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PADI OPEN WATER DIVER FINAL EXAM UPDATED QUESTIONS AND ANSWERS
1) When 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 sinks or floats.
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. Identify 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 by putting it in
water, and then take it down to 10 meters. The air space
would
A became half the size it was at the surface.
B does not change in size.
C becomes 1/3 the size it was at the surface.
D becomes 2/3 the size it was at the surface.
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