SSI PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS
GUARANTEED TO PASS.
◉ Underwater, the bending of light rays causes objects to appear to be:
1. farther away
2. the same as the surface
3. at an angle consistent with the bend of the light
4. closer. Ans: 4. closer
◉ The greatest relative pressure change in sea water takes place between
____ and ____ feet.
1. 66/99
2. 99/132
3. 33/66
4. 0/33. Ans: 4. 0/33
◉ The first symptom of a sinus squeeze is usually:
,1. dull pain deep within the head
2. crushing pain high in the chest
3. sharp pain at the base of the neck
4. sharp pain or wedging sensation above the eyes. Ans: 4. sharp pain or
wedging sensation above the eyes
◉ Which of the statements concerning sound transmission underwater is
correct?
1. divers find it difficult to locate the direction of a sound producing
source
2. sound travels four times faster underwater than in air
3. sound will travel farther underwater than in air
4. all answers are correct. Ans: 4. all answers are correct
◉ The absolute pressure expressed in terms of atmospheres absolute at
33 feet in sea water is:
1. 4 ata
2. 1 ata
3. 3 ata
4. 2 ata. Ans: 4. 2 ata
,◉ Gauge pressure is defined as:
1. the pressure at the surface
2. absolute pressure minus 1 ata
3. absolute pressure plus 1 ata
4. hyrdostatic pressure minus 1 ata. Ans: 2. absolute pressure minus 1 ata
◉ The absolute pressure expressed in terms of atmospheres absolute at
99 feet in salt water is:
1. 2.5 ata
2. 4 ata
3. 3.5 ata
4. 3 ata. Ans: 2. 4 ata
◉ Body heat is lost underwater ___ than in air.
1. same
2. 10 times slower
3. 25 to 30 times faster
4. 50 times faster. Ans: 3. 25 to 30 times faster
, ◉ One atmosphere of pressure is defined as:
1. all answers are correct
2. 1 ata
3. each 34 feet of depth in freshwater
4. each 34 feet of depth in sea water. Ans: 1. all answers are correct
◉ If a flexible air-filled container has a volume of 40 cu ft on the
surface, what would the volume be at 99 feet in sea water? (rounded off)
1. 10 cu ft
2. 20 cu ft
3. 25 cu ft
4. 60 cu ft. Ans: 1. 10 cu ft
◉ Proper equalization techniques must be learned in order to:
1. all answers are correct
2. prevent squeeze injuries
3. prevent sinus squeeze
4. prevent ear pain. Ans: 1. all answers are correct
QUESTIONS WITH ANSWERS
GUARANTEED TO PASS.
◉ Underwater, the bending of light rays causes objects to appear to be:
1. farther away
2. the same as the surface
3. at an angle consistent with the bend of the light
4. closer. Ans: 4. closer
◉ The greatest relative pressure change in sea water takes place between
____ and ____ feet.
1. 66/99
2. 99/132
3. 33/66
4. 0/33. Ans: 4. 0/33
◉ The first symptom of a sinus squeeze is usually:
,1. dull pain deep within the head
2. crushing pain high in the chest
3. sharp pain at the base of the neck
4. sharp pain or wedging sensation above the eyes. Ans: 4. sharp pain or
wedging sensation above the eyes
◉ Which of the statements concerning sound transmission underwater is
correct?
1. divers find it difficult to locate the direction of a sound producing
source
2. sound travels four times faster underwater than in air
3. sound will travel farther underwater than in air
4. all answers are correct. Ans: 4. all answers are correct
◉ The absolute pressure expressed in terms of atmospheres absolute at
33 feet in sea water is:
1. 4 ata
2. 1 ata
3. 3 ata
4. 2 ata. Ans: 4. 2 ata
,◉ Gauge pressure is defined as:
1. the pressure at the surface
2. absolute pressure minus 1 ata
3. absolute pressure plus 1 ata
4. hyrdostatic pressure minus 1 ata. Ans: 2. absolute pressure minus 1 ata
◉ The absolute pressure expressed in terms of atmospheres absolute at
99 feet in salt water is:
1. 2.5 ata
2. 4 ata
3. 3.5 ata
4. 3 ata. Ans: 2. 4 ata
◉ Body heat is lost underwater ___ than in air.
1. same
2. 10 times slower
3. 25 to 30 times faster
4. 50 times faster. Ans: 3. 25 to 30 times faster
, ◉ One atmosphere of pressure is defined as:
1. all answers are correct
2. 1 ata
3. each 34 feet of depth in freshwater
4. each 34 feet of depth in sea water. Ans: 1. all answers are correct
◉ If a flexible air-filled container has a volume of 40 cu ft on the
surface, what would the volume be at 99 feet in sea water? (rounded off)
1. 10 cu ft
2. 20 cu ft
3. 25 cu ft
4. 60 cu ft. Ans: 1. 10 cu ft
◉ Proper equalization techniques must be learned in order to:
1. all answers are correct
2. prevent squeeze injuries
3. prevent sinus squeeze
4. prevent ear pain. Ans: 1. all answers are correct
