SSI Open Water Diver Final Exam Latest
Version Graded A Updated April 2023
Which 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 - - 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 - - A
-The condition in which certain colors are diminished as depth increases is called:
-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption - - 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 - - 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 - - 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 - - D
-The event that led to the use of the acronym SCUBA to describe diving was:
Development of what and when? - - 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 - - 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 - - D
Version Graded A Updated April 2023
Which 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 - - 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 - - A
-The condition in which certain colors are diminished as depth increases is called:
-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption - - 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 - - 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 - - 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 - - D
-The event that led to the use of the acronym SCUBA to describe diving was:
Development of what and when? - - 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 - - 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 - - D
