PADI OPEN WATER Final Exam A
1.If an object is neutrally buoyant (does not sink or float) in fresh water;
the same object placed into salt water would
Answer sink.
2.Imagine you 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 (molecules move closer together).
3.Imagine you turn a glass upside down, trap the air in it by putting it in
water, and then you take the glass down to 33 feet. What would happen to
the air space in the glass
Answer The air space would become half the size it was at the surface.
4.If you are not able to equalize (clear) your body air spaces, it may be
because you have
Answer a cold, allergy or another breathing medical problem.
5.If you ears or sinuses hurt while you are descending (going down), it
usually means
Answer you are feeling a squeeze and need to equalize.
6.Imagine if you held a glass upside down at 33 feet and filled it with air
from your tank. What would happen to the air in the glass as you ascend
(go up)
Answer The expanding air would bubble out of the bottom of the glass.
7.Holding your breath while scuba diving can
Answer Cause lung injuries, push air into the blood stream and chest
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, area, and lead to life threatening injuries.
8.If your tank of air lasts 60 minutes while you are at the surface
breathing normally, how long will it last at 66 feet breathing normally
Answer 20 minutes
9.How often should you take your suva tank to be visually inspected by
your dive center
Answer Once a year
10.How can you identify a DIN tank valve from a yoke valve
Answer The DIN valve has a threaded opening to screw the regulator
into.
11.What can you do to properly care for a scuba tank
Answer Do not use all the air in the tank.
12.Underwater things look . When you look at things underwater
they often seem than when you look at them on the surface.
Answer bigger, nearer
13. travels faster in water. This is why you cannot use it to tell
direction very well.
Answer Sound
14.How should you move under water
Answer Slowly and steadily
15.If you work too hard and find it difficult to breathe underwater, you should
Answer stop all activity and rest, hold onto something for support, i
possible.
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8
1.If an object is neutrally buoyant (does not sink or float) in fresh water;
the same object placed into salt water would
Answer sink.
2.Imagine you 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 (molecules move closer together).
3.Imagine you turn a glass upside down, trap the air in it by putting it in
water, and then you take the glass down to 33 feet. What would happen to
the air space in the glass
Answer The air space would become half the size it was at the surface.
4.If you are not able to equalize (clear) your body air spaces, it may be
because you have
Answer a cold, allergy or another breathing medical problem.
5.If you ears or sinuses hurt while you are descending (going down), it
usually means
Answer you are feeling a squeeze and need to equalize.
6.Imagine if you held a glass upside down at 33 feet and filled it with air
from your tank. What would happen to the air in the glass as you ascend
(go up)
Answer The expanding air would bubble out of the bottom of the glass.
7.Holding your breath while scuba diving can
Answer Cause lung injuries, push air into the blood stream and chest
1/
8
, area, and lead to life threatening injuries.
8.If your tank of air lasts 60 minutes while you are at the surface
breathing normally, how long will it last at 66 feet breathing normally
Answer 20 minutes
9.How often should you take your suva tank to be visually inspected by
your dive center
Answer Once a year
10.How can you identify a DIN tank valve from a yoke valve
Answer The DIN valve has a threaded opening to screw the regulator
into.
11.What can you do to properly care for a scuba tank
Answer Do not use all the air in the tank.
12.Underwater things look . When you look at things underwater
they often seem than when you look at them on the surface.
Answer bigger, nearer
13. travels faster in water. This is why you cannot use it to tell
direction very well.
Answer Sound
14.How should you move under water
Answer Slowly and steadily
15.If you work too hard and find it difficult to breathe underwater, you should
Answer stop all activity and rest, hold onto something for support, i
possible.
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8
