PADI Open Water Diver Final Exam
Questions and answers | Updated
2024/25 RATED A+
As you descend in water the pressure - increases
II II II II II II II II II II II
II IIA depth change of 10 meters/33 feet causes a pressure change of - 2 bar/ata
II II II II II II II II II II II II II II II II II
II IIif you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - 2 liters
II II II II II II II II II II II II II II II II II II II II II II II
The density of the air at 20 meters/66 feet would be _______ the density at the surface of
II II II II II II II II II II II II II II II II II II II
- three times
II II II II II II
A balloon fully inflated and sealed at 10 meters/33 feet, would probably ________ during
II II II II II II II II II II II II II II II
ascent to the surface. - expand/burst
II II II II II II II II II
II IIAs I descend, increasing pressure affects my _________ - mask, ears, sinuses
II II II II II II II II II II II II II II
A squeeze is caused by - a pressure imbalance between the surrounding pressure and
II II II II II II II II II II II II II II II II II II
an air space
II II II
II IIEqualization is the process of - adding air to an air space II II II II II II II II II II II II II II
II III should equalize - before i feel pain or discomfort
II II II II II II II II II II II II
I'm descending and discovering I can't equalize. The first thing I would do is - stop my
II II II II II II II II II II II II II II II II II II II II II
descent and signal my buddy/the instructor
II II II II II II
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I
II II II II II II II II II II II II II II II II II II II II II II II
should - cancel the dive until I'm well
II II II II II II II II II II II
When scuba diving, normal breathing keeps your lungs equalized to the surrounding
II II II II II II II II II II II II II
pressure (T/F) - True
II II II II II II II
The most important rule in scuba diving is to - breathe continuously and never hold your
II II II II II II II II II II II II II II II II II II II II
breath
II
Failure to follow the most important rule in scuba diving can cause severe lung
II II II II II II II II II II II II II II II
overexpansion injuries, which can result in paralysis or death (T/F) - true
II II II II II II II II II II II II II II II
During ascent I feel discomfort in my ears. I should - stop, descend slightly and allow
II II II II II II II II II II II II II II II II II II II II
trapped air to work its way out
II II II II II II II
,II IIDepth 0m/0ft what is the pressure, volume and density - 1 bar/ata, 1 volume, 1x density
II II II II II II II II II II II II II II II II II II
Depth 10m/33ft what is the pressure, volume and density - 2 bar/ata, 1/2 volume, 2x
II II II II II II II II II II II II II II II II II II II
density
II
Depth 20m/66ft what is the pressure, volume and density - 3 bar/ata, 1/3 volume, 3x
II II II II II II II II II II II II II II II II II II II
density
II
Depth 30m/99ft what is the pressure, volume and density - 4 bar/ata, 1/4 volume, 4x
II II II II II II II II II II II II II II II II II II II
density
II
As I descend, I need to equalize air spaces. Which of the following are accepted ways of
II II II II II II II II II II II II II II II II II II
equalizing my ears?
II II II
a. Block my nose and attempt to gently blow through it.
II II II II II II II II II II
b. Swallow and wiggle the jaw from side to side
II II II II II II II II II
c. Block my nose and blow forcefully for an extended period - Block my nose and attempt
II II II II II II II II II II II II II II II II II II II
to gently blow through it + swallow and wiggle the jaw from side to side
II II II II II II II II II II II II II II II
I should equalize
II II II II
a. early and often, before I feel discomfort
II II II II II II II
b. when I begin to feel discomfort
II II II II II II
c. only if I experience pain - early and often, before I feel discomfort
II II II II II II II II II II II II II II II II
I should not dive with a cold, nor use medications to dive with a cold. True or False -
II II II II II II II II II II II II II II II II II II II II II II II
True
II
Failure to follow the most important rule in scuba diving can cause serious lung
II II II II II II II II II II II II II II II
overexpansion (lung rupture) injuries, which in turn can cause paralysis and death. True
II II II II II II II II II II II II II
or False - True
II II II II II II II
During a descent, I try to equalize but discover I'm having trouble doing so. Which of the
II II II II II II II II II II II II II II II II II II
following is correct?
II II II
a. Slow my descent, signal my buddy to slow down and equalize more forcefully
II II II II II II II II II II II II II
b. Stop my descent, signal my buddy to slow down and try again
II II II II II II II II II II II II
c. Continue my descent while equalizing repeatedly
II II II II II II
d. Signal my buddy, ascend to the surface and start my descent over the - Stop my
II II II II II II II II II II II II II II II II II II II
descent, signal my buddy to slow down and try again
II II II II II II II II II II
My buddy and I are planning a dive to 18m/60ft. We would expect our air supply to last
II II II II II II II II II II II II II II II II II II II
_______ at 10m/33ft, all else being the same.
II II II II II II II II
a. longer than
II II
b. shorter than
II II II
c. the same as - shorter than
II II II II II II II II II
During a dive, I swim hard to keep up with the fish that interests me, but shortly I begin to
II II II II II II II II II II II II II II II II II II II II II
feel like I can't get enough air. The correct action would be to:
II II II II II II II II II II II II II
, a. Signal my buddy and head up to the surface
II II II II II II II II II
b. Use the regulator purge button to boost air flow
II II II II II II II II II
c. Stop all activity and rest to restore proper deep, slow breathing - Stop all activity and
II II II II II II II II II II II II II II II II II II II
rest to restore proper deep, slow breathing
II II II II II II II
An object that is neutrally buoyant in fresh water will ______ in salt water.
