Diving Under Special Conditions



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Diving Under Special Conditions

Quiz settings


Property

Setting

Passing score

80%

Display Point Value

Yes

Randomize Questions

Yes

Total Number of Questions

20

Total Number of Questions to Ask

All

Display User Score

Yes

Display Passing Score

Yes

Display Pass/Fail Messages

Yes

Email recipient





Questions


Multiple Choice, 10 points, 1 attempt(s) permitted.

1. Which of these coasts encompass the area of Maine to Rhode Island?

Correct

Choice

Feedback




Southeast Coast

Incorrect; the Northeast Coast encompass the area of Maine to Rhode Island

X

Northeast Coast

Correct




Gulf of Mexico Coast

Incorrect; the Northeast Coast encompass the area of Maine to Rhode Island




Mid-Atlantic Coast

Incorrect; the Northeast Coast encompass the area of Maine to Rhode Island

Multiple Choice, 10 points, 1 attempt(s) permitted.

2. In the Northeast Coast during the spring and summer water temperatures at _____ range from 48-54 degrees Fahrenheit (9-21 C).

Correct

Choice

Feedback




50 feet (15.24 m)

Incorrect; In the Northeast Coast during the spring and summer water temperatures at 100 feet (30.5 m) range from 48-54 degrees Fahrenheit (9-21 C).




75 feet (22.86 m)

Incorrect; In the Northeast Coast during the spring and summer water temperatures at 100 feet (30.5 m) range from 48-54 degrees Fahrenheit (9-21 C).

X

100 feet (30.5 m)

Correct




125 feet (38.1 m)

Incorrect; In the Northeast Coast during the spring and summer water temperatures at 100 feet (30.5 m) range from 48-54 degrees Fahrenheit (9-21 C).

Multiple Choice, 10 points, 1 attempt(s) permitted.

3. During what months is underwater visibility best in the Mid-Atlantic Coast?

Correct

Choice

Feedback




September-November

Incorrect; underwater visibility best in the Mid-Atlantic Coast during September - October.




August-October

Incorrect; underwater visibility best in the Mid-Atlantic Coast during September - October.

X

September-October

Correct




August-November

Incorrect; underwater visibility best in the Mid-Atlantic Coast during September - October.

Multiple Choice, 10 points, 1 attempt(s) permitted.

4. The fish common to the Gulf of Mexico with the worst reputation for biting is the _____.

Correct

Choice

Feedback

X

grey triggerfish

Correct




great barracuda

Incorrect; The fish common to the Gulf of Mexico with the worst reputation for biting is the grey triggerfish.




sandtiger shark

Incorrect; The fish common to the Gulf of Mexico with the worst reputation for biting is the grey triggerfish.




toadfish

Incorrect; The fish common to the Gulf of Mexico with the worst reputation for biting is the grey triggerfish.

Multiple Choice, 10 points, 1 attempt(s) permitted.

5. What is the highest temperature that is normally reached in the Northwest Coast during summer?

Correct

Choice

Feedback




34 degrees Fahrenheit (1.1C)

Incorrect; the highest temperature that is normally reached in the Northwest Coast during summer is 50 degrees Fahrenheit (10C).




38 degrees Fahrenheit (3.3C)

Incorrect; the highest temperature that is normally reached in the Northwest Coast during summer is 50 degrees Fahrenheit (10C).




45 degrees Fahrenheit (7.2C)

Incorrect; the highest temperature that is normally reached in the Northwest Coast during summer is 50 degrees Fahrenheit (10C).

X

50 degrees Fahrenheit (10C)

Correct

Multiple Choice, 10 points, 1 attempt(s) permitted.

6. The mid-Pacific costal region includes the waters of Northern and Central California. From San Francisco north, the best diving conditions in terms of water temperature and visibility generally occur from June through September. From San Francisco south to Point Conception, good diving conditions may continue through _____.

