PADI OPEN WATER DIVER FINAL EXAM QUESTIONS
WITH COMPLETE SOLUTION
As you descend in water the pressure
increases
A depth change of 10 meters/33 feet causes a pressure change of
2 bar/ata
if you take 6 liters of air from the surface to 20 metres/66 feet, the
volume will be
2 liters
The density of the air at 20 meters/66 feet would be _______ the
density at the surface of
three times
A balloon fully inflated and sealed at 10 meters/33 feet, would
probably ________ during ascent to the surface.
expand/burst
As I descend, increasing pressure affects my _________
mask, ears, sinuses
A squeeze is caused by
a pressure imbalance between the surrounding pressure and an air space
Equalization is the process of
adding air to an air space
I should equalize
before i feel pain or discomfort
I'm descending and discovering I can't equalize. The first thing I
would do is
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
cancel the dive until I'm well
When scuba diving, normal breathing keeps your lungs equalized to
the surrounding pressure (T/F)
True
The most important rule in scuba diving is to
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)
,true
During ascent I feel discomfort in my ears. I should
stop, descend slightly and allow trapped air to work its way out
Depth 0m/0ft what is the pressure, volume and density
1 bar/ata, 1 volume, 1x density
Depth 10m/33ft what is the pressure, volume and density
2 bar/ata, 1/2 volume, 2x density
Depth 20m/66ft what is the pressure, volume and density
3 bar/ata, 1/3 volume, 3x density
Depth 30m/99ft what is the pressure, volume and density
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
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
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
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
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
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
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
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
float
The ocean has more
buoyancy compared to fresh water
The three overall benefits of the buddy system are practicality, safety,
and fun. True or False
True
The primary considerations when choosing any piece of scuba gear
are:
a. suitability
b. brand
c. fit
d. comfort
suitability, fit, and 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:
a. Have it inspected and serviced as needed by a professional before
using it
b. Go ahead and use it, but limit my dive depth to 10metres/33feet
c. Wash it in fresh water and see if the problem persists
have it inspected and serviced as needed by a professional before using it
WITH COMPLETE SOLUTION
As you descend in water the pressure
increases
A depth change of 10 meters/33 feet causes a pressure change of
2 bar/ata
if you take 6 liters of air from the surface to 20 metres/66 feet, the
volume will be
2 liters
The density of the air at 20 meters/66 feet would be _______ the
density at the surface of
three times
A balloon fully inflated and sealed at 10 meters/33 feet, would
probably ________ during ascent to the surface.
expand/burst
As I descend, increasing pressure affects my _________
mask, ears, sinuses
A squeeze is caused by
a pressure imbalance between the surrounding pressure and an air space
Equalization is the process of
adding air to an air space
I should equalize
before i feel pain or discomfort
I'm descending and discovering I can't equalize. The first thing I
would do is
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
cancel the dive until I'm well
When scuba diving, normal breathing keeps your lungs equalized to
the surrounding pressure (T/F)
True
The most important rule in scuba diving is to
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)
,true
During ascent I feel discomfort in my ears. I should
stop, descend slightly and allow trapped air to work its way out
Depth 0m/0ft what is the pressure, volume and density
1 bar/ata, 1 volume, 1x density
Depth 10m/33ft what is the pressure, volume and density
2 bar/ata, 1/2 volume, 2x density
Depth 20m/66ft what is the pressure, volume and density
3 bar/ata, 1/3 volume, 3x density
Depth 30m/99ft what is the pressure, volume and density
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
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
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
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
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
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
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
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
float
The ocean has more
buoyancy compared to fresh water
The three overall benefits of the buddy system are practicality, safety,
and fun. True or False
True
The primary considerations when choosing any piece of scuba gear
are:
a. suitability
b. brand
c. fit
d. comfort
suitability, fit, and 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:
a. Have it inspected and serviced as needed by a professional before
using it
b. Go ahead and use it, but limit my dive depth to 10metres/33feet
c. Wash it in fresh water and see if the problem persists
have it inspected and serviced as needed by a professional before using it
