7/12/25, 8:27 PM PADI, Open Water Diver, Final Exam Review
PADI, Open Water Diver, Final Exam Review complete
questions and correct detailed answers \verified 100%
ALREADY GRADED A+
D float. 1) If an object is neutrally buoyant (does not sink or float)
in fresh water, the same object placed into salt water
Salt water is heavier than would
fresh water because it has
dissolved minerals in it. This A sink.
means it causes more B either sink or float.
upward force (buoyancy) on C do nothing.
an object. An object that is D float.
neutrally buoyant in fresh
water would float in salt
water because there is
greater
upward force.
See Being a Diver I -
Buoyancy and Controlling
Buoyancy.
B The balloon will get smaller 2) I blow up a balloon, tie it off, and take it to the
and the air inside the bottom of the swimming pool. What will happen to
balloon will be more dense the balloon and the air inside it?
(molecules move closer
together).
A The balloon will get bigger and the air inside the
As water pressure increases, balloon will be less dense (molecules move further
the volume of an air space apart).
will decrease. This causes B The balloon will get smaller and the air inside the
the density of the air inside balloon will be more dense (molecules move closer
to increase and air together).
C The balloon will get bigger and the air inside the balloon will
be more dense.
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,7/12/25, 8:27 PM PADI, Open Water Diver, Final Exam Review
molecules are pushed closer D The balloon will get smaller and the air inside the balloon will
together. The balloon be less dense.
would get smaller and the
air density inside would
be greater.
See Being a Diver I -
Water Pressure and Air
Volume Effects.
A become half the size it 3) I turn a glass upside down, trap the air in it by putting
was at the surface. it in water, and then I take the glass down to 10
meters. The air space would
At 10 meters, the pressure is 2
bar. An air A become half the size it was at the surface.
volume taken to this depth B not change in size.
from the surface would C become 1/3 the size it was at the surface.
decrease and become half D become 2/3 the size it was at the surface.
the size.
See Being a Diver I -
Water Pressure and Air
Volume Effects.
C A cold, allergy or another 4) If I am not able to equalize (clear) my body air spaces, it may
medical problem. be because I have
A seasickness.
A cold, or any congestion,
B heart disease and high blood pressure.
can block air passages in
C a cold, allergy or another medical problem.
your ears and sinuses, making
D anxiety.
equalization difficult or
impossible.
See Being a Diver I - The
Effects of
Increasing Pressure on Body
Air Spaces.
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, 7/12/25, 8:27 PM PADI, Open Water Diver, Final Exam Review
C I am feeling a squeeze and 5) If my ears or sinuses hurt while I am descending (going down),
need to equalize. it usually means
A my air spaces are equalized.
Pain in your ears or sinuses
B my mask strap is too tight.
means that they aren't
C I am feeling a squeeze and need to equalize.
equalized. Stop your
D my mask is too small.
descent and
ascend slightly to relieve
pressure on your ears. Then
attempt to equalize again. If
you can't equalize, end
the dive.
See Being a Diver I - The
Effects of
Increasing Pressure on Body
Air Spaces.
B In the triangle area 6) The best place for me to position an alternate air source is
formed by my chin and
the lower corners of my A loose by my side so I can find it fast.
rib cage. B in the triangle area formed by my chin and the lower corners of
my rib cage.
C to the base of my cylinder.
Your alternate air source
D to the back of my BCD between my shoulder blades and waist.
attaches with a quick release
in the triangle area formed by
your chin and the lower
corners of your rib cage.
Avoid letting your alternate
air
source dangle unsecured from
your kit.
See Equipment I - Regulators.
3/29
PADI, Open Water Diver, Final Exam Review complete
questions and correct detailed answers \verified 100%
ALREADY GRADED A+
D float. 1) If an object is neutrally buoyant (does not sink or float)
in fresh water, the same object placed into salt water
Salt water is heavier than would
fresh water because it has
dissolved minerals in it. This A sink.
means it causes more B either sink or float.
upward force (buoyancy) on C do nothing.
an object. An object that is D float.
neutrally buoyant in fresh
water would float in salt
water because there is
greater
upward force.
See Being a Diver I -
Buoyancy and Controlling
Buoyancy.
B The balloon will get smaller 2) I blow up a balloon, tie it off, and take it to the
and the air inside the bottom of the swimming pool. What will happen to
balloon will be more dense the balloon and the air inside it?
(molecules move closer
together).
A The balloon will get bigger and the air inside the
As water pressure increases, balloon will be less dense (molecules move further
the volume of an air space apart).
will decrease. This causes B The balloon will get smaller and the air inside the
the density of the air inside balloon will be more dense (molecules move closer
to increase and air together).
C The balloon will get bigger and the air inside the balloon will
be more dense.
1/29
,7/12/25, 8:27 PM PADI, Open Water Diver, Final Exam Review
molecules are pushed closer D The balloon will get smaller and the air inside the balloon will
together. The balloon be less dense.
would get smaller and the
air density inside would
be greater.
See Being a Diver I -
Water Pressure and Air
Volume Effects.
A become half the size it 3) I turn a glass upside down, trap the air in it by putting
was at the surface. it in water, and then I take the glass down to 10
meters. The air space would
At 10 meters, the pressure is 2
bar. An air A become half the size it was at the surface.
volume taken to this depth B not change in size.
from the surface would C become 1/3 the size it was at the surface.
decrease and become half D become 2/3 the size it was at the surface.
the size.
See Being a Diver I -
Water Pressure and Air
Volume Effects.
C A cold, allergy or another 4) If I am not able to equalize (clear) my body air spaces, it may
medical problem. be because I have
A seasickness.
A cold, or any congestion,
B heart disease and high blood pressure.
can block air passages in
C a cold, allergy or another medical problem.
your ears and sinuses, making
D anxiety.
equalization difficult or
impossible.
See Being a Diver I - The
Effects of
Increasing Pressure on Body
Air Spaces.
2/29
, 7/12/25, 8:27 PM PADI, Open Water Diver, Final Exam Review
C I am feeling a squeeze and 5) If my ears or sinuses hurt while I am descending (going down),
need to equalize. it usually means
A my air spaces are equalized.
Pain in your ears or sinuses
B my mask strap is too tight.
means that they aren't
C I am feeling a squeeze and need to equalize.
equalized. Stop your
D my mask is too small.
descent and
ascend slightly to relieve
pressure on your ears. Then
attempt to equalize again. If
you can't equalize, end
the dive.
See Being a Diver I - The
Effects of
Increasing Pressure on Body
Air Spaces.
B In the triangle area 6) The best place for me to position an alternate air source is
formed by my chin and
the lower corners of my A loose by my side so I can find it fast.
rib cage. B in the triangle area formed by my chin and the lower corners of
my rib cage.
C to the base of my cylinder.
Your alternate air source
D to the back of my BCD between my shoulder blades and waist.
attaches with a quick release
in the triangle area formed by
your chin and the lower
corners of your rib cage.
Avoid letting your alternate
air
source dangle unsecured from
your kit.
See Equipment I - Regulators.
3/29
