PADI Open Water Diver Study Guide: Final Exam
Review
1. 1) If an object is neutrally buoyant (does
not D 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.
2. 2) I blow up a balloon, tie it off, and take
it to B the bottom of the swimming pool.
What will happen to the balloon and the
air inside it?
A The balloon will get bigger and the
air in- side 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 (mol- ecules move closer
together).
C The balloon will get bigger and the air
in- side the balloon will be more
dense.
D The balloon will get smaller and the air
inside the balloon will be less dense.
3. 3) I turn a glass upside down, trap the air A
in it by putting it in water, and then I
take the glass down to 10 meters. The
air space would
A become half the size it was at the surface.
B not change in size.
, PADI Open Water Diver Study Guide: Final Exam
Review
C become 1/3 the size it was at the surface.
D become 2/3 the size it was at the surface.
4. 4) If I am not able to equalize (clear) my body C
air spaces, it may be because I have
A seasickness.
B heart disease and high blood pressure.
C a cold, allergy or another medical
prob- lem.
D anxiety.
5. 5) If my ears or sinuses hurt while I am de- C
scending (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
equal- ize.
D my mask is too small.
6. 6) The best place for me to position an alter- B
nate air source is
A loose by my side so I can find it fast.
B in the triangle area formed by my chin
and the lower corners of my rib cage.
C to the base of my cylinder.
D to the back of my BCD between my
shoul- der blades and waist.
7. 7) Lung overexpansion injuries can be D
caused by
, PADI Open Water Diver Study Guide: Final Exam
Review
A scuba diving without a buddy.
B continuing a dive when not
properly weighted.
C not drinking enough water before
scuba diving.
D holding my breath while scuba diving.
8. 8) If my cylinder of air lasts 60 minutes
while B I am at the surface breathing
normally, as- suming all else is the
same, how long will it last at 20 meters
breathing normally?
A 60 minutes
B 20 minutes
C 15 minutes
D 12 minutes
9. 9) How often should I take my scuba
cylinder A
to be visually inspected by my dive center?
A Once a year.
B Once every two years.
C Every six months.
D Every five years.
10. 10) The difference between DIN valves andD
yoke valves is that DIN valves
A are made from durable plastic.
B contain a spring-operated shutoff
valve that is held open by cylinder
, PADI Open Water Diver Study Guide: Final Exam
Review
pressure.
C have an o-ring in them.
Review
1. 1) If an object is neutrally buoyant (does
not D 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.
2. 2) I blow up a balloon, tie it off, and take
it to B the bottom of the swimming pool.
What will happen to the balloon and the
air inside it?
A The balloon will get bigger and the
air in- side 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 (mol- ecules move closer
together).
C The balloon will get bigger and the air
in- side the balloon will be more
dense.
D The balloon will get smaller and the air
inside the balloon will be less dense.
3. 3) I turn a glass upside down, trap the air A
in it by putting it in water, and then I
take the glass down to 10 meters. The
air space would
A become half the size it was at the surface.
B not change in size.
, PADI Open Water Diver Study Guide: Final Exam
Review
C become 1/3 the size it was at the surface.
D become 2/3 the size it was at the surface.
4. 4) If I am not able to equalize (clear) my body C
air spaces, it may be because I have
A seasickness.
B heart disease and high blood pressure.
C a cold, allergy or another medical
prob- lem.
D anxiety.
5. 5) If my ears or sinuses hurt while I am de- C
scending (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
equal- ize.
D my mask is too small.
6. 6) The best place for me to position an alter- B
nate air source is
A loose by my side so I can find it fast.
B in the triangle area formed by my chin
and the lower corners of my rib cage.
C to the base of my cylinder.
D to the back of my BCD between my
shoul- der blades and waist.
7. 7) Lung overexpansion injuries can be D
caused by
, PADI Open Water Diver Study Guide: Final Exam
Review
A scuba diving without a buddy.
B continuing a dive when not
properly weighted.
C not drinking enough water before
scuba diving.
D holding my breath while scuba diving.
8. 8) If my cylinder of air lasts 60 minutes
while B I am at the surface breathing
normally, as- suming all else is the
same, how long will it last at 20 meters
breathing normally?
A 60 minutes
B 20 minutes
C 15 minutes
D 12 minutes
9. 9) How often should I take my scuba
cylinder A
to be visually inspected by my dive center?
A Once a year.
B Once every two years.
C Every six months.
D Every five years.
10. 10) The difference between DIN valves andD
yoke valves is that DIN valves
A are made from durable plastic.
B contain a spring-operated shutoff
valve that is held open by cylinder
, PADI Open Water Diver Study Guide: Final Exam
Review
pressure.
C have an o-ring in them.
