OPEN WATER DIVER COURSE
KNOWLEDGE REVIEW UPDATED
QUESTIONS AND ANSWERS FULL REVIEW
SHEET
●● During a descent, I try to equalize but discover I;m having trouble
doing so. Which of the following is correct?
a. Slow my descent, signal my buddy to slow down, and equalize more
forcefully
b. Stop my descent, signal my buddy, ascend slightly and try again
c. Continue my descent while equalizing repeatedly
d. Signal my buddy, ascend to the surface and start my descent over
Answer: b. Stop my descent, signal my buddy, ascend slightly and try
again
●● I should equalize
a. Early and often, before I feel discomfort
b. When I begin to feel discomfort
c. Only if I experience pain
Answer: a. Early and often, before I feel discomfort
●● I should not dive with a cold, nor use medications to dive with a cold
,a. True
b. False
Answer: a. True
●● The most important rule in scuba diving is:
a. Breathe continuously and never hold my breath
b. Always dive with a buddy
c. Keep my mask on while in the water, even at the surface
d. Check my SPG at least every couple of minutes
Answer: a. Breathe continuously and never hold my breath
●● Failure to follow the most important rule in scuba diving can cause
serious lung over expansion (lung rupture) injuries, which in turn can
cause paralysis and death
a. True
b. False
Answer: a. True
●● If I feel discomfort in a body air space while ascending, the correct
action is to:
a. Continue my ascent while blowing against blocked nostrils
b. Stop, descend slightly and give trapped air time to work its way out.
c. Descend at least 10metres/33feet, then resume my ascent
,Answer: b. Stop, descend slightly and give trapped air time to work its
way out.
●● My buddy and I are planning a dive to 18metres/60feet. We would
expect our air supply to last ________ at 10metres/33feet, all else being
the same
a. longer than
b. shorter than
c. the same as
Answer: b. shorter than
●● During a dive, I swim hard to keep up with the fish that interests me,
but shortly I begin to feel like I can't get enough air. The correct action
would be to:
a. Signal my buddy and head up to the surface
b. Use the regulator purge button to boost air flow
c. Stop all activity and rest to restore proper deep, slow breathing
Answer: c. Stop all activity and rest to restore proper deep, slow
breathing
●● An object that is neutrally buoyant in fresh water will _________ in
salt water
a. sink
b. float
, c. be neutrally buoyant
Answer: b. float
●● The three overall benefits of the buddy system are practicality, safety,
and fun
a. True
b. False
Answer: a. True
●● The primary consideration when choosing any piece of scuba gear
are:
a. suitability
b. brand
c. fit
d. comfort
Answer: a. suitability
c. fit
d. comfort
●● I'm planning to dive the following week and am checking my gear. I
put my kit together and notice that my regulator seems to breathe harder
than I remember. The appropriate action would be to:
KNOWLEDGE REVIEW UPDATED
QUESTIONS AND ANSWERS FULL REVIEW
SHEET
●● During a descent, I try to equalize but discover I;m having trouble
doing so. Which of the following is correct?
a. Slow my descent, signal my buddy to slow down, and equalize more
forcefully
b. Stop my descent, signal my buddy, ascend slightly and try again
c. Continue my descent while equalizing repeatedly
d. Signal my buddy, ascend to the surface and start my descent over
Answer: b. Stop my descent, signal my buddy, ascend slightly and try
again
●● I should equalize
a. Early and often, before I feel discomfort
b. When I begin to feel discomfort
c. Only if I experience pain
Answer: a. Early and often, before I feel discomfort
●● I should not dive with a cold, nor use medications to dive with a cold
,a. True
b. False
Answer: a. True
●● The most important rule in scuba diving is:
a. Breathe continuously and never hold my breath
b. Always dive with a buddy
c. Keep my mask on while in the water, even at the surface
d. Check my SPG at least every couple of minutes
Answer: a. Breathe continuously and never hold my breath
●● Failure to follow the most important rule in scuba diving can cause
serious lung over expansion (lung rupture) injuries, which in turn can
cause paralysis and death
a. True
b. False
Answer: a. True
●● If I feel discomfort in a body air space while ascending, the correct
action is to:
a. Continue my ascent while blowing against blocked nostrils
b. Stop, descend slightly and give trapped air time to work its way out.
c. Descend at least 10metres/33feet, then resume my ascent
,Answer: b. Stop, descend slightly and give trapped air time to work its
way out.
●● My buddy and I are planning a dive to 18metres/60feet. We would
expect our air supply to last ________ at 10metres/33feet, all else being
the same
a. longer than
b. shorter than
c. the same as
Answer: b. shorter than
●● During a dive, I swim hard to keep up with the fish that interests me,
but shortly I begin to feel like I can't get enough air. The correct action
would be to:
a. Signal my buddy and head up to the surface
b. Use the regulator purge button to boost air flow
c. Stop all activity and rest to restore proper deep, slow breathing
Answer: c. Stop all activity and rest to restore proper deep, slow
breathing
●● An object that is neutrally buoyant in fresh water will _________ in
salt water
a. sink
b. float
, c. be neutrally buoyant
Answer: b. float
●● The three overall benefits of the buddy system are practicality, safety,
and fun
a. True
b. False
Answer: a. True
●● The primary consideration when choosing any piece of scuba gear
are:
a. suitability
b. brand
c. fit
d. comfort
Answer: a. suitability
c. fit
d. comfort
●● I'm planning to dive the following week and am checking my gear. I
put my kit together and notice that my regulator seems to breathe harder
than I remember. The appropriate action would be to:
