PADI Open Water Diver Final Exam
Questions And Correct Answers (Verified
Answers) 2026/2027
As you descend in water the pressure - CORRECT ANSWER -increases
A depth change of 10 meters/33 feet causes a pressure change of - CORRECT
ANSWER -2 bar/ata
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume
will be - CORRECT ANSWER -2 liters
The density of the air at 20 meters/66 feet would be _______ the density at
the surface of - CORRECT ANSWER -three times
A balloon fully inflated and sealed at 10 meters/33 feet, would probably
________ during ascent to the surface. - CORRECT ANSWER -expand/burst
As I descend, increasing pressure affects my _________ - CORRECT ANSWER
-mask, ears, sinuses
A squeeze is caused by - CORRECT ANSWER -a pressure imbalance between
the surrounding pressure and an air space
,Equalization is the process of - CORRECT ANSWER -adding air to an air space
I should equalize - CORRECT ANSWER -before i feel pain or discomfort
I'm descending and discovering I can't equalize. The first thing I would do is -
CORRECT ANSWER -stop my descent and signal my buddy/the instructor
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold
or allergy. I should - CORRECT ANSWER -cancel the dive until I'm well
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure (T/F) - CORRECT ANSWER -True
The most important rule in scuba diving is to - CORRECT ANSWER -breathe
continuously and never hold your breath
Failure to follow the most important rule in scuba diving can cause severe
lung overexpansion injuries, which can result in paralysis or death (T/F) -
CORRECT ANSWER -true
During ascent I feel discomfort in my ears. I should - CORRECT ANSWER -
stop, descend slightly and allow trapped air to work its way out
,Depth 0m/0ft what is the pressure, volume and density - CORRECT ANSWER
-1 bar/ata, 1 volume, 1x density
Depth 10m/33ft what is the pressure, volume and density - CORRECT
ANSWER -2 bar/ata, 1/2 volume, 2x density
Depth 20m/66ft what is the pressure, volume and density - CORRECT
ANSWER -3 bar/ata, 1/3 volume, 3x density
Depth 30m/99ft what is the pressure, volume and density - CORRECT
ANSWER -4 bar/ata, 1/4 volume, 4x density
As I descend, I need to equalize air spaces. Which of the following are
accepted ways of equalizing my ears?
a. Block my nose and attempt to gently blow through it.
b. Swallow and wiggle the jaw from side to side
c. Block my nose and blow forcefully for an extended period - CORRECT
ANSWER -Block my nose and attempt to gently blow through it + swallow
and wiggle the jaw from side to side
I should equalize
a. early and often, before I feel discomfort
b. when I begin to feel discomfort
, c. only if I experience pain - CORRECT ANSWER -early and often, before I feel
discomfort
I should not dive with a cold, nor use medications to dive with a cold. True or
False - CORRECT ANSWER -True
Failure to follow the most important rule in scuba diving can cause serious
lung overexpansion (lung rupture) injuries, which in turn can cause paralysis
and death. True or False - CORRECT ANSWER -True
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 to slow down and try again
c. Continue my descent while equalizing repeatedly
d. Signal my buddy, ascend to the surface and start my descent over the -
CORRECT ANSWER -Stop my descent, signal my buddy to slow down and try
again
My buddy and I are planning a dive to 18m/60ft. We would expect our air
supply to last _______ at 10m/33ft, all else being the same.
a. longer than
b. shorter than
c. the same as - CORRECT ANSWER -shorter than
Questions And Correct Answers (Verified
Answers) 2026/2027
As you descend in water the pressure - CORRECT ANSWER -increases
A depth change of 10 meters/33 feet causes a pressure change of - CORRECT
ANSWER -2 bar/ata
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume
will be - CORRECT ANSWER -2 liters
The density of the air at 20 meters/66 feet would be _______ the density at
the surface of - CORRECT ANSWER -three times
A balloon fully inflated and sealed at 10 meters/33 feet, would probably
________ during ascent to the surface. - CORRECT ANSWER -expand/burst
As I descend, increasing pressure affects my _________ - CORRECT ANSWER
-mask, ears, sinuses
A squeeze is caused by - CORRECT ANSWER -a pressure imbalance between
the surrounding pressure and an air space
,Equalization is the process of - CORRECT ANSWER -adding air to an air space
I should equalize - CORRECT ANSWER -before i feel pain or discomfort
I'm descending and discovering I can't equalize. The first thing I would do is -
CORRECT ANSWER -stop my descent and signal my buddy/the instructor
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold
or allergy. I should - CORRECT ANSWER -cancel the dive until I'm well
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure (T/F) - CORRECT ANSWER -True
The most important rule in scuba diving is to - CORRECT ANSWER -breathe
continuously and never hold your breath
Failure to follow the most important rule in scuba diving can cause severe
lung overexpansion injuries, which can result in paralysis or death (T/F) -
CORRECT ANSWER -true
During ascent I feel discomfort in my ears. I should - CORRECT ANSWER -
stop, descend slightly and allow trapped air to work its way out
,Depth 0m/0ft what is the pressure, volume and density - CORRECT ANSWER
-1 bar/ata, 1 volume, 1x density
Depth 10m/33ft what is the pressure, volume and density - CORRECT
ANSWER -2 bar/ata, 1/2 volume, 2x density
Depth 20m/66ft what is the pressure, volume and density - CORRECT
ANSWER -3 bar/ata, 1/3 volume, 3x density
Depth 30m/99ft what is the pressure, volume and density - CORRECT
ANSWER -4 bar/ata, 1/4 volume, 4x density
As I descend, I need to equalize air spaces. Which of the following are
accepted ways of equalizing my ears?
a. Block my nose and attempt to gently blow through it.
b. Swallow and wiggle the jaw from side to side
c. Block my nose and blow forcefully for an extended period - CORRECT
ANSWER -Block my nose and attempt to gently blow through it + swallow
and wiggle the jaw from side to side
I should equalize
a. early and often, before I feel discomfort
b. when I begin to feel discomfort
, c. only if I experience pain - CORRECT ANSWER -early and often, before I feel
discomfort
I should not dive with a cold, nor use medications to dive with a cold. True or
False - CORRECT ANSWER -True
Failure to follow the most important rule in scuba diving can cause serious
lung overexpansion (lung rupture) injuries, which in turn can cause paralysis
and death. True or False - CORRECT ANSWER -True
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 to slow down and try again
c. Continue my descent while equalizing repeatedly
d. Signal my buddy, ascend to the surface and start my descent over the -
CORRECT ANSWER -Stop my descent, signal my buddy to slow down and try
again
My buddy and I are planning a dive to 18m/60ft. We would expect our air
supply to last _______ at 10m/33ft, all else being the same.
a. longer than
b. shorter than
c. the same as - CORRECT ANSWER -shorter than
