PADI SSI OPEN WATER DIVER FINAL EXAM
Questions and Answers
1.Which of the statements concerning sound transmission underwater is
incorrect?
-A: Sound will travel farther underwater then in air
-B: Divers find it difficult to locate the direction of a sound producing source
-C: Divers find it easy to talk to each other directly through water
-D: Sound travels four times faster underwater than in air
Answer: C
2.The absolute pressure expressed in terms of atmospheres absolute at
33 feet in sea water is
-A: 2 ata
-B:1 ata
-C: 4 ata
-D: 3 ata
Answer: A
3.The condition in which certain colors are diminished as depth increases
is called
-A: Refraction
-B: Turbidity
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, -C: Diffusion
-D: Absorption
Answer: D
4.Earplugs
-A: Aid equalization of the middle of the ear
-B: Protect against cold
-C: Should never be worn while diving
-D: Protect ears from squeeze
Answer: C
5.Gauge pressure is defined as
-A: Hydrostatic pressure minus 1 ata
-B: The pressure at the surface
-C: The depth reading on a gauge
-D: Absolute pressure minus 1 ata
Answer: D
6.Sinus squeeze can be prevented by
-A: Valsalva technique
-B: Wearing earplugs
-C: Tilting the divers head back and forth
-D: Not diving with a cold
Answer: D
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Questions and Answers
1.Which of the statements concerning sound transmission underwater is
incorrect?
-A: Sound will travel farther underwater then in air
-B: Divers find it difficult to locate the direction of a sound producing source
-C: Divers find it easy to talk to each other directly through water
-D: Sound travels four times faster underwater than in air
Answer: C
2.The absolute pressure expressed in terms of atmospheres absolute at
33 feet in sea water is
-A: 2 ata
-B:1 ata
-C: 4 ata
-D: 3 ata
Answer: A
3.The condition in which certain colors are diminished as depth increases
is called
-A: Refraction
-B: Turbidity
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15
, -C: Diffusion
-D: Absorption
Answer: D
4.Earplugs
-A: Aid equalization of the middle of the ear
-B: Protect against cold
-C: Should never be worn while diving
-D: Protect ears from squeeze
Answer: C
5.Gauge pressure is defined as
-A: Hydrostatic pressure minus 1 ata
-B: The pressure at the surface
-C: The depth reading on a gauge
-D: Absolute pressure minus 1 ata
Answer: D
6.Sinus squeeze can be prevented by
-A: Valsalva technique
-B: Wearing earplugs
-C: Tilting the divers head back and forth
-D: Not diving with a cold
Answer: D
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