SCUBA, SSI Open Water Diver Final Exam
2023(answered)
1). One atmosphere of pressure is defined as:
a) each 34 feet of depth in freshwater
b) each 33 ft. of depth in saltwater
c) 1 ata
d) all answers are correct.
Ans: All answers are correct
2). The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea water is:
a) 1 ata
b) 3 ata
c) 2 ata
d) 4 ata
Ans: 2 ata
3). Underwater, the bending of light rays causes objects to appear to be:
a) closer
b) the same as the surface
c) at an angle consistent with the bend of the light
d) farther away
Ans: Closer
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, 4). If you experience pain in your ears during descent:
a) place a finger in the ear canal and gently massage the ear until the pain ceases.
b) continue the descent while gently exhaling into the mask
c) abort the dive
d) stop the descent and ascend until the pain stops.
Ans: Stop the descent and ascend until the pain stops.
5). Sinus squeeze can be prevented by:
a) not diving with a cold
b) wearing earplugs
c) tilting the divers head back and forth
d) the valsalva technique
Ans: Not diving with a cold
6). Ear squeeze can be prevented by:
a) rotating the jaw, swallowing or valsalva
b) all answers are correct
c) never diving with a cold
d) relaxing
Ans: All answers are correct
7). The purpose of equalization is to:
a) remove all fluids from body air spaces
b) introduce additional air into body air spaces in response to increasing external pressure
c) ensure the uneven application of pressure between the water and air space in the body
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, d) prevent water from entering air spaces in the body
Ans: Introduce additional air into body air spaces in response to increasing external
pressure
8). Describing diving with the acronym scuba came from what event?
a) the development of air pumps in the 19th century
b) the development of the demand regulator in 1943
c) post-wwii equipment refinements
d) the invention of the diving helmet in circa 1800
Ans: The development of the demand regulator in 1943
9). The most efficient breathing pattern for scuba diving is:
a) a deep balanced inhalation followed by a long balanced exhalation without any pause
between inhale and exhale
b) rapid inhalation and exhalation cycles
c) long slow inhalation and faster exhalation
d) short shallow breaths
Ans: A deep balanced inhalation followed by a long balanced
10). Which of the following total diving system subsystems best describes the scuba unit?
a) the information system
b) the snorkeling system
c) the buoyancy system
d) the delivery system
Ans: The delivery system
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2023(answered)
1). One atmosphere of pressure is defined as:
a) each 34 feet of depth in freshwater
b) each 33 ft. of depth in saltwater
c) 1 ata
d) all answers are correct.
Ans: All answers are correct
2). The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea water is:
a) 1 ata
b) 3 ata
c) 2 ata
d) 4 ata
Ans: 2 ata
3). Underwater, the bending of light rays causes objects to appear to be:
a) closer
b) the same as the surface
c) at an angle consistent with the bend of the light
d) farther away
Ans: Closer
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, 4). If you experience pain in your ears during descent:
a) place a finger in the ear canal and gently massage the ear until the pain ceases.
b) continue the descent while gently exhaling into the mask
c) abort the dive
d) stop the descent and ascend until the pain stops.
Ans: Stop the descent and ascend until the pain stops.
5). Sinus squeeze can be prevented by:
a) not diving with a cold
b) wearing earplugs
c) tilting the divers head back and forth
d) the valsalva technique
Ans: Not diving with a cold
6). Ear squeeze can be prevented by:
a) rotating the jaw, swallowing or valsalva
b) all answers are correct
c) never diving with a cold
d) relaxing
Ans: All answers are correct
7). The purpose of equalization is to:
a) remove all fluids from body air spaces
b) introduce additional air into body air spaces in response to increasing external pressure
c) ensure the uneven application of pressure between the water and air space in the body
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, d) prevent water from entering air spaces in the body
Ans: Introduce additional air into body air spaces in response to increasing external
pressure
8). Describing diving with the acronym scuba came from what event?
a) the development of air pumps in the 19th century
b) the development of the demand regulator in 1943
c) post-wwii equipment refinements
d) the invention of the diving helmet in circa 1800
Ans: The development of the demand regulator in 1943
9). The most efficient breathing pattern for scuba diving is:
a) a deep balanced inhalation followed by a long balanced exhalation without any pause
between inhale and exhale
b) rapid inhalation and exhalation cycles
c) long slow inhalation and faster exhalation
d) short shallow breaths
Ans: A deep balanced inhalation followed by a long balanced
10). Which of the following total diving system subsystems best describes the scuba unit?
a) the information system
b) the snorkeling system
c) the buoyancy system
d) the delivery system
Ans: The delivery system
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