PADI Open Water Exam 2025 Questions And
Correct Answers Already Graded A+
A depth change of 10 metres/33 feet causes a pressure change
of __________ - ✔ANASWER✔-1 bar/ata
As you descend in water the pressure __________ -
✔ANASWER✔-increases
If you take 6 litres of air from the surface to 20 metres/66 feet,
the volume will be __________ litres. - ✔ANASWER✔-2
,The density of the air in the previous question would be
__________ times the density at the surface. - ✔ANASWER✔-3
A balloon fully inflated and sealed at 10 metres/33 feet, would
probably __________ during ascent to the surface. -
✔ANASWER✔-burst
As I descend, increasing pressure affects my - ✔ANASWER✔-
Ears, sinuses, mask
A squeeze is caused by - ✔ANASWER✔-a pressure imbalance
between the surrounding pressure and an air space
Equalization is the process of - ✔ANASWER✔-adding air to an
air space
I should equalize - ✔ANASWER✔-Before I feel pain or
discomfort
I'm descending and discover I can't equalize. The first thing I
would do is - ✔ANASWER✔-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 -
✔ANASWER✔-True
On a day I plan to go diving, I wake up with my sinuses blocked
due to a cold or allergy. I should... - ✔ANASWER✔-Cancel the
dive until I am well.
When scuba diving, normal breathing keeps your lungs
equalized to the surrounding pressure. T/F - ✔ANASWER✔-
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. - ✔ANASWER✔-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. - ✔ANASWER✔-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. - ✔ANASWER✔-IMPORTANT NOTE
The most important rule in scuba diving is - ✔ANASWER✔-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 - ✔ANASWER✔-True
During ascent I feel discomfort in my ears. I should... -
✔ANASWER✔-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 - ✔ANASWER✔-True
My buddy and I descend to 12 metres/40 feet. I would expect
to use my air __________ at 6 metres/20 feet. - ✔ANASWER✔-
faster than
Correct Answers Already Graded A+
A depth change of 10 metres/33 feet causes a pressure change
of __________ - ✔ANASWER✔-1 bar/ata
As you descend in water the pressure __________ -
✔ANASWER✔-increases
If you take 6 litres of air from the surface to 20 metres/66 feet,
the volume will be __________ litres. - ✔ANASWER✔-2
,The density of the air in the previous question would be
__________ times the density at the surface. - ✔ANASWER✔-3
A balloon fully inflated and sealed at 10 metres/33 feet, would
probably __________ during ascent to the surface. -
✔ANASWER✔-burst
As I descend, increasing pressure affects my - ✔ANASWER✔-
Ears, sinuses, mask
A squeeze is caused by - ✔ANASWER✔-a pressure imbalance
between the surrounding pressure and an air space
Equalization is the process of - ✔ANASWER✔-adding air to an
air space
I should equalize - ✔ANASWER✔-Before I feel pain or
discomfort
I'm descending and discover I can't equalize. The first thing I
would do is - ✔ANASWER✔-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 -
✔ANASWER✔-True
On a day I plan to go diving, I wake up with my sinuses blocked
due to a cold or allergy. I should... - ✔ANASWER✔-Cancel the
dive until I am well.
When scuba diving, normal breathing keeps your lungs
equalized to the surrounding pressure. T/F - ✔ANASWER✔-
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. - ✔ANASWER✔-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. - ✔ANASWER✔-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. - ✔ANASWER✔-IMPORTANT NOTE
The most important rule in scuba diving is - ✔ANASWER✔-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 - ✔ANASWER✔-True
During ascent I feel discomfort in my ears. I should... -
✔ANASWER✔-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 - ✔ANASWER✔-True
My buddy and I descend to 12 metres/40 feet. I would expect
to use my air __________ at 6 metres/20 feet. - ✔ANASWER✔-
faster than
