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SSI Open Water Final Exam With 100% Correct Answers 2023
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SSI Open Water Final Exam With 100% Correct Answers 2023
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SSI Open Water Final Exam With 100% Correct Answers 2023Which 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 - Correct Answer--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 - Correct Answer-2 ata
The condition in which certain colors are diminished as depth increases is called:
-Refraction -Turbidity
-Diffusion
-Absorption - Correct Answer-Absorption
Earplugs -Aid equalization of the middle of the ear - Protect against cold
-Should never be worn while diving -Protect ears from squeeze - Correct Answer--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 - Correct Answer-- 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 - Correct Answer-- Not diving with a cold
The event that led to the use of the acronym SCUBA to describe diving was: - Correct Answer-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 - Correct Answer--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 - Correct Answer-- 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 - Correct Answer-- continue the descent while gently exhaling into the mask
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:
-prevent sinus squeeze
-prevent ear pain
-prevent squeeze injuries
- all answers are correct - Correct Answer-- all answers are correct
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:
-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 - Correct Answer--introduce additional air into body air spaces in response to increasing external pressure
One atmosphere of pressure is defined as -1 ata
-each 34ft of depth in freshwater
-each 33ft of depth in saltwater
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