Actual Exam 100 Questions And Correct Detailed

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SSI Open Water Diver Version A Newest 2025 Actual Exam 100 Questions And Correct Detailed Answers (verified Answers) ||Already Graded A+||Brand New Version!!

• The event that led to the use of the acronym SCUBA to

describe diving was:

• Post-WWII equipment refinements
• The development of the demand regulator in 1943
• The invention of the diving helmet in circa 1800
• The development of air pumps in the 19th century -

ANSWER-B. The development of the demand regulator in 1943

2. Absolute pressure is defined as:

• The weight of the water that surrounds a diver
• The total pressure exerted on an object
• The pressure at the surface plus 1 bar
• All answers are correct - ANSWER-B. The total pressure

exerted on an object

3. Gauge pressure is defined as: 1 / 4

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• Absolute pressure minus 1 bar
• The pressure at the surface
• The depth reading on a gauge
• Hydrostatic pressure minus 1 bar - ANSWER-A. Absolute

pressure minus 1 bar

4. One atmosphere of pressure is defined as:

• Each 10 meter of depth in sea water
• Each 10.2 meter of depth in freshwater
• All answers are correct
• 1 bar - ANSWER-C. All answers are correct

• Salt water weighs ___ kg per liter and freshwater weighs ___

kg per liter.

A. 1.0/1.025

• They both weigh the same

C. 14.7/14.3

D. 1.025/1.0 - ANSWER-D. 1.025/1.0

• The absolute pressure expressed in terms of bar at 30 meters

in salt water is: 2 / 4

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• 4 bar
• 2.5 bar
• 3.5 bar
• 3 bar - ANSWER-A. 4 bar

• The absolute pressure expressed in terms of bar at 10 meters

in sea water is:

• 1 bar
• 4 bar
• 3 bar
• 2 bar - ANSWER-D. 2 bar

• If a flexible air-filled container has a volume of 100 liter on

the surface, what would the volume be at 20 meter in sea water?(rounded off )

• 50 liter
• 33 liter
• 20 liter
• 25 liter - ANSWER-B. 33 liter
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• The greatest relative pressure change in sea water takes place

between ____ and ____ meters.

A. 10/20

B. 30/60

C. 0/10

D. 20/40 - ANSWER-C. 0/10

10. The purpose of equalization is to:

• Prevent water from entering air spaces in the body
• Remove all fluids from body air spaces
• Ensure the uneven application of pressure between the water

and air spaces in the body

• Introduce additional air into body air spaces in response to

increasing external pressure - ANSWER-D. Introduce additional air into body air spaces in response to increasing external pressure

11. Proper equalization techniques must be learned in order to:

• Prevent sinus squeeze
• Prevent ear pain
• Prevent squeeze injuries
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