Exam Questions and Answers
1.If an object is neutrally buoyant in fresh water, the same object placed
into salt water would...
Answer Float
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?
Answer The balloon will get smaller and the air inside the balloon will be
more dense
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 m/33 ft. The air space would...
Answer Become half the size it was at the surface
4.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
5.If my ears or sinuses hurt while I am descending, it usually means...
Answer I am feeling a squeeze and need to equalize
6.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
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, my rib cage
7.Lung overexpansion injuries can be caused by...
Answer Holding my breath while scuba diving
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 m/66 ft breathing normally?
Answer 20 minutes
9.How often should I take my scuba cylinder to be visually inspected by
my dive center?
Answer Once a year
10.The difference between DIN values and yoke valves is that DIN valves...
Answer -
Have threaded openings to screw the regulator into
11.Which of the following is not part of proper care for my scuba cylinder?
Answer -
Keep some air in it
12. 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
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