PADI Open Water Diver Final Assessment – Comprehensive Study Guide, Key Concepts &
Practice Questions Review
Float - correct answer ✔✔If an object is neutrally buoyant in fresh water, the same object
placed into salt water would...
The balloon will get smaller and the air inside the balloon will be more dense - correct answer
✔✔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?
Become half the size it was at the surface - correct answer ✔✔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...
A cold, allergy or another medical problem - correct answer ✔✔If I am not able to equalize my
body air spaces, it may be because I have...
I am feeling a squeeze and need to equalize - correct answer ✔✔If my ears or sinuses hurt while
I am descending, it usually means...
In the triangle area formed by my chin and the lower corners of my rib cage - correct answer
✔✔The best place for me to position an alternate air source is...
Holding my breath while scuba diving - correct answer ✔✔Lung overexpansion injuries can be
caused by...
20 minutes - correct answer ✔✔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?
, Once a year - correct answer ✔✔How often should I take my scuba cylinder to be visually
inspected by my dive center?
Have threaded openings to screw the regulator into - correct answer ✔✔The difference
between DIN values and yoke valves is that DIN valves...
Keep some air in it - correct answer ✔✔Which of the following is not part of proper care for my
scuba cylinder?
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 - correct answer
✔✔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
Larger and/or nearer - correct answer ✔✔When I look at things underwater they often seem
_____ than they look on the surface
Sound - correct answer ✔✔_____ travels faster in water than it does in air. This is why you
cannot easily tell where it comes from
15 m/50 ft - correct answer ✔✔Unless there are laws that say differently, I should stay within
_____ of my dive flag
Stop all activity and rest, holding onto something for support if possible - correct answer ✔✔If I
work too hard and find it difficult to breathe underwater, I should...
Compress from water pressure, and I will lose buoyancy and warmth - correct answer ✔✔As I
descend, my wet suit will...
Practice Questions Review
Float - correct answer ✔✔If an object is neutrally buoyant in fresh water, the same object
placed into salt water would...
The balloon will get smaller and the air inside the balloon will be more dense - correct answer
✔✔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?
Become half the size it was at the surface - correct answer ✔✔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...
A cold, allergy or another medical problem - correct answer ✔✔If I am not able to equalize my
body air spaces, it may be because I have...
I am feeling a squeeze and need to equalize - correct answer ✔✔If my ears or sinuses hurt while
I am descending, it usually means...
In the triangle area formed by my chin and the lower corners of my rib cage - correct answer
✔✔The best place for me to position an alternate air source is...
Holding my breath while scuba diving - correct answer ✔✔Lung overexpansion injuries can be
caused by...
20 minutes - correct answer ✔✔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?
, Once a year - correct answer ✔✔How often should I take my scuba cylinder to be visually
inspected by my dive center?
Have threaded openings to screw the regulator into - correct answer ✔✔The difference
between DIN values and yoke valves is that DIN valves...
Keep some air in it - correct answer ✔✔Which of the following is not part of proper care for my
scuba cylinder?
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 - correct answer
✔✔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
Larger and/or nearer - correct answer ✔✔When I look at things underwater they often seem
_____ than they look on the surface
Sound - correct answer ✔✔_____ travels faster in water than it does in air. This is why you
cannot easily tell where it comes from
15 m/50 ft - correct answer ✔✔Unless there are laws that say differently, I should stay within
_____ of my dive flag
Stop all activity and rest, holding onto something for support if possible - correct answer ✔✔If I
work too hard and find it difficult to breathe underwater, I should...
Compress from water pressure, and I will lose buoyancy and warmth - correct answer ✔✔As I
descend, my wet suit will...
