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SSI Open Water Diver Final Exam With complete solution | Latest 2024/25 | Updated
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SSI Open Water Diver Final Exam With complete solution | Latest 2024/25 | Updated
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SSI Open Water Diver Final Exam Withcomplete solution | Latest 2024/25 |
Updated
Which of the statements concerning sound transmission underwater is incorrect?
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-A: Sound will travel farther underwater then in air
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-B: Divers find it difficult to locate the direction of a sound producing source
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-C: Divers find it easy to talk to each other directly through water
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-D: Sound travels four times faster underwater than in air - C
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The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water
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is:
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-A: 2 ata
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-B:1 ata ii
-C: 4 ata
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-D: 3 ata - A
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ii The condition in which certain colors are diminished as depth increases is called:
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-A: Refraction
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-B: Turbidity
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-C: Diffusion
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-D: Absorption - D
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ii Earplugs: ii
-A: Aid equalization of the middle of the ear
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-B: Protect against cold
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-C: Should never be worn while diving
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-D: Protect ears from squeeze - C
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ii Gauge pressure is defined as:
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-A: Hydrostatic pressure minus 1 ata
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-B: The pressure at the surface
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-C: The depth reading on a gauge
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-D: Absolute pressure minus 1 ata - D
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ii Sinus squeeze can be prevented by:
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-A: Valsalva technique
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-B: Wearing earplugs
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, -C: Tilting the divers head back and forth
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-D: Not diving with a cold - D
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ii The event that led to the use of the acronym SCUBA to describe diving was:
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Development of what and when? - Demand regulator in 1943 ii ii ii ii ii ii ii ii ii ii ii
ii Ear squeeze can be prevented by
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-A: Relaxing
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-B: All answers are correct
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-C: Never diving with a cold
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-D: rotating the jaw, swallowing or Valsalva - B
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ii The first symptom of a sinus squeeze is usually:
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-A: a dull pain deep within the head
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-B: a sharp pain at the base of the neck
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-C: a crushing pain high in the chest
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-D: a sharp pain above the eyes - D
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ii If you experience pain in the ear during descent:
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-A: Stop the descent and ascend till the pain stops
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-B: abort the dive
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-C: place a finger in the ear canal and gently massage the ear until the pain ceases
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-D: continue the descent while gently exhaling into the mask - A
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ii Body heat is lost at a rate of ___ than air. - 25-30 times faster
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ii Proper equalization techniques must be learned in order to:
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-A: prevent sinus squeeze
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-B: prevent ear pain
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-C: prevent squeeze injuries
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-D: all answers are correct - D
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Salt water weighs ___ pounds per cubic foot and freshwater weighs ___ pounds per cubic
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foot. - 64/62.5
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ii Underwater, the bending of light rays causes objects to appear to be: - Closer ii ii ii ii ii ii ii ii ii ii ii ii ii ii ii
ii The purpose of equalization is to:
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-A: ensure the uneven application of pressure between the water and air spaces in the
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body
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