PADI OPEN WATER DIVER FINAL EXAM
PADI OPEN WATER DIVER FINAL EXAM
NEWEST 2025/2026 COMPLETE ALL 300
QUESTIONS AND CORRECT DETAILED
ANSWERS |ALREADY GRADED
A+||ALREADY GRADED A+
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.
D
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?
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.
B
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
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.
A
A+ TEST BANK 1
, PADI OPEN WATER DIVER FINAL EXAM
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.
D anxiety.
C
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.
C
6) The best place for me to position an alternate 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 shoulder blades and waist.
B
7) Lung overexpansion injuries can be caused by
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.
D
8) If my cylinder of air lasts 60 minutes while I am at the surface breathing normally, assuming 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
B
9) How often should I take my scuba cylinder to be visually inspected by my dive center?
A+ TEST BANK 2
, PADI OPEN WATER DIVER FINAL EXAM
A Once a year.
B Once every two years.
C Every six months.
D Every five years.
A
10) The difference between DIN valves and 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 pressure.
C have an o-ring in them.
D have threaded openings to screw the regulator into.
D
11) Which of the following is part of proper care for my scuba cylinder?
A Sand and repaint it every year.
B Dry it in the sun.
C Keep some air in it.
D Have it pressure tested every month.
C
12) Refer to the regulator picture. Each regulator part has a number next to it. Please choose the
correct number for the choices below.
regulator first stage,
regulator second stage
alternate air source second stage
low pressure inflator hose for the BCD
instrument console/gauges/computer
1. regulator first stage, 2. regulator second stage, 3. alternate air source second stage, 4. instrument
console/gauges/computer, 5. low pressure inflator hose for the BCD
13) When I look at things underwater they often seem ___________ than they look on the surface.
A larger and/or nearer
B larger and/or further away
C smaller and/or further away
D smaller and/or nearer
A
14) ___________ travels faster in water than it does in air. This is why you cannot easily tell where it
comes from.
A+ TEST BANK 3
, PADI OPEN WATER DIVER FINAL EXAM
A Light
B Current
C Aquatic life
D Sound
D
15) Unless there are laws that say differently, I should stay within ___________ of my dive flag. Boats
should stay at least 100 ft away.
A 200 ft.
B 100 ft.
C 50 ft.
D 17 ft.
C
16) If I work too hard and find it difficult to breathe underwater, I should
A inflate my BCD.
B stop all activity and rest, holding onto something for support if possible.
C swim immediately to my buddy and signal for help.
D do a controlled emergency swimming ascent (CESA - swimming up to the surface saying the ah-h-h-
h sound).
B
17) As I descend (go down), my wet suit will
A compress (feel thinner) from water pressure, and I will lose buoyancy and warmth.
B expand (feel thicker) from water pressure, and I will gain buoyancy and warmth.
C remain the same thickness from the water pressure, and there will be no change in warmth.
D expand (feel thicker) from water pressure, and I will lose buoyancy and warmth.
A
18) I know I am properly weighted for diving if I
A float at neck level with my BCD about half full while I am holding a normal breath of air.
B sink slowly holding a normal breath of air and with an empty BCD.
C float at eye level while holding a normal breath of air and with an empty BCD.
D sink easily with a partially filled BCD.
C
19) Choose the best answer for the signal shown from the choices provided.
A+ TEST BANK 4
PADI OPEN WATER DIVER FINAL EXAM
NEWEST 2025/2026 COMPLETE ALL 300
QUESTIONS AND CORRECT DETAILED
ANSWERS |ALREADY GRADED
A+||ALREADY GRADED A+
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.
D
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?
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.
B
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
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.
A
A+ TEST BANK 1
, PADI OPEN WATER DIVER FINAL EXAM
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.
D anxiety.
C
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.
C
6) The best place for me to position an alternate 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 shoulder blades and waist.
B
7) Lung overexpansion injuries can be caused by
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.
D
8) If my cylinder of air lasts 60 minutes while I am at the surface breathing normally, assuming 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
B
9) How often should I take my scuba cylinder to be visually inspected by my dive center?
A+ TEST BANK 2
, PADI OPEN WATER DIVER FINAL EXAM
A Once a year.
B Once every two years.
C Every six months.
D Every five years.
A
10) The difference between DIN valves and 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 pressure.
C have an o-ring in them.
D have threaded openings to screw the regulator into.
D
11) Which of the following is part of proper care for my scuba cylinder?
A Sand and repaint it every year.
B Dry it in the sun.
C Keep some air in it.
D Have it pressure tested every month.
C
12) Refer to the regulator picture. Each regulator part has a number next to it. Please choose the
correct number for the choices below.
regulator first stage,
regulator second stage
alternate air source second stage
low pressure inflator hose for the BCD
instrument console/gauges/computer
1. regulator first stage, 2. regulator second stage, 3. alternate air source second stage, 4. instrument
console/gauges/computer, 5. low pressure inflator hose for the BCD
13) When I look at things underwater they often seem ___________ than they look on the surface.
A larger and/or nearer
B larger and/or further away
C smaller and/or further away
D smaller and/or nearer
A
14) ___________ travels faster in water than it does in air. This is why you cannot easily tell where it
comes from.
A+ TEST BANK 3
, PADI OPEN WATER DIVER FINAL EXAM
A Light
B Current
C Aquatic life
D Sound
D
15) Unless there are laws that say differently, I should stay within ___________ of my dive flag. Boats
should stay at least 100 ft away.
A 200 ft.
B 100 ft.
C 50 ft.
D 17 ft.
C
16) If I work too hard and find it difficult to breathe underwater, I should
A inflate my BCD.
B stop all activity and rest, holding onto something for support if possible.
C swim immediately to my buddy and signal for help.
D do a controlled emergency swimming ascent (CESA - swimming up to the surface saying the ah-h-h-
h sound).
B
17) As I descend (go down), my wet suit will
A compress (feel thinner) from water pressure, and I will lose buoyancy and warmth.
B expand (feel thicker) from water pressure, and I will gain buoyancy and warmth.
C remain the same thickness from the water pressure, and there will be no change in warmth.
D expand (feel thicker) from water pressure, and I will lose buoyancy and warmth.
A
18) I know I am properly weighted for diving if I
A float at neck level with my BCD about half full while I am holding a normal breath of air.
B sink slowly holding a normal breath of air and with an empty BCD.
C float at eye level while holding a normal breath of air and with an empty BCD.
D sink easily with a partially filled BCD.
C
19) Choose the best answer for the signal shown from the choices provided.
A+ TEST BANK 4
