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PADI, Open Water Diver, Final Exam Review Questions and Answers (Latest 2024)
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PADI, Open Water Diver, Final Exam Review Questions and Answers (Latest 2024)
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PADI, Open Water Diver, Final ExamReview Questions and Answers (Latest
2024)
1) If an object is neutrally buoyant (does not sink or float) in
fresh water, the same object placed into salt water would
A sink.
B either sink or float.
C do nothing.
D float. - Correct Answer ✅D float.
Salt water is heavier than fresh water because it has
dissolved minerals in it. This means it causes more upward
force (buoyancy) on an object. An object that is 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.
2) I blow up a balloon, tie it off, and take it to the bottom of
the swimming pool. What will happen to the balloon and the
air inside it?
,PADI, Open Water Diver, Final Exam
Review Questions and Answers (Latest
2024)
A The balloon will get bigger and the air inside the balloon
will be less dense (molecules move further apart).
B The balloon will get smaller and the air inside the 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. - Correct Answer ✅B The balloon will get
smaller and the air inside the balloon will be more dense
(molecules move closer together).
As water pressure increases, the volume of an air space will
decrease. This causes the density of the air inside to increase
and air molecules are pushed closer together. The balloon
would get smaller and the air density inside would be greater.
See Being a Diver I - Water Pressure and Air Volume Effects.
3) I turn a glass upside down, trap the air in it by putting it in
water, and then I take the glass down to 10 meters. The air
space would
,PADI, Open Water Diver, Final Exam
Review Questions and Answers (Latest
2024)
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. - Correct
Answer ✅A become half the size it was at the surface.
At 10 meters, the pressure is 2 bar. An air volume taken to
this depth from the surface would decrease and become half
the size.
See Being a Diver I - Water Pressure and Air Volume Effects.
4) If I am not able to equalize (clear) my body air spaces, it
may be because I have
A seasickness.
B heart disease and high blood pressure.
C a cold, allergy or another medical problem.
, PADI, Open Water Diver, Final Exam
Review Questions and Answers (Latest
2024)
D anxiety. - Correct Answer ✅C A cold, allergy or another
medical problem.
A cold, or any congestion, can block air passages in your ears
and sinuses, making equalization difficult or impossible.
See Being a Diver I - The Effects of Increasing Pressure on
Body Air Spaces.
5) If my ears or sinuses hurt while I am descending (going
down), it usually means
A my air spaces are equalized.
B my mask strap is too tight.
C I am feeling a squeeze and need to equalize.
D my mask is too small. - Correct Answer ✅C I am feeling a
squeeze and need to equalize.
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