II II II II II II II II II II II II II II II
a. sink II
b. float II
c. be neutrally buoyant - float
II II II II II II II II
II IIThe ocean has more - buoyancy compared to fresh water
II II II II II II II II II II II II
The three overall benefits of the buddy system are practicality, safety, and fun. True or
II II II II II II II II II II II II II II II II
False - True
II II II II II II
The primary considerations when choosing any piece of scuba gear are:
II II II II II II II II II II II II
a. suitability
II
b. brand II
c. fit II
d. comfort - suitability, fit, and comfort
II II II II II II II II II
I'm planning to dive the following week and am checking my gear. I put my kit together
II II II II II II II II II II II II II II II II II II
and notice that my regulator seems to breathe harder than I remember. The appropriate
II II II II II II II II II II II II II II
action would be to:
II II II II
a. Have it inspected and serviced as needed by a professional before using it
II II II II II II II II II II II II II
b. Go ahead and use it, but limit my dive depth to 10metres/33feet
II II II II II II II II II II II II
c. Wash it in fresh water and see if the problem persists - have it inspected and serviced
II II II II II II II II II II II II II II II II II II II II
as needed by a professional before using it
II II II II II II II II
II IIThere is no way to use a DIN regulator on a yoke cylinder valve. True/False - False
II II II II II II II II II II II II II II II II II II II
It is important to master buoyancy control because it allows me to control whether I
II II II II II II II II II II II II II II II II
descend, float or am neutrally buoyant. I adjust my buoyancy frequently while diving.
II II II II II II II II II II II II II
True/False - True
II II II II II II
I take a colorful fish identification slate with me while diving. Looking at the slate
II II II II II II II II II II II II II II II II
underwater at 12metres/40feet, I would expect the slate to look
II II II II II II II II II II
a. smaller/farther away
II II
b. more colorful
II II
c. less colorful
II II
d. larger/closer - less colorful and larger/closer
II II II II II II II II II
While underwater, I want to move efficiently by:
II II II II II II II II II
a. moving as quickly as possible
II II II II II
b. being streamlined
II II
c. having just a little more weight than I actually need
II II II II II II II II II II
Questions and answers | Updated
2024/25 RATED A+
As you descend in water the pressure - increases
II II II II II II II II II II II
II IIA depth change of 10 meters/33 feet causes a pressure change of - 2 bar/ata
II II II II II II II II II II II II II II II II II
II IIif you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - 2 liters
II II II II II II II II II II II II II II II II II II II II II II II
The density of the air at 20 meters/66 feet would be _______ the density at the surface of
II II II II II II II II II II II II II II II II II II II
- three times
II II II II II II
A balloon fully inflated and sealed at 10 meters/33 feet, would probably ________ during
II II II II II II II II II II II II II II II
ascent to the surface. - expand/burst
II II II II II II II II II
II IIAs I descend, increasing pressure affects my _________ - mask, ears, sinuses
II II II II II II II II II II II II II II
A squeeze is caused by - a pressure imbalance between the surrounding pressure and
II II II II II II II II II II II II II II II II II II
an air space
II II II
II IIEqualization is the process of - adding air to an air space II II II II II II II II II II II II II II
II III should equalize - before i feel pain or discomfort
II II II II II II II II II II II II
I'm descending and discovering I can't equalize. The first thing I would do is - stop my
II II II II II II II II II II II II II II II II II II II II II
descent and signal my buddy/the instructor
II II II II II II
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I
II II II II II II II II II II II II II II II II II II II II II II II
should - cancel the dive until I'm well
II II II II II II II II II II II
When scuba diving, normal breathing keeps your lungs equalized to the surrounding
II II II II II II II II II II II II II
pressure (T/F) - True
II II II II II II II
The most important rule in scuba diving is to - breathe continuously and never hold your
II II II II II II II II II II II II II II II II II II II II
breath
II
Failure to follow the most important rule in scuba diving can cause severe lung
II II II II II II II II II II II II II II II
overexpansion injuries, which can result in paralysis or death (T/F) - true
II II II II II II II II II II II II II II II
During ascent I feel discomfort in my ears. I should - stop, descend slightly and allow
II II II II II II II II II II II II II II II II II II II II
trapped air to work its way out
II II II II II II II
,II IIDepth 0m/0ft what is the pressure, volume and density - 1 bar/ata, 1 volume, 1x density
II II II II II II II II II II II II II II II II II II
Depth 10m/33ft what is the pressure, volume and density - 2 bar/ata, 1/2 volume, 2x
II II II II II II II II II II II II II II II II II II II
density
II
Depth 20m/66ft what is the pressure, volume and density - 3 bar/ata, 1/3 volume, 3x
II II II II II II II II II II II II II II II II II II II
density
II
Depth 30m/99ft what is the pressure, volume and density - 4 bar/ata, 1/4 volume, 4x
II II II II II II II II II II II II II II II II II II II
density
II
As I descend, I need to equalize air spaces. Which of the following are accepted ways of
II II II II II II II II II II II II II II II II II II
equalizing my ears?
II II II
a. Block my nose and attempt to gently blow through it.
II II II II II II II II II II
b. Swallow and wiggle the jaw from side to side
II II II II II II II II II
c. Block my nose and blow forcefully for an extended period - Block my nose and attempt
II II II II II II II II II II II II II II II II II II II
to gently blow through it + swallow and wiggle the jaw from side to side
II II II II II II II II II II II II II II II
I should equalize
II II II II
a. early and often, before I feel discomfort
II II II II II II II
b. when I begin to feel discomfort
II II II II II II
c. only if I experience pain - early and often, before I feel discomfort
II II II II II II II II II II II II II II II II
I should not dive with a cold, nor use medications to dive with a cold. True or False -
II II II II II II II II II II II II II II II II II II II II II II II
True
II
Failure to follow the most important rule in scuba diving can cause serious lung
II II II II II II II II II II II II II II II
overexpansion (lung rupture) injuries, which in turn can cause paralysis and death. True
II II II II II II II II II II II II II
or False - True
II II II II II II II
During a descent, I try to equalize but discover I'm having trouble doing so. Which of the
II II II II II II II II II II II II II II II II II II
following is correct?
II II II
a. Slow my descent, signal my buddy to slow down and equalize more forcefully
II II II II II II II II II II II II II
b. Stop my descent, signal my buddy to slow down and try again
II II II II II II II II II II II II
c. Continue my descent while equalizing repeatedly
II II II II II II
d. Signal my buddy, ascend to the surface and start my descent over the - Stop my
II II II II II II II II II II II II II II II II II II II
descent, signal my buddy to slow down and try again
II II II II II II II II II II
My buddy and I are planning a dive to 18m/60ft. We would expect our air supply to last
II II II II II II II II II II II II II II II II II II II
_______ at 10m/33ft, all else being the same.
II II II II II II II II
a. longer than
II II
b. shorter than
II II II
c. the same as - shorter than
II II II II II II II II II
During a dive, I swim hard to keep up with the fish that interests me, but shortly I begin to
II II II II II II II II II II II II II II II II II II II II II
feel like I can't get enough air. The correct action would be to:
II II II II II II II II II II II II II
, a. Signal my buddy and head up to the surface
II II II II II II II II II
b. Use the regulator purge button to boost air flow
II II II II II II II II II
c. Stop all activity and rest to restore proper deep, slow breathing - Stop all activity and
II II II II II II II II II II II II II II II II II II II
rest to restore proper deep, slow breathing
II II II II II II II
An object that is neutrally buoyant in fresh water will ______ in salt water.
II II II II II II II II II II II II II II II
a. sink II
b. float II
c. be neutrally buoyant - float
II II II II II II II II
II IIThe ocean has more - buoyancy compared to fresh water
II II II II II II II II II II II II
The three overall benefits of the buddy system are practicality, safety, and fun. True or
II II II II II II II II II II II II II II II II
False - True
II II II II II II
The primary considerations when choosing any piece of scuba gear are:
II II II II II II II II II II II II
a. suitability
II
b. brand II
c. fit II
d. comfort - suitability, fit, and comfort
II II II II II II II II II
I'm planning to dive the following week and am checking my gear. I put my kit together
II II II II II II II II II II II II II II II II II II
and notice that my regulator seems to breathe harder than I remember. The appropriate
II II II II II II II II II II II II II II
action would be to:
II II II II
a. Have it inspected and serviced as needed by a professional before using it
II II II II II II II II II II II II II
b. Go ahead and use it, but limit my dive depth to 10metres/33feet
II II II II II II II II II II II II
c. Wash it in fresh water and see if the problem persists - have it inspected and serviced
II II II II II II II II II II II II II II II II II II II II
as needed by a professional before using it
II II II II II II II II
II IIThere is no way to use a DIN regulator on a yoke cylinder valve. True/False - False
II II II II II II II II II II II II II II II II II II II
It is important to master buoyancy control because it allows me to control whether I
II II II II II II II II II II II II II II II II
descend, float or am neutrally buoyant. I adjust my buoyancy frequently while diving.
II II II II II II II II II II II II II
True/False - True
II II II II II II
I take a colorful fish identification slate with me while diving. Looking at the slate
II II II II II II II II II II II II II II II II
underwater at 12metres/40feet, I would expect the slate to look
II II II II II II II II II II
a. smaller/farther away
II II
b. more colorful
II II
c. less colorful
II II
d. larger/closer - less colorful and larger/closer
II II II II II II II II II
While underwater, I want to move efficiently by:
II II II II II II II II II
a. moving as quickly as possible
II II II II II
b. being streamlined
II II
c. having just a little more weight than I actually need
II II II II II II II II II II
