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Scuba Exam Questions Solved 100% Correct
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Scuba Exam Questions Solved 100% Correct
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Scuba Exam Questions Solved 100% CorrectTo be injured by an animal with poisonous spines, you must:
A. Be within a radius of 3 m/10 ft, as most poisonous animals cannot shoot their spines
farther than this.
B. Be the aggressor and touch the animal first.
C. Be barehanded, as most spines cannot
pass through gloves.
D. None of the above. - ANSWER B. Be the aggressor and touch the animal first.
_________ buoyant items tend to float__________ buoyant items tend to sink, items
that are __________ buoyant neither float nor sink.
A. Negatively, neutrally, positively
B. Positively, neutrally, negatively
C. Positively, negatively, neutrally
D. None of the above. - ANSWER C. Positively, negatively, neutrally
A scuba cylinder that normally lasts one hour at the surface will last _______ minutes at
20 m/66 ft.
A. 30
B. 20
C. 15
D.10 - ANSWER B. 20
If you feel pain or discomfort during descent:
,A. Stop, hold in place and equalize forcefully
until your ears clear.
B. Ascend to the point where you can comfortably equalize, and only then continue
your descent.
C. Abort the dive and consult a physician.
D. Note the depth at which the pain occurred and conduct your safety stop there at the
end of the dive. - ANSWER B. Ascend to the point where you can comfortably
equalize, and only then continue your descent.
All of the following are true except:
A. You can help prevent mask squeeze by exhaling periodically into your mask
during ascent.
B. Regular dental care and ensuring your teeth are free of gas spaces can help prevent
tooth squeeze.
C. If you experience a reverse block, descend to a point where the pain subsides, then
ascend slowly while wiggling your jaw and swallowing. Repeat this process as needed
until you can ascend without pain or discomfort.
D. The danger in taking decongestants is that they may wear off during a dive and
have other possible side effects. - ANSWER A. You can help prevent mask squeeze by
exhaling
periodically into your mask during ascent.
Any time you cannot inhale while scuba diving (such as when a regulator is out of
your mouth), you must be:
A. Holding your breath to conserve your remain- ing air.
B. Exhaling.
C. Monitoring your depth to avoid
accidental ascents while breath holding.
D. Both the first and third answers are correct. - ANSWER B. Exhaling.
All of the following can help prevent decompression sickness (DCS) except:
, A. Make a safety stop of between three and five minutes at a depth of 3 to 6 m/10 to
20 ft.
B. Remain well within your dive computer's no decompression limit.
C. Avoid drinking fluids prior to the dive.
D. Ascend no faster than the rate allowed by the dive computer. - ANSWER C.
Avoid drinking fluids prior to the dive.
Contributing factors to decompression sickness can include:
A. Rapid ascents.
B. "Pushing" or exceeding your computer's no decompression limits.
C. Heavy exertion and/or dehydration.
D. All of the above. - ANSWER D. All of the above.
Which of the following is the best way to prevent or reduce nitrogen narcosis?
A. Avoid unnecessary exertion, as elevated carbon dioxide levels exacerbate narcosis.
B. Avoid dives below 20 m/66 ft.
C. Use a dry suit, as cold increases the risk of narcosis.
D. Both the first and third answers are correct. - ANSWER B. Avoid dives below 20
m/66 ft.
Which of the following may indicate that air in a scuba cylinder is contaminated and
potentially toxic?
A. Color.
B. Odor.
C. Taste.
D. Any of the above. - ANSWER D. Any of the above.
A mask must cover the nose:
A. To prevent water from entering.
B. To ensure the best possible fit.
C. So that you can keep the pressure inside the mask equal to the pressure outside.
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