NAUI NITROX DIVER NEW VERSION QUESTIONS AND
VERIFIED ANSWERS FOR EXAM SUCCESS
The amount of time you can remain at depth is limited by the ______ in the air
you are breathing. ANSWER nitrogen
ANSWER John Scott Haldane created a quantitative model for nitrogen loading
and diving tables at the beginning of the 20th century.
Nitrogen is referred to as an inert gas. Consequently, our bodies do not utilize
the nitrogen that we breathe.
ANSWER Dr. Morgan Wells is credited with creating and popularizing nitrox
diving techniques for regular scuba diving.
ANSWER 1992: NAUI-approved enriched air nitrox training
ANSWER longer dive times and shorter surface intervals are two advantages of
using Nitrox when diving.
What does the letter "x" in EANx stand for? ANSWER the mix's proportion of
oxygen.
Paul Bert proved in 1878 that decompression sickness was caused by _____,
which were released as bubbles after abrupt decompression. ANSWER nitrogen
ANSWER mid-range: Nitrox is a _____ breathing gas.
For dives in the _____ depth range, nitrox offers the biggest benefits -
ANSWER 15-33 m (50-110 ft).
When a gas is heated in a confined, rigid container, its pressure will rise.
This statement relates to which law? "If one quantity of gas will dissolve at one
atmosphere of pressure, then three quantities of gas will dissolve at three
atmospheres." ANSWER: The Law of Henry
, There are numerous methods for measuring atmospheric pressure. How many
millimeters of mercury is one atmosphere? 760 mmHg is the answer.
The percentage of the overall pressure that a particular gas in a mixture exerts is
its ____. ANSWER partial pressure
At 17 msw (56 fsw), what is the absolute pressure? ANSWER 2.7 ata
At 26 msw (85 fsw) depth, what is the oxygen partial pressure in EAN35?
ANSWER 1.3 ata
What percentage of oxygen is present in your mix if the oxygen partial pressure
is 1.3 ata at a depth of 37 msw (122 fsw)? ANSWER 0.28
At a depth of 21 msw (69 fsw), what is the partial pressure of oxygen in the air?
ANSWER 0.65 ata
Nitrogen narcosis symptoms are similar to those of ANSWER alcohol
intoxication.
____ The law states that "at a constant temperature, the volume of a gas varies
inversely with absolute pressure, while the density of a gas varies directly with
absolute pressure." - Answer: Boyle's
An additional atmospheric of pressure is added to the one atmosphere of surface
pressure for every 10 meters (33 feet) as you descend in the ocean. ANSWER
true
ANSWER false: A diver with nitrogen narcosis will always be conscious of his
impairment.
It is believed that the mechanisms underlying nitrogen narcosis are comparable
to those of ANSWER anesthesia.
When ascending from a scuba dive, the controlled release of pressure is known
as "ANSWER decompression."
Which airborne gas is necessary for life to exist? ANSWER oxygen
ANSWER carbon dioxide is the main waste product from the metabolism of
oxygen.
VERIFIED ANSWERS FOR EXAM SUCCESS
The amount of time you can remain at depth is limited by the ______ in the air
you are breathing. ANSWER nitrogen
ANSWER John Scott Haldane created a quantitative model for nitrogen loading
and diving tables at the beginning of the 20th century.
Nitrogen is referred to as an inert gas. Consequently, our bodies do not utilize
the nitrogen that we breathe.
ANSWER Dr. Morgan Wells is credited with creating and popularizing nitrox
diving techniques for regular scuba diving.
ANSWER 1992: NAUI-approved enriched air nitrox training
ANSWER longer dive times and shorter surface intervals are two advantages of
using Nitrox when diving.
What does the letter "x" in EANx stand for? ANSWER the mix's proportion of
oxygen.
Paul Bert proved in 1878 that decompression sickness was caused by _____,
which were released as bubbles after abrupt decompression. ANSWER nitrogen
ANSWER mid-range: Nitrox is a _____ breathing gas.
For dives in the _____ depth range, nitrox offers the biggest benefits -
ANSWER 15-33 m (50-110 ft).
When a gas is heated in a confined, rigid container, its pressure will rise.
This statement relates to which law? "If one quantity of gas will dissolve at one
atmosphere of pressure, then three quantities of gas will dissolve at three
atmospheres." ANSWER: The Law of Henry
, There are numerous methods for measuring atmospheric pressure. How many
millimeters of mercury is one atmosphere? 760 mmHg is the answer.
The percentage of the overall pressure that a particular gas in a mixture exerts is
its ____. ANSWER partial pressure
At 17 msw (56 fsw), what is the absolute pressure? ANSWER 2.7 ata
At 26 msw (85 fsw) depth, what is the oxygen partial pressure in EAN35?
ANSWER 1.3 ata
What percentage of oxygen is present in your mix if the oxygen partial pressure
is 1.3 ata at a depth of 37 msw (122 fsw)? ANSWER 0.28
At a depth of 21 msw (69 fsw), what is the partial pressure of oxygen in the air?
ANSWER 0.65 ata
Nitrogen narcosis symptoms are similar to those of ANSWER alcohol
intoxication.
____ The law states that "at a constant temperature, the volume of a gas varies
inversely with absolute pressure, while the density of a gas varies directly with
absolute pressure." - Answer: Boyle's
An additional atmospheric of pressure is added to the one atmosphere of surface
pressure for every 10 meters (33 feet) as you descend in the ocean. ANSWER
true
ANSWER false: A diver with nitrogen narcosis will always be conscious of his
impairment.
It is believed that the mechanisms underlying nitrogen narcosis are comparable
to those of ANSWER anesthesia.
When ascending from a scuba dive, the controlled release of pressure is known
as "ANSWER decompression."
Which airborne gas is necessary for life to exist? ANSWER oxygen
ANSWER carbon dioxide is the main waste product from the metabolism of
oxygen.
