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NAUI Open Water eLearning (New 2024/
2025 Update) Questions and Verified
Answers| 100% Correct| A Grade
QUESTION
Which of the following physical factors can make you incapable of sustaining the efforts sometimes demanded when participating in recreational diving Answer: All of the above (inadequate sleep, recent head cold, recent ingestion of drugs)
QUESTION
If it is suspected that the air in a tank is contaminated due to its smell or tase: Answer: Do not use the tank and immediately call the dive shop that filled the tank so they can investigate the problem
QUESTION
Physical fitness is an important consideration for scuba divers because it helps to prevent diving accidents due to: Answer: Exhaustion
QUESTION
If during a dive you and your buddy become separated, you should: Answer: Spend no more than one minute looking then surface
QUESTION
Which of the following limits should be established prior to every scuba dive? Answer: Maximum bottom time, maximum depth, minimum air pressure
QUESTION
Immediately upon reaching the dive site, you should: Answer: Observe conditions
QUESTION
The preferred action to take if you find yourself alone and out of air at 30ft in open water is: Answer: Weight dropping buoyant ascent
QUESTION
Currents that suddenly appear and disappear are ___ and ___ is the underwater movement of water caused by wave action that you will experience when diving in areas close to shore. Answer: Transition; surge
QUESTION
Breathing dry air, a scuba diver tends to become dehydrated while diving due to: Answer:
Answer: first stage
QUESTION
If you receive your entry level training in a tropical environment and then move or travel to a northern environment, the best way of becoming familiar with the diving procedures specific to a new locale is to: Answer: Contact an active, preferably NAUI, dive master or instructor to orient you to the new locale
QUESTION
Examples of natural navigation aids divers may use during dives include: Answer: All of the above (ripple marks in the sand, sun brightness, bottom contours)
QUESTION
The primary purpose of the exposure suit is to Answer: Preserve body heat during dives
QUESTION
To prevent air embolism, a diver should Answer: Breath normally at all times during ascent and never hold their breath
QUESTION
You should have your regulator serviced by a certified repair technician: Answer: As recommended by the manufacturer
QUESTION
Two methods of measuring air pressure are BAR or Answer: PSI
QUESTION
An irregular breathing pattern (skip breathing) while diving will possibly cause Answer: Carbon dioxide excess
QUESTION
Because of refraction, objects underwater appear ___ and ___ when the diver is looking through their mask Answer: Larger; closer
QUESTION
A symptom of carbon monoxide poisoning is often Answer: headache
QUESTION
The minimum surface interval recommended between two dives is __ minutes Answer: 60
QUESTION
Completing this entry level scuba certification course makes you knowledgeable and skillful enough to dive safely in or at: Answer: Open water with conditions similar to those in which you were trained
QUESTION
When rinsing a regulator it is best to Answer: Have the first stage lower than the second stage
QUESTION
When conducting a buoyancy check, neutral buoyancy or proper weighting is attained when, with a normal breath, you float at or near: Answer: eye level
QUESTION
What type of pressure is defined as gauge (water) pressure plus atmospheric (air) pressure?
Answer: Absolute
QUESTION
A diver with blood and mucous in his/her mask upon surfacing will most likely have Answer: Sinus squeeze
QUESTION
It is recommended that a dive team diving from an anchored boat have: Answer: a trail line 30m long with a buoy at the end
QUESTION
Engraved markings on scuba tanks include Answer: Date of hydrostatic test, serial number, type of material
QUESTION
A depth that is equivalent to one atmosphere in the ocean is equal to ___ in sea water and __ in fresh water. Answer: 10m (33ft); 10.4m (34ft)
QUESTION
It is advisable that a sport/recreational diver:
QUESTION
Scuba tanks should always have some pressure in them to prevent: Answer: moisture from entering
QUESTION
Almost all injuries from aquatic life are caused by ___ action on the part of the animal. Answer: Defensive
QUESTION
A regular breathing pattern while diving would be: Answer: Slightly slower and deeper than you normally breathe
QUESTION
Appropriate first aid measures for an unconscious scuba dive should include consideration of: Answer: drowning, air embolism and decompression sickness
QUESTION
Diving equipment should be: Answer: Rinsed thoroughly, dried and stored in a cool place
QUESTION
It is recommended that a dive team diving from an anchored boat begin their dive: Answer: Against the prevailing current
QUESTION
__ is a worldwide emergency network of hyperbaric chambers and diving physicians Answer: Divers Alert Network (DAN)
QUESTION
Four main actions you should consider in giving first aid for diving accidents are: Answer: Maintain basic life support, call for help, treat for shock, deliver 100% oxygen
QUESTION
Continued loss of body heat in cold water will produce: Answer: All of the above (muscle cramps, progressive immobility, insensibility to pain)
QUESTION
A diver's inability to equalize his/her ears during ascent could cause: Answer: A block or reverse block
Answer: Its fit on your body
QUESTION
A diver experiencing panic should Answer: Stop, rest and breath slowly and deeply until you recover
QUESTION
The __ line is the direction of travel on the compass Answer: lubber
QUESTION
When planning and executing a dive, it is important for diving buddies to: Answer: Agree on a dive leader
QUESTION
The absolute pressure in the ocean at 16 m is Answer: 2.6 atmospheres absolute
QUESTION
The maximum dive time for a dive to 60 ft is __ minutes
Answer: 50
QUESTION
The last thing to check before making a giant stride or any water entry is that: Answer: Area below is clear
QUESTION
Symptoms of Nitrogen Narcosis are similar to Answer: Alcohol intoxication
QUESTION
Sea water weighs __ kilograms per liter or ___ pounds per cubic foot Answer: 1.025 / 64.
QUESTION
Which of the following will help to prevent seasickness? Answer: Settle yourself in a midway point of the boat
QUESTION
Snorkels over 15 inches in length are not recommended primarily because
QUESTION
To relieve a cramp in the calf: Answer: Bend the toe of the fin toward the knee to stretch the muscle
QUESTION
Open heel fins are usually the fins of choice for scuba divers because Answer: They may be used in a wide variety of environmental conditions
QUESTION
A diver's body heat is lost through conduction (primarily) at a rate of approximately _ times more rapidly than in air Answer: 25
QUESTION
Most surface waves are caused by: Answer: wind