Correct

Choice

Feedback




November

Incorrect; From San Francisco south to Point Conception, good diving conditions may continue through December.

X

December

Correct




January

Incorrect; From San Francisco south to Point Conception, good diving conditions may continue through December.




February

Incorrect; From San Francisco south to Point Conception, good diving conditions may continue through December.

Multiple Choice, 10 points, 1 attempt(s) permitted.

7. The average water temperature around the major islands in the Central Pacific Ocean is _____.

Correct

Choice

Feedback




70 degrees Fahrenheit (21 C)

Incorrect; The average water temperature around the major islands in the Central Pacific Ocean is 76 degrees Fahrenheit (24 C).

X

76 degrees Fahrenheit (24 C)

Correct




78 degrees Fahrenheit (25.5 C)

Incorrect; The average water temperature around the major islands in the Central Pacific Ocean is 76 degrees Fahrenheit (24 C).




81 degrees Fahrenheit (27 C)

Incorrect; The average water temperature around the major islands in the Central Pacific Ocean is 76 degrees Fahrenheit (24 C).

True/False, 10 points, 1 attempt(s) permitted.

8. Jellyfish abound in the Tropics.

Correct

Choice

X

True




False

Feedback when correct: Correct

Feedback when incorrect: Incorrect

Multiple Response, 10 points, 1 attempt(s) permitted.

9. A boat used as a diving platform should be: (select all that apply)

Correct

Choice

X

equipped with a means for divers to enter and exit the water easily and safely

X

seaworthy and not loaded beyond the capacity recommended by the manufacturer for the expected conditions

X

equipped with ship-to-shore communications

X

maintained properly and in good repair

X

carrying a diver's flag, oxygen kit, first aid equipment, and drinking water

X

Manned by a trained vessel operator while divers are in the water

Feedback when correct: Correct

Feedback when incorrect: Incorrect

Multiple Choice, 10 points, 1 attempt(s) permitted.

10. In the Great Lakes, the water below the thermocline approach the temperature of maximum density for freshwater, ____.

Correct

Choice

Feedback

X

39 degrees Fahrenheit (4C)

Correct




55 degrees Fahrenheit (13C)

Incorrect; In the Great Lakes, the water below the thermocline approach the temperature of maximum density for freshwater, 39 degrees Fahrenheit (4C).




75 degrees Fahrenheit (24C)

Incorrect; In the Great Lakes, the water below the thermocline approach the temperature of maximum density for freshwater, 39 degrees Fahrenheit (4C).




32 degrees Fahrenheit (0C)

Incorrect; In the Great Lakes, the water below the thermocline approach the temperature of maximum density for freshwater, 39 degrees Fahrenheit (4C).

True/False, 10 points, 1 attempt(s) permitted.

11. Most open-ocean divers carry shark billies.

Correct

Choice




True

X

False

Feedback when correct: Correct

Feedback when incorrect: Incorrect

True/False, 10 points, 1 attempt(s) permitted.

12. Currents of 1 knot are considered the common limit for divers to be able to swim against.

Correct

Choice

X

True




False

Feedback when correct: Correct

Feedback when incorrect: Incorrect



Multiple Choice, 10 points, 1 attempt(s) permitted.

13. Which of these is NOT a special hazard normally associated with cave diving?

Correct

Choice

Feedback




The absence of a direct and immediate ascent route to the surface

Incorrect; Being dragged to the surface while deploying a lift-bag for a marker buoy is NOT a special hazard normally associated with cave diving.




The sometimes instantaneous loss of visibility because of silting or failure of the diver's light

Incorrect; Being dragged to the surface while deploying a lift-bag for a marker buoy is NOT a special hazard normally associated with cave diving.




The entanglement and impact hazards associated with being in a confined, enclosed space

Incorrect; Being dragged to the surface while deploying a lift-bag for a marker buoy is NOT a special hazard normally associated with cave diving.

