SSI Open Water Diver Final Exam | 2025/2026 Edition | Verified Exam Questions with Correct Answers

, 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 - CORRECT ANSWERS-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 - CORRECT ANSWERS-A

The condition in which certain colors are diminished as depth increases is called:

-A: Refraction
-B: Turbidity
-C: Diffusion
-D: Absorption - CORRECT ANSWERS-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 - CORRECT ANSWERS-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 - CORRECT ANSWERS-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 - CORRECT ANSWERS-D

The event that led to the use of the acronym SCUBA to describe diving was:

Development of what and when? - CORRECT ANSWERS-Demand regulator in 1943