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SSI open water final exam|53 Questions and Answers 2024
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SSI open water final exam|53Questions and Answers 2024
Which of the statements concerning sound transmission underwater is
incorrect?
-Sound will travel farther underwater then in air
-Divers find it difficult to locate the direction of a sound producing source
-Divers find it easy to talk to each other directly through water
-Sound travels four times faster underwater than in air - --Divers find it easy
to talk to each other directly through water
-The absolute pressure expressed in terms of atmospheres absolute at 33
feet in sea water is:
-2 ata
-1 ata
- 4 ata
- 3 ata - -2 ata
-The condition in which certain colors are diminished as depth increases is
called:
-Refraction
-Turbidity
-Diffusion
-Absorption - -Absorption
-Earplugs
-Aid equalization of the middle of the ear
- Protect against cold
-Should never be worn while diving
-Protect ears from squeeze - --Should never be worn while diving
-Gauge pressure is defined as:
- Hydrostatic pressure minus 1 ata
- The pressure at the surface
- The depth reading on a gauge
- Absolute pressure minus 1 ata - -- Absolute pressure minus 1 ata
-Sinus squeeze can be prevented by:
-Valsalva technique
- Wearing earplugs
- Tilting the divers head back and forth
- Not diving with a cold - -- Not diving with a cold
, -The event that led to the use of the acronym SCUBA to describe diving was:
- -The development of the demand regulator in 1943
-Ear squeeze can be prevented by
-Relaxing
-All answers are correct
- Never diving with a cold
- rotating the jaw, swallowing or Valsalva - --All answers are correct
-The first symptom of a sinus squeeze is usually:
- a dull pain deep within the head
- a sharp pain at the base of the neck
- a crushing pain high in the chest
- a sharp pain above the eyes - -- a sharp pain above the eyes
-If you experience pain in the ear during descent:
-Stop the descent and ascend till the pain stops
- abort the dive
-place a finger in the ear canal and gently massage the ear until the pain
ceases
- continue the descent while gently exhaling into the mask - -- continue the
descent while gently exhaling into the mask
-Body heat is lost at a rate of ___ than air. - -25-30 times faster
-Proper equalization techniques must be learned in order to:
-prevent sinus squeeze
-prevent ear pain
-prevent squeeze injuries
- all answers are correct - -- all answers are correct
-Salt water weighs ___ pounds per cubic foot and freshwater weighs ___
pounds per cubic foot. - -64/62.5
-Underwater, the bending of light rays causes objects to appear to be: - -
closer
-The purpose of equalization is to:
-ensure the uneven application of pressure between the water and air spaces
in the body
-prevent water from entering air spaces in the body
-introduce additional air into body air spaces in response to increasing
external pressure
-remove all fluids from body air spaces - --introduce additional air into body
air spaces in response to increasing external pressure
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