SSI Open Water Diver Final Exam:
Sections 1 – 6 Questions and Answers
If you experience pain in the ear during descent:
A - Place a finger in the ear canal and gently massage the ear until the pain ceases
B - Stop the descent and ascend until the pain stops
C - Continue the descent while gently exhaling into the mask
D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops
Earplugs:
A - Protect against cold
B - Protect the ears from squeeze
C - Aid equalization of the middle ear
D - Should never be worn while diving - Answer- D - Should never be worn while diving
Body heat is lost underwater at a rate of _______ than in air.
A - 10 times slower
B - 25 to 30 times faster
C - 50 times faster
D - same - Answer- B - 25 to 30 times faster
Underwater, the bending of light rays causes objects to appear to be:
A - Farther away
B - Closer
C - The same as the surface
D - At an angle consistent with the bend of the light - Answer- B - Closer
,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)
A - 33 liter
B - 25 liter
C - 20 liter
D - 50 liter - Answer- A - 33 liter
The absolute pressure expressed in terms of bar at 30 meters in salt water is:
A - 4 bar
B - 3.5 bar
C - 3 bar
D - 2.5 bar - Answer- A - 4 bar
The condition in which certain colors are diminished as depth increases is called:
A - Absorption
B - Turbidity
C - Diffusion
D - Refraction - Answer- A - Absorption
Proper equalization techniques must be learned in order to:
A - Prevent ear pain
B - Prevent sinus squeeze
C - Prevent squeeze injuries
D - All answers are correct - Answer- D - All answers are correct
The event that led to the use of the acronym SCUBA to describe diving was:
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 - Answer- B - The development of
the demand regulator in 1943
Salt water weighs _______ kg per liter and freshwater weighs _______ kg per liter.
A - They both weigh the same
B - 1.025/1.0
C - 1.0/1.025
D - 14.7/14.3 - Answer- B - 1.025/1.0
Ear squeeze can be prevented by:
A - Rotating the jaw, swallowing or Valsalva
B - Relaxing
C - All answers are correct
D - Never diving with a cold - Answer- C - All answers are correct
Sinus squeeze can be prevented by:
A - Not diving with a cold
B - The Valsalva technique
C - Tilting the divers head back and forth
D - Wearing earplugs - Answer- A - Not diving with a cold
The purpose of equalization is to:
A - Introduce additional air into body air spaces in response to increasing external
pressure
B - Prevent water from entering air spaces in the body
C - Remove all fluids from body air spaces
Sections 1 – 6 Questions and Answers
If you experience pain in the ear during descent:
A - Place a finger in the ear canal and gently massage the ear until the pain ceases
B - Stop the descent and ascend until the pain stops
C - Continue the descent while gently exhaling into the mask
D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops
Earplugs:
A - Protect against cold
B - Protect the ears from squeeze
C - Aid equalization of the middle ear
D - Should never be worn while diving - Answer- D - Should never be worn while diving
Body heat is lost underwater at a rate of _______ than in air.
A - 10 times slower
B - 25 to 30 times faster
C - 50 times faster
D - same - Answer- B - 25 to 30 times faster
Underwater, the bending of light rays causes objects to appear to be:
A - Farther away
B - Closer
C - The same as the surface
D - At an angle consistent with the bend of the light - Answer- B - Closer
,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)
A - 33 liter
B - 25 liter
C - 20 liter
D - 50 liter - Answer- A - 33 liter
The absolute pressure expressed in terms of bar at 30 meters in salt water is:
A - 4 bar
B - 3.5 bar
C - 3 bar
D - 2.5 bar - Answer- A - 4 bar
The condition in which certain colors are diminished as depth increases is called:
A - Absorption
B - Turbidity
C - Diffusion
D - Refraction - Answer- A - Absorption
Proper equalization techniques must be learned in order to:
A - Prevent ear pain
B - Prevent sinus squeeze
C - Prevent squeeze injuries
D - All answers are correct - Answer- D - All answers are correct
The event that led to the use of the acronym SCUBA to describe diving was:
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 - Answer- B - The development of
the demand regulator in 1943
Salt water weighs _______ kg per liter and freshwater weighs _______ kg per liter.
A - They both weigh the same
B - 1.025/1.0
C - 1.0/1.025
D - 14.7/14.3 - Answer- B - 1.025/1.0
Ear squeeze can be prevented by:
A - Rotating the jaw, swallowing or Valsalva
B - Relaxing
C - All answers are correct
D - Never diving with a cold - Answer- C - All answers are correct
Sinus squeeze can be prevented by:
A - Not diving with a cold
B - The Valsalva technique
C - Tilting the divers head back and forth
D - Wearing earplugs - Answer- A - Not diving with a cold
The purpose of equalization is to:
A - Introduce additional air into body air spaces in response to increasing external
pressure
B - Prevent water from entering air spaces in the body
C - Remove all fluids from body air spaces
