Dive Master NAUI NAUI Nitrox Diver Final Exam

Dive Master NAUI NAUI Nitrox Diver Final Exam Latest Update -220 Questions and 100% Verified Correct Answers Guaranteed A+

_____ is a loss of your sense of direction or position. - CORRECT ANSWER:

Disorientation

_____ is the biggest breath you can exhale. - CORRECT ANSWER: Vital capacity

A dive team conducting a night dive should have a total of how many lights (minimum)

between them? - CORRECT ANSWER: 4

A dive team conducts a dive to 80 feet (24 meters) of sea water for an actual dive time of 32 minutes. What is the minimum time that the same team can stay out during a surface interval and make a repetitive dive to 69 feet (21 meters) of sea water for an actual dive time of 30 minutes without required decompression? - CORRECT

ANSWER: 3 hours and 21 minutes

A dive team conducts a dive to 95 feet (29 meters) of sea water for an actual dive time of 20 minutes. The team then has a surface interval of 2 hours. The second dive is conducted to a depth of 60 feet (18 meters) for an actual dive time of 30 minutes. The team then has a surface interval of 1 hour and 45 minutes. The team plans to make a third dive to a depth of 40 feet (12 meters). What is the team's adjusted maximum dive

time for the third dive? - CORRECT ANSWER: 69 minutes

A dive team diving in a fresh water lake in the summer is at a depth of 20 feet (6 meters). The water temperature at this depth is 85 degrees Fahrenheit (29 degrees Celsius) and one diver in the team has 244 cubic inches (4 liters) of air in her buoyancy compensator (BC). As the team descends to a depth of 60 feet (18 meters), they pass through a thermocline and the water temperature is now 55 degrees Fahrenheit (12 degrees Celsius). 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 cubic inches (liters)? - CORRECT ANSWER: 132

cubic inches/2.16 liters

A dive team executes a dive and accidentally exceeds their planned actual dive time by

• minutes. Their actual dive profile was 110 feet (34 meters) for 20 minutes. What

required decompression schedule should the team follow during their ascent? -

CORRECT ANSWER: A 5 minute stop at 15 feet (5 meters)

A dive team executes a dive to 110 feet (33 meters) of sea water for an actual dive time of 15 minutes. The team has a surface interval of 1 hour and 30 minutes. What is the adjusted maximum dive time available to the team on a repetitive dive to a depth of 65 feet (20 meters) of sea water? - CORRECT ANSWER: 25 minutes 1 / 3

A dive team spends their first 10 minutes of actual dive time during a dive at 70 feet (21 meters) of sea water. The next 20 minutes are spent at a depth of 40 feet (12 meters).

What is the dive team's letter group after surfacing? - CORRECT ANSWER: F

A dive team wants to recover (lift) a 380 pound (172 kg)(dry weight) anchor from the bottom of the ocean. The anchor displaces 3 cubic feet (85 liters) of sea water. The bottom composition is flat and firm. How many lift bags, rated for 50 pounds (23 kg) of

lift each, will it take to recover (lift) the anchor? - CORRECT ANSWER: 4 bags

A hood or tight seal can fool your carotid sinus baroreceptors into thinking that there is

high blood pressure by pushing on them. - CORRECT ANSWER: True

A marine animal whose tissues are toxic, either in part or entirety is _____. - CORRECT

ANSWER: Poisonous

A pressure buildup in the ear during ascent can produce a condition known as _____. -

CORRECT ANSWER: Alternobaric vertigo

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)? - CORRECT ANSWER: 2.87

A(n) _____ is the smallest possible unit into which matter can be divided and still retain

its unique characteristics. - CORRECT ANSWER: Atom

An air compressor used for filling scuba cylinders operates by the principle of _____. -

CORRECT ANSWER: Boyle's Law

An air consumption rate of 40 psig (2.76 bar) per minute using a 3,000 psig/80 cubic

foot (207 bar/11 liter wet volume) cylinder is equal to? - CORRECT ANSWER: 1.07

cubic feet per minute (30 liters per minute)

An extra second stage should be mounted in the center of the chest for easy

accessibility by _____. - CORRECT ANSWER: Both the donor and recipient

Archimedes' Principle states that: "an object partially or wholly immersed in a fluid is buoyed up by a force equal to the _____ of the _____ displaced by that object". -

CORRECT ANSWER: weight; fluid

As a boat owner or skipper, you have a responsibility to _____. - CORRECT ANSWER: People on your boat Other boats Swimmers

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As we inhale air, it moves from the nose and the mouth to the _____ into the two _____ and finally to the microscopic _____. - CORRECT ANSWER: Trachea, bronchi, alveoli

Besides your basic diving gear, which of the following pieces of equipment are needed

for a search and light-salvage operation? - CORRECT ANSWER: Lift bag and a

separate air supply for lifting.

Carbon monoxide levels in the blood are elevated by smoking cigarettes. - CORRECT

ANSWER: true

Clinical Hypothermia occurs when the core temperature of the human body falls below

what temperature? - CORRECT ANSWER: 95 Fahrenheit (35 Celsius

Compressed air, the gas that is primarily used by recreational divers, is composed of: -

CORRECT ANSWER: 78.04% nitrogen, 20.94% oxygen, .033% carbon dioxide, and

.934% inert gas

Compressing your carotid arteries too much can make you _____. - CORRECT

ANSWER: Dizzy, or even unconscious

Conditions permitting, on descent most divers pause at _____ to do a quick buddy check and verify dive equipment operation/security. - CORRECT ANSWER: 15-33 feet (5-10 meters)

Currents in bodies of water are formed by _____. - CORRECT ANSWER: Surface

winds, The rotation of the earth, The influence of the sun and moon

Density is defined as the _____ per unit _____ of a substance - CORRECT ANSWER:

mass; volume

Diving compasses need to be equipped with a(n) _____ that is aligned with the user to

obtain and follow a course or bearing. - CORRECT ANSWER: Lubber line

Dry suits form a waterproof barrier, but require undergarments to be effective in cold

water - CORRECT ANSWER: True

During a night dive, the "distress" signal is expressed by the following movement pattern of a diver's light _____ - CORRECT ANSWER: Rapidly swinging your light in an overhead arc

During ascent from any dive in excess of 40 feet (12 meters), divers are encouraged to make a safety stop at _____ for one minute and a precautionary stop between _____

for three to five minutes. - CORRECT ANSWER: One half the deepest depth of the

dive, 10 feet (3 meters)/20 feet (6 meters)

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