7/12/25, 9:38 PM Padi Open Water Diver
PADI OPEN WATER DIVER CERTIFICATION TEST BANK FINAL
EXAM COMPLETE 56 QUESTIONS AND CORRECT ANSWERS (100%
CORRECT VERIFIED ANSWERS) WITH RATIONALES\LATEST
UPDATE 2025-2026
Terms in this set (56)
1: If an object is neutrally D float.
buoyant (does not sink or
float) in fresh water, the same Salt water is heavier than fresh water because it has
object placed into salt dissolved minerals in it. This means it causes more
water would upward force (buoyancy) on an object. An object that
is
A sink. neutrally buoyant in fresh water would float in salt
B either sink or float. water because there is greater upward force. See
C do nothing. Being a Diver I - Buoyancy and Controlling
D float. Buoyancy.
2: I blow up a balloon, tie it B The balloon will get smaller and the air inside the
off, and take it to the balloon will be more dense (molecules move closer
bottom of the swimming together).
pool. What will happen to
the balloon and the air As water pressure increases, the volume of an air space
inside it? will decrease. This causes the density of the air inside
to increase and air molecules are pushed closer
A The balloon will get bigger together.
and the air inside the The balloon would get smaller and the air density inside
balloon will be less dense would be greater. See Being a Diver I - Water Pressure
(molecules move further and Air Volume Effects.
apart).
B The balloon will get smaller
and the air inside the
/ 1/27
,7/12/25, 10:02 PM open water diver PADI Final
balloon will be more dense
(molecules move closer
together).
C The balloon will get bigger
and the air inside the
balloon will be more dense.
D The balloon will get smaller
and the air inside the
balloon will be less dense.
2/27
, 7/12/25, 10:02 PM open water diver PADI Final
3: I turn a glass upside down, A become half the size it was at the surface.
trap the air in it by putting it
in water, and then I take the At 10 metres/33 feet, the pressure is 2 bar/ata. An air
glass down to 10 volume taken to this depth from the surface would
metres/33 feet. The air decrease and become half the size. See Being a Diver
space would I - Water
Pressure and Air Volume Effects.
A become half the size it
was at the surface.
B not change in size.
C become 1/3 the size it was
at the surface.
D become 2/3 the size it was
at the surface.
4: If I am not able to C a cold, allergy or another medical problem.
equalize (clear) my body air
spaces, it may be because I A cold, or any congestion, can block air passages in
have your ears and sinuses, making equalization difficult or
impossible. See Being a Diver I - The Effects of
A seasickness. Increasing Pressure on Body Air Spaces.
B heart disease and high
blood pressure.
C a cold, allergy or another
medical problem.
D anxiety.
5: If my ears or sinuses hurt C I am feeling a squeeze and need to equalize.
while I am
descending (going down), it Pain in your ears or sinuses means that they aren't
usually means
equalized. Stop your descent and ascend slightly to
relieve pressure on your ears. Then attempt to equalize
A my air spaces are equalized.
again. If you can't equalize, end the dive. See Being a
B my mask strap is too tight.
C I am feeling a squeeze and Diver I - The Effects of Increasing
Pressure on Body Air Spaces.
need to equalize.
D my mask is too small.
3/27
PADI OPEN WATER DIVER CERTIFICATION TEST BANK FINAL
EXAM COMPLETE 56 QUESTIONS AND CORRECT ANSWERS (100%
CORRECT VERIFIED ANSWERS) WITH RATIONALES\LATEST
UPDATE 2025-2026
Terms in this set (56)
1: If an object is neutrally D float.
buoyant (does not sink or
float) in fresh water, the same Salt water is heavier than fresh water because it has
object placed into salt dissolved minerals in it. This means it causes more
water would upward force (buoyancy) on an object. An object that
is
A sink. neutrally buoyant in fresh water would float in salt
B either sink or float. water because there is greater upward force. See
C do nothing. Being a Diver I - Buoyancy and Controlling
D float. Buoyancy.
2: I blow up a balloon, tie it B The balloon will get smaller and the air inside the
off, and take it to the balloon will be more dense (molecules move closer
bottom of the swimming together).
pool. What will happen to
the balloon and the air As water pressure increases, the volume of an air space
inside it? will decrease. This causes the density of the air inside
to increase and air molecules are pushed closer
A The balloon will get bigger together.
and the air inside the The balloon would get smaller and the air density inside
balloon will be less dense would be greater. See Being a Diver I - Water Pressure
(molecules move further and Air Volume Effects.
apart).
B The balloon will get smaller
and the air inside the
/ 1/27
,7/12/25, 10:02 PM open water diver PADI Final
balloon will be more dense
(molecules move closer
together).
C The balloon will get bigger
and the air inside the
balloon will be more dense.
D The balloon will get smaller
and the air inside the
balloon will be less dense.
2/27
, 7/12/25, 10:02 PM open water diver PADI Final
3: I turn a glass upside down, A become half the size it was at the surface.
trap the air in it by putting it
in water, and then I take the At 10 metres/33 feet, the pressure is 2 bar/ata. An air
glass down to 10 volume taken to this depth from the surface would
metres/33 feet. The air decrease and become half the size. See Being a Diver
space would I - Water
Pressure and Air Volume Effects.
A become half the size it
was at the surface.
B not change in size.
C become 1/3 the size it was
at the surface.
D become 2/3 the size it was
at the surface.
4: If I am not able to C a cold, allergy or another medical problem.
equalize (clear) my body air
spaces, it may be because I A cold, or any congestion, can block air passages in
have your ears and sinuses, making equalization difficult or
impossible. See Being a Diver I - The Effects of
A seasickness. Increasing Pressure on Body Air Spaces.
B heart disease and high
blood pressure.
C a cold, allergy or another
medical problem.
D anxiety.
5: If my ears or sinuses hurt C I am feeling a squeeze and need to equalize.
while I am
descending (going down), it Pain in your ears or sinuses means that they aren't
usually means
equalized. Stop your descent and ascend slightly to
relieve pressure on your ears. Then attempt to equalize
A my air spaces are equalized.
again. If you can't equalize, end the dive. See Being a
B my mask strap is too tight.
C I am feeling a squeeze and Diver I - The Effects of Increasing
Pressure on Body Air Spaces.
need to equalize.
D my mask is too small.
3/27