X

Being dragged to the surface while deploying a lift-bag for a marker buoy

Correct

Multiple Choice, 10 points, 1 attempt(s) permitted.

14. Every cave diver must carry at least _____ lights during a dive.

Correct

Choice

Feedback




two

Incorrect; Every cave diver must carry at least three lights during a dive.

X

three

Correct




four

Incorrect; Every cave diver must carry at least three lights during a dive.




five

Incorrect; Every cave diver must carry at least three lights during a dive.

Multiple Response, 10 points, 2 attempt(s) permitted.

15. Diving in cold water and at or near freezing temperatures presents potential equipment problems such as regulator freeze-up and free-flow. In an attempt to avoid cold related equipment problems, divers can/should: (select all that apply)

Correct

Choice

X

Select regulator models designed to resist freezing.

X

Submerge before breathing from or purging the regulator.

X

Avoid rapid or prolonged inflation of drysuit or buoyancy compensator.




Pre-chill the regulator before the dive.

X

Pay attention to early signs of a potential regulator freeze-up such as ice crystals on the tongue and abort the dive should these signs occur.

Feedback when correct: Correct

Feedback when incorrect: Incorrect

Multiple Response, 10 points, 2 attempt(s) permitted.

16. Penetration wreck diving, like cave diving, requires special training and equipment. Select the true statements concerning wreck diving.

Correct

Choice

X

Most intact wrecks are at depths in excess of 80 ft. (24.4 m).




Few intact wrecks can be found within divable depth ranges.

X

Entanglements are a real concern.

X

Visibility can be limited.

X

The use of a safety reel is mandatory.




A single scuba cylinder equipped with a J-valve is the recommended configuration for wreck diving.

Feedback when correct: Correct

Feedback when incorrect: Incorrect

True/False, 10 points, 1 attempt(s) permitted.

17. Aside from the need for diver carried lights, there are few concerns to consider when night diving.

Correct

Choice




True

X

False

Feedback when correct: Correct

Feedback when incorrect: Incorrect



Multiple Choice, 10 points, 1 attempt(s) permitted.

18. Which of these is NOT one of the four major conditions to be considered when planning dives at dams?

Correct

Choice

Feedback




Depth

Incorrect; current direction is NOT one of the four major conditions to be considered when planning dives at dams




Water temperature

Incorrect; current direction is NOT one of the four major conditions to be considered when planning dives at dams




Visibility

Incorrect; current direction is NOT one of the four major conditions to be considered when planning dives at dams




Flow velocities

Incorrect; current direction is NOT one of the four major conditions to be considered when planning dives at dams

X

Current direction

Correct

Multiple Choice, 10 points, 1 attempt(s) permitted.

19. Towed speeds of over _____ preclude divers from holding onto nets, and may cause mouthpieces and/or face masks to become dislodged.

(Towed speeds of over _____ preclude divers from holding onto nets, and may cause mouthpieces and/or face masks to become dislodged. )

Correct

Choice

Feedback




2 knots

Incorrect; Towed speeds of over 3 knots (1.5 m/s) preclude divers from holding onto nets, and may cause mouthpieces and/or face masks to become dislodged.

X

3 knots

Correct




4 knots

Incorrect; Towed speeds of over 3 knots (1.5 m/s) preclude divers from holding onto nets, and may cause mouthpieces and/or face masks to become dislodged.




5 knots

Incorrect; Towed speeds of over 3 knots (1.5 m/s) preclude divers from holding onto nets, and may cause mouthpieces and/or face masks to become dislodged.

Multiple Response, 10 points, 2 attempt(s) permitted.

20. Noxious gasses such as _____ commonly occur in anoxic halos from concentrations of fecal matter under fish cages and mussel rafts, as well as in areas of sewage settlement or low water flow. (select all that apply)

Correct

Choice

X

Methane

X

Ammonia

X

Hydrogen sulfide

Feedback when correct: Correct

Feedback when incorrect: Incorrect
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