
for symptoms of decompression disease, and be taken to a hyperbaric center if
symptoms appear. This is the protocol for missed decompression pauses.
ANSWER Surface Interval Time (SIT)
Repeat dive times can be extended by spending more time at the surface.
The Defense and Civil Institute of Environmental Medicine (DCIEM) issued
Canadian Dive Tables. ANSWER is based on more than 20 years of research
that was started by Kidd and Stubbs (1962).
The answer is Swiss Dive Tables, which were created by A.A. ALTITUDE
DIVING EXTENDED Bühlmann at the University of Zurich
You should: ANSWER Use the Maximum Dive Time as your Total Dive Time
if the time spent performing a "precautionary stop" at 5 msw (15 fsw) results in
your Total Dive Time exceeding the Dive Time Limits.
An hour following a dive, aching symptoms could be caused by: ANSWER
Decompression illness
ANSWER 6 ATA is the ATA rating for the majority of hyperbaric chambers
used to treat divers.
Sectional Haldane Tissue Half-Times: ANSWER 5, 10, 20, 40, 75 Mins
High altitude dive: Any dive that is more than a thousand feet in altitude
The ANSWER Multiplace, double-lock chamber is the best hyperbaric chamber
for dive injuries and is rated for use in six atmospheres.
