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SSI OPEN WATER DIVER FINAL EXAM
WITH 100% CORRECT AN SWERS
Question :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
Correct answer:C
Question :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
Correct answer:A
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Question :The condition in which certain colors are diminished
as depth increases is called:
-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption
Correct answer:D
Question :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
Correct answer:C
Question :Gauge pressure is defined as:
-A: Hydrostatic pressure minus 1 ata
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-B: The pressure at the surface
-C: The depth reading on a gauge
-D: Absolute pressure minus 1 ata
Correct answer:D
Question :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
Correct answer:D
Question :The event that led to the use of the acronym SCUBA
to describe diving was:
Development of what and when?
Correct answer:Demand regulator in 1943
Question :Ear squeeze can be prevented by
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-A: Relaxing
-B: All answers are correct
-C: Never diving with a cold
-D: rotating the jaw, swallowing or Valsalva
Correct answer:B
Question :The first symptom of a sinus squeeze is usually:
-A: a dull pain deep within the head
-B: a sharp pain at the base of the neck
-C: a crushing pain high in the chest
-D: a sharp pain above the eyes
Correct answer:D
Question :If you experience pain in the ear during descent: