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SSI Open Water Diver Final Exam with 100% Correct Answers 2023
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SSI Open Water Diver Final Exam with 100% Correct Answers 2023Which 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
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
The condition in which certain colors are diminished as depth increases is called:
-A: Refraction -B: Turbidity
-C: Diffusion
-D: Absorption - Correct Answer-D
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
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 - Correct Answer-D
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
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
Ear squeeze can be prevented by -A: Relaxing -B: All answers are correct
-C: Never diving with a cold
-D: rotating the jaw, swallowing or Valsalva - Correct Answer-B
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
If you experience pain in the ear during descent:
-A: Stop the descent and ascend till the pain stops
-B: abort the dive
-C: place a finger in the ear canal and gently massage the ear until the pain ceases
-D: continue the descent while gently exhaling into the mask - Correct Answer-A
Body heat is lost at a rate of ___ than air. - Correct Answer-25-30 times faster
Proper equalization techniques must be learned in order to:
-A: prevent sinus squeeze
-B: prevent ear pain
-C: prevent squeeze injuries
-D: all answers are correct - Correct Answer-D
Salt water weighs ___ pounds per cubic foot and freshwater weighs ___ pounds per cubic foot. - Correct Answer-64/62.5
Underwater, the bending of light rays causes objects to appear to be: - Correct Answer-
Closer
The purpose of equalization is to:
-A: ensure the uneven application of pressure between the water and air spaces in the body
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