EXAM PARCTICE TEST QUESTIONS
AND ANSWERS 2023 NEW SOLUTION
GUIDE
One atmosphere of pressure is defined as:
a) Each 34 feet of depth in freshwater
b) each 33 ft. of depth in saltwater
c) 1 ata
d) All answers are correct. - ANS All answers are correct
The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea
water is:
a) 1 ata
b) 3 ata
c) 2 ata
d) 4 ata - ANS 2 ata
Underwater, the bending of light rays causes objects to appear to be:
a) closer
b) the same as the surface
c) At an angle consistent with the bend of the light
d) Farther away - ANS Closer
If you experience pain in your ears during descent:
a) Place a finger in the ear canal and gently massage the ear until the pain ceases.
b) Continue the descent while gently exhaling into the mask
,c) Abort the dive
d) Stop the descent and ascend until the pain stops. - ANS Stop the descent and
ascend until the pain stops.
Sinus squeeze can be prevented by:
a) Not diving with a cold
b) Wearing earplugs
c) Tilting the divers head back and forth
d) The Valsalva technique - ANS Not diving with a cold
Ear squeeze can be prevented by:
a) Rotating the jaw, swallowing or Valsalva
b) All answers are correct
c) Never diving with a cold
d) Relaxing - ANS All answers are correct
The purpose of equalization is to:
a) Remove all fluids from body air spaces
b) Introduce additional air into body air spaces in response to increasing external
pressure
c) Ensure the uneven application of pressure between the water and air space in the
body
d) Prevent water from entering air spaces in the body - ANS Introduce additional air into
body air spaces in response to increasing external pressure
Describing diving with the acronym SCUBA came from what event?
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 - ANS The development of the
demand regulator in 1943
The most efficient breathing pattern for scuba diving is:
a) A deep balanced inhalation followed by a long balanced exhalation without any
pause between inhale and exhale
b) Rapid inhalation and exhalation cycles
c) Long slow inhalation and faster exhalation
d) Short shallow breaths - ANS A deep balanced inhalation followed by a long balanced
Which of the following Total Diving System subsystems best describes the SCUBA
unit?
a) The information system
b) The snorkeling system
c) The buoyancy system
d) The delivery system - ANS The delivery system
Assuming a consistent air consumption rate, diving at a pressure of 4 ata will use __ as
much air as diving at 2 ata.
a) 4 times
b) 8 times
c) 5 times
d) 2 times - ANS 2 times
An object immersed in water will be buoyed upward by a force ______ the weight of the
water it displaces.
a) 2 times
b) equal to
c) greater than
d) less than - ANS equal to