SSI Open Water Diver Written Exam with precise detailed answers

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SSI Open Water Diver Written Exam with precise
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detailed answers ||




Proper equalization techniques must be learned in order to:
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A. Prevent squeeze injuries
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B. Prevent ear pain
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C. Prevent sinus squeeze
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D. All answers are correct - ✔✔D. All answers are correct
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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. Divers find it easy to talk to
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each other directly through water
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Saltwater weighs ___ pounds per cubic foot and freshwater weighs ___pounds per cubic foot.
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A. 65/68
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B. 54/50
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C. 64/62.5
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D. They both weight the same - ✔✔C. 64/62.5
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Earplugs:
A. Aid equalization of the middle of the ear
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B. Should never be worn while diving
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C. Protect against cold
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D. Prevent ears from squeeze - ✔✔B. Should never be worn while diving
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The condition in which certain colors are diminished as depth increases is called:
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A. Absorption
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B. Refraction
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C. Turbidity
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D. Diffusion - ✔✔A. Absorption
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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 sharp pain or wedging sensation above the eyes
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D. A crushing pain high in the chest - ✔✔C. A sharp pain or wedging sensation above the eyes
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Ear squeeze can be prevented by:
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A. Relaxing
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B. Never diving with a cold
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C. Rotating the jaw, swallowing, or Valsalva
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D. All answers are correct - ✔✔D. All answers are correct
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Sinus squeeze can be prevented by:
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A. Not diving with a cold
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B. Valsalva technique
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C. Wearing ear plugs
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D. Tilting the divers head back and forth - ✔✔A. Not diving with a cold
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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 body
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B. Prevent water from entering air spaces in the body
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C. Introduce additional air into body air spaces in response to increasing external pressure
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D. Remove all fluids from body air spaces - ✔✔C. Introduce additional air into body air spaces in
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response to increasing external pressure
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Absolute pressure is defined as: || || || ||




A. Total Pressure Exerted on an Object
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B. The weight of the water that surrounds the diver
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C. The pressure at the surface plus 1 ata
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D. All Answers are correct - ✔✔A. Total Pressure Exerted on an Object
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One atmosphere of pressure is defined as:
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A. 1 bar
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B. Each 34ft of depth in fresh water
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C. Each 33ft of depth in sea water
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D. All answers are correct - ✔✔D. All answers are correct
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Gauge pressure is defined as:
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A. The depth reading on a gauge
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B. The pressure at the surface
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C. Hydrostatic pressure minus 1 ata
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D. Absolute pressure minus 1 ata - ✔✔D. Absolute pressure minus 1 ata
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The greatest relative pressure change in seawater takes place between ____ and ____ feet.
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A. 0/33
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B. 33/66
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C. 66/99
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