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KNOWLEDGE REVIEW - OPEN WATER DIVER
Question 1
If your ears or sinuses hurt while you are descending (going down), it usually means:
A. Your air spaces are equalized (cleared).
B. Your mask strap is too tight.
C. You are feeling a squeeze and need to eualize.
D. Your mask is too small.
Question 2
You should not dive if you have a cold or allergies because:
A. You may become unconscious (dazed, out cold) without warning.
B. You may become tired or seasick easily.
C. You may not be able to equalize pressure in your body air spaces.
D. You will use your air up too quickly.
Question 3
Holding your breath while scuba diving can:
A. Cause lung injuries.
B. Push air into the blood stream and chest area.
C. Lead to life threatening injuries.
D. All of the above.
Question 4
What is the most important thing to remember (Rule #1) in Scuba Diving?
A. Never dive alone.
B. Always perform a pre-dive safety check.
C. Establish positive buoyancy and relax when at the surface.
D. Breathe continuously and never hold your breathe.
Question 5
If you work too hard and find it difficult to breathe underwater, you should:
A. inflate you BCD (Buoyancy Control Device)
B. Stop all activity and rest, hold onto something for support if possible.
C. Immediately swim to your buddy and signal for help.
D. Do a CESA (Controlled Emergency Swimming Ascent) while saying the "ah-h-h-h-h" or "e-e-e-e-e" sound.
Question 6
You know you are properly weighted for diving if you:
A. Float at neck level with your BCD about half-full and your are holding a normal breathe of air.
B. Sink slowly holding a normal breathe of air and an empty BCD
C. Float at eye-level holding a normal breath of air with an empty BCD.
D. Sink easily with a partially filled BCD.
Question 7
If you and your dive buddy were separated underwater, what should you generally do?
A. Go up right away, wait for a minute and then go back down underwater.
B. Search for a minute underwater and then go up to find your buddy.
C. Go to the surface immediately and get out of the water.
D. Find your buddy's bubbles, and then follow the bubbles to find your buddy.
Question 8
Imagine you feel an unexpected mild current at the start of your dive; How should you begin this dive?
A. Dive with the current.
B. Dive across the current.
C. Dive against or into the current.
D. Dive at an angle to the current.
Question 9
Imagine you were boat diving and you were caught in a strong current at the surface; What should you do?
A. Make yourself float, signal for help, rest and wait for the boat to pick you up.
B. Descent (go down) and try to swim against the current near the bottom.
C. Make yourself float, signal for help, and try to swim against the current.
D. Try to swim against the current by staying just below the surface.
Question 10
Most injuries caused by aquatic animals happen because:
A. The animal is acting aggressively (like a predator)
B. The animal cannot see that you are a diver.
C. The animal thinks that you are food.
D. The animal is trying to protect itself.
Question 11
If you are in an out-of-air situation, and you are close to your buddy, the best thing to do is:
A. Switch to your buddy's alternate air source.
B. Make a CESA (Controlled Emergency Swimming Ascent) while saying the "ah-h-h-h-h" or "e-e-e-e-e" sound.
C. Buddy Breathe (share a single regulator - taking turns breathing with your buddy)
D. None of the above.
Question 12
Divers who act foolishly at depth may start acting normal again if they:
A. Ascent (go up) to a shallower depth.
B. Breathe slowly and deeply.
C. Signal their dive buddy for help.
D. All of the above.
Question 13
You are likely to increase the risk of DCS (Decompression Sickness; when absorbed nitrogen bubbles block blood circulation and/or flow in your body after a dive) if:
A. You dive in poor visibility, strong moving water, and rough seas.
B. You are tired, cold, sick, thirsty or overweight.
C. You do not look after your equipment.
D. All of the above.
Question 14
To reduce the risk of DCS you should:
A. Make at least a 3-minute safety stop at 5 metres / 15-feet at the end of each dive
B. Ascend (go up) to a shallower depth if you feel dizzy.
C. Have your tank filled only at a dive center you trust.
D. All of the above.
Question 15
You make two dives in one day, and you are flying home on a commercial plane. What is the minimum time you have to wait before you can go on the plane?
A. You do not have to wait.
B. 48 hours
C. 24 hours
D. 18 hours
Questionnaire Statement

I AGREE TO DISCUSS ANY MISSED ITEMS WITH MY CERTIFIED DIVE INSTRUCTOR SO THAT I CAN UNDERSTAND THE PRINCIPLES BEHIND ANY QUESTION I MAY HAVE MISSED SO-AS TO BE A SAFE AND COMPETENT DIVER.

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