SSI Open Water Diver Final Exam
Study online at https://quizlet.com/_1vaosd
1. Which of the statements concerning sound transmis- C
sion 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
2. The absolute pressure expressed in terms of atmos- A
pheres absolute at 33 feet in sea water is:
-A: 2 ata
-B:1 ata
-C: 4 ata
-D: 3 ata
3. The condition in which certain colors are diminished as D
depth increases is called:
-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption
4. Earplugs: C
-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
, SSI Open Water Diver Final Exam
Study online at https://quizlet.com/_1vaosd
5. Gauge pressure is defined as: D
-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
6. Sinus squeeze can be prevented by: D
-A: Valsalva technique
-B: Wearing earplugs
-C: Tilting the divers head back and forth
-D: Not diving with a cold
7. The event that led to the use of the acronym SCUBA to Demand regulator in 1943
describe diving was:
Development of what and when?
8. Ear squeeze can be prevented by B
-A: Relaxing
-B: All answers are correct
-C: Never diving with a cold
-D: rotating the jaw, swallowing or Valsalva
9. The first symptom of a sinus squeeze is usually: D
-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
10. A
Study online at https://quizlet.com/_1vaosd
1. Which of the statements concerning sound transmis- C
sion 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
2. The absolute pressure expressed in terms of atmos- A
pheres absolute at 33 feet in sea water is:
-A: 2 ata
-B:1 ata
-C: 4 ata
-D: 3 ata
3. The condition in which certain colors are diminished as D
depth increases is called:
-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption
4. Earplugs: C
-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
, SSI Open Water Diver Final Exam
Study online at https://quizlet.com/_1vaosd
5. Gauge pressure is defined as: D
-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
6. Sinus squeeze can be prevented by: D
-A: Valsalva technique
-B: Wearing earplugs
-C: Tilting the divers head back and forth
-D: Not diving with a cold
7. The event that led to the use of the acronym SCUBA to Demand regulator in 1943
describe diving was:
Development of what and when?
8. Ear squeeze can be prevented by B
-A: Relaxing
-B: All answers are correct
-C: Never diving with a cold
-D: rotating the jaw, swallowing or Valsalva
9. The first symptom of a sinus squeeze is usually: D
-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
10. A
