PADI Open Water Exam Questions With In-Depth Solutions
A depth change of 10 metres/33 feet causes a pressure change of __________ -
accurate answers-1 bar/ata
As you descend in water the pressure __________ - accurate answers-increases
If you take 6 litres of air from the surface to 20 metres/66 feet, the volume
will be __________ litres. - accurate answers-2
The density of the air in the previous question would be __________ times the
density at the surface. - accurate answers-3
A balloon fully inflated and sealed at 10 metres/33 feet, would probably
__________ during ascent to the surface. - accurate answers-burst
As I descend, increasing pressure affects my - accurate answers-Ears, sinuses,
mask
A squeeze is caused by - accurate answers-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - accurate answers-adding air to an air space
I should equalize - accurate answers-Before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is -
accurate answers-stop my descent and signal my buddy/the instructor.
I equalize gently because an extended, forceful equalization can cause
permanent damage to my ears and hearing. T/F - accurate answers-True
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold
or allergy. I should... - accurate answers-Cancel the dive until I am well.
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure. T/F - accurate answers-True
If during ascent you were to hold your breath, blocking your airway, your
lungs would over expand. They would be much like a balloon filled and sealed
,at depth, which expanding air would burst during ascent. - accurate answers-
IMPORTANT NOTE
Expanding air can cause serious lung overexpansion (lung rupture) injuries.
For this reason, the most important rule in scuba diving is to breathe
continuously and never, ever hold your breath. - accurate answers-
IMPORTANT NOTE
This rule is so important, that any time your regulator is not in your mouth
you exhale a slow, steady bubble stream so you aren't holding your breath. -
accurate answers-IMPORTANT NOTE
The most important rule in scuba diving is - accurate answers-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 -
accurate answers-True
During ascent I feel discomfort in my ears. I should... - accurate answers-stop,
descend slightly and allow trapped air to work its way out.
My body responds to anxiety with increased breathing, but slow breathing
helps reduce anxiety. T/F - accurate answers-True
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
__________ at 6 metres/20 feet. - accurate answers-faster than
Buoyancy is a force that pushes an object in water upward. T/F - accurate
answers-True
My sunglasses case falls out of my pocket into the water, but fortunately, it
floats so I retrieve it. I would say my sunglasses case is... - accurate answers-
positively buoyant.
Salt water causes more buoyancy than fresh water because it is less dense and
weighs less. T/F - accurate answers-False
, To control my buoyancy, normally I will use my... - accurate answers-weight
system and my BCD
When I descend, my buoyancy tends to __________. When I ascend, it tends to
__________. - accurate answers-decrease, increase
Underwater, when I inhale, my buoyancy - accurate answers-increases slightly
It is important to master buoyancy control because it affects almost
everything I do in and underwater. T/F - accurate answers-True
In recreational diving, the buddy system means diving with another diver or
divers in a team that provides assistance and safety benefits. T/F - accurate
answers-True
Overall benefits of the buddy system include - accurate answers-practicality,
safety and fun
The three most important considerations in choosing scuba equipmentare
suitability, fit and ____________. - accurate answers-comfort
Getting the service my gear needs may be a consideration when choosing
equipment. T/F - accurate answers-True
Before each use, I should _____________ my equipment. - accurate answers-
inspect
I need a mask because - accurate answers-my eyes must be in air to focus
My mask encloses my nose so I can - accurate answers-equalize the mask
From among masks that fit me, I should choose a mask that fits as far away
from my face as possible. T/F - accurate answers-False
I want to adjust my mask so the strap rests - accurate answers-above my ears,
over the crown of my head.
Snorkels are standard equipment for scuba diving because they allow me to
breathe with my face in the water, or in rough conditions, without wasting my
A depth change of 10 metres/33 feet causes a pressure change of __________ -
accurate answers-1 bar/ata
As you descend in water the pressure __________ - accurate answers-increases
If you take 6 litres of air from the surface to 20 metres/66 feet, the volume
will be __________ litres. - accurate answers-2
The density of the air in the previous question would be __________ times the
density at the surface. - accurate answers-3
A balloon fully inflated and sealed at 10 metres/33 feet, would probably
__________ during ascent to the surface. - accurate answers-burst
As I descend, increasing pressure affects my - accurate answers-Ears, sinuses,
mask
A squeeze is caused by - accurate answers-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - accurate answers-adding air to an air space
I should equalize - accurate answers-Before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is -
accurate answers-stop my descent and signal my buddy/the instructor.
I equalize gently because an extended, forceful equalization can cause
permanent damage to my ears and hearing. T/F - accurate answers-True
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold
or allergy. I should... - accurate answers-Cancel the dive until I am well.
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure. T/F - accurate answers-True
If during ascent you were to hold your breath, blocking your airway, your
lungs would over expand. They would be much like a balloon filled and sealed
,at depth, which expanding air would burst during ascent. - accurate answers-
IMPORTANT NOTE
Expanding air can cause serious lung overexpansion (lung rupture) injuries.
For this reason, the most important rule in scuba diving is to breathe
continuously and never, ever hold your breath. - accurate answers-
IMPORTANT NOTE
This rule is so important, that any time your regulator is not in your mouth
you exhale a slow, steady bubble stream so you aren't holding your breath. -
accurate answers-IMPORTANT NOTE
The most important rule in scuba diving is - accurate answers-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 -
accurate answers-True
During ascent I feel discomfort in my ears. I should... - accurate answers-stop,
descend slightly and allow trapped air to work its way out.
My body responds to anxiety with increased breathing, but slow breathing
helps reduce anxiety. T/F - accurate answers-True
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
__________ at 6 metres/20 feet. - accurate answers-faster than
Buoyancy is a force that pushes an object in water upward. T/F - accurate
answers-True
My sunglasses case falls out of my pocket into the water, but fortunately, it
floats so I retrieve it. I would say my sunglasses case is... - accurate answers-
positively buoyant.
Salt water causes more buoyancy than fresh water because it is less dense and
weighs less. T/F - accurate answers-False
, To control my buoyancy, normally I will use my... - accurate answers-weight
system and my BCD
When I descend, my buoyancy tends to __________. When I ascend, it tends to
__________. - accurate answers-decrease, increase
Underwater, when I inhale, my buoyancy - accurate answers-increases slightly
It is important to master buoyancy control because it affects almost
everything I do in and underwater. T/F - accurate answers-True
In recreational diving, the buddy system means diving with another diver or
divers in a team that provides assistance and safety benefits. T/F - accurate
answers-True
Overall benefits of the buddy system include - accurate answers-practicality,
safety and fun
The three most important considerations in choosing scuba equipmentare
suitability, fit and ____________. - accurate answers-comfort
Getting the service my gear needs may be a consideration when choosing
equipment. T/F - accurate answers-True
Before each use, I should _____________ my equipment. - accurate answers-
inspect
I need a mask because - accurate answers-my eyes must be in air to focus
My mask encloses my nose so I can - accurate answers-equalize the mask
From among masks that fit me, I should choose a mask that fits as far away
from my face as possible. T/F - accurate answers-False
I want to adjust my mask so the strap rests - accurate answers-above my ears,
over the crown of my head.
Snorkels are standard equipment for scuba diving because they allow me to
breathe with my face in the water, or in rough conditions, without wasting my
