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Scuba O/W 3

By admin / September 27, 2020

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Question 1 of 10

1. Question
21. Because of refraction, objects underwater appear _________ and _________ when the diver is looking through his/her mask
- a) smaller; closer
- b) larger; closer
- c) smaller; farther away
- d) larger; farther away
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Question 2 of 10

2. Question
1. When the pressure of nitrogen is balanced between the air and your body, you are at a state of _______________.
- a) ingassing
- b) equilibrium
- c) outgassing
- d) panic
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Question 3 of 10

3. Question
1. A diver’s body heat is lost through conduction (primarily) at a rate of approximately _________ times more rapidly than in air.
- a) 10
- b) 25
- c) 30
- d) 15
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Question 4 of 10

4. Question
1. What type of pressure is defined as gauge (water) pressure plus atmospheric (air) pressure?
- a) Water
- b) Absolute
- c) Air
- d) Over
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Question 5 of 10

5. Question
1. The absolute pressure in the ocean at 53 feet is:
- a) 1.6 atmospheres absolute
- b) 2.6 atmospheres absolute
- c) 3.6 atmospheres absolute
- d) 3.0 atmospheres absolute
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Question 6 of 10

6. Question
26. If a diver’s surface air consumption rate is 25 psi per minute, what would be the consumption rate at 66 feet of seawater?
- a) 75 psi per minute
- b) 80 psi per minute
- c) 60 psi per minute
- d) 50 psi per minute
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Question 7 of 10

7. Question
27. A depth that is equivalent to one atmosphere in the ocean is equal to _________ feet in sea water and _________ feet in fresh water.
- a) 34; 33
- b) 33; 34
- c) 35; 33
- d) 33; 33
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Question 8 of 10

8. Question
1. Two methods of measuring air pressure are BAR or
- a) quadratic feet per minute
- b) static pounds per minute
- c) pounds per square inch
- d) running pressure per minute
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Question 9 of 10

9. Question
1. Sound travels about _________ times faster in water than in air.
- a) 2
- b) 4
- c) 6
- d) 8
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Question 10 of 10

10. Question
1. The first color lost in the spectrum upon descent during a dive is _________ .
- a) yellow
- b) red
- c) orange
- d) blue
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