PADI OPEN WATER DIVE R
CERTIFICATION EXAM
Question 1: If an object is neutrally buoyant in fresh
water, the same object placed into salt water would...
CORRECT ANSWER: Float
Question 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?
CORRECT ANSWER: The balloon will get smaller
and the air inside the balloon will be more dense
Question 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...
CORRECT ANSWER: Become half the size it was at
the surface
Question 4: If I am not able to equalize my body air
spaces, it may be because I have...
CORRECT ANSWER: A cold, allergy or another
medical problem
Question 5: If my ears or sinuses hurt while I am
descending, it usually means...
CORRECT ANSWER: I am feeling a squeeze and need
to equalize
Question 6: The best place for me to position an alternate
air source is...
CORRECT ANSWER: In the triangle area formed by
my chin and the lower corners of my rib cage
Question 7: Lung overexpansion injuries can be caused
by...
CORRECT ANSWER: Holding my breath while scuba
diving
Question 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?
CORRECT ANSWER: 20 minutes
Question 9: How often should I take my scuba cylinder to
be visually inspected by my dive center?
CORRECT ANSWER: Once a year
Question 10: The difference between DIN valves and
yoke valves is that DIN valves...
CORRECT ANSWER: Have threaded openings to
screw the regulator into
Question 11: Which of the following is not part of proper
care for my scuba cylinder?
CORRECT ANSWER: Keep some air in it
Question 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
CORRECT 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
Question 13: When I look at things underwater they often
seem _____ than they look on the surface
