PADI Open Water Diver Final Assessment Test
Questions & Correct Answers (Expert Verified)
Update 2025, Graded A+
If an object is neutrally buoyant in fresh water, the same object placed into salt water would... -
ANSWER Float
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? - ANSWER The balloon will get smaller and the air inside the
balloon will be more dense
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 m/33 ft. The air space would... - ANSWER Become half the size it was at the surface
If I am not able to equalize my body air spaces, it may be because I have... - ANSWER A cold,
allergy or another medical problem
If my ears or sinuses hurt while I am descending, it usually means... - ANSWER I am feeling a
squeeze and need to equalize
The best place for me to position an alternate air source is... - ANSWER In the triangle area
formed by my chin and the lower corners of my rib cage
Lung overexpansion injuries can be caused by... - ANSWER Holding my breath while scuba diving
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 m/66 ft breathing normally? - ANSWER 20 minutes
, How often should I take my scuba cylinder to be visually inspected by my dive center? -
ANSWER Once a year
The difference between DIN values and yoke valves is that DIN valves... - ANSWER Have
threaded openings to screw the regulator into
Which of the following is not part of proper care for my scuba cylinder? - ANSWER Keep some
air in it
Refer to the regulator picture on the right. Each regulator part has a number next to it. Please
choose the correct numeric order from the choices below - ANSWER 1. Regulator first stage, 2.
regulator second stage, 3. alternate air source second stage, 4. low pressure inflator hose for
the BCD, 5. instrument console/gauges/computer
When I look at things underwater they often seem _____ than they look on the surface -
ANSWER Larger and/or nearer
_____ travels faster in water than it does in air. This is why you cannot easily tell where it comes
from - ANSWER Sound
Unless there are laws that say differently, I should stay within _____ of my dive flag - ANSWER
15 m/50 ft
If I work too hard and find it difficult to breathe underwater, I should... - ANSWER Stop all
activity and rest, holding onto something for support if possible
As I descend, my wet suit will... - ANSWER Compress from water pressure, and I will lose
buoyancy and warmth
Questions & Correct Answers (Expert Verified)
Update 2025, Graded A+
If an object is neutrally buoyant in fresh water, the same object placed into salt water would... -
ANSWER Float
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? - ANSWER The balloon will get smaller and the air inside the
balloon will be more dense
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 m/33 ft. The air space would... - ANSWER Become half the size it was at the surface
If I am not able to equalize my body air spaces, it may be because I have... - ANSWER A cold,
allergy or another medical problem
If my ears or sinuses hurt while I am descending, it usually means... - ANSWER I am feeling a
squeeze and need to equalize
The best place for me to position an alternate air source is... - ANSWER In the triangle area
formed by my chin and the lower corners of my rib cage
Lung overexpansion injuries can be caused by... - ANSWER Holding my breath while scuba diving
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 m/66 ft breathing normally? - ANSWER 20 minutes
, How often should I take my scuba cylinder to be visually inspected by my dive center? -
ANSWER Once a year
The difference between DIN values and yoke valves is that DIN valves... - ANSWER Have
threaded openings to screw the regulator into
Which of the following is not part of proper care for my scuba cylinder? - ANSWER Keep some
air in it
Refer to the regulator picture on the right. Each regulator part has a number next to it. Please
choose the correct numeric order from the choices below - ANSWER 1. Regulator first stage, 2.
regulator second stage, 3. alternate air source second stage, 4. low pressure inflator hose for
the BCD, 5. instrument console/gauges/computer
When I look at things underwater they often seem _____ than they look on the surface -
ANSWER Larger and/or nearer
_____ travels faster in water than it does in air. This is why you cannot easily tell where it comes
from - ANSWER Sound
Unless there are laws that say differently, I should stay within _____ of my dive flag - ANSWER
15 m/50 ft
If I work too hard and find it difficult to breathe underwater, I should... - ANSWER Stop all
activity and rest, holding onto something for support if possible
As I descend, my wet suit will... - ANSWER Compress from water pressure, and I will lose
buoyancy and warmth
