PADI OPEN WATER DIVER CERTIFICATION EXAM
What is the most important feature in my weight system? -
<<<Answers>>>A quick release that will enable you to float
with an uninflated BC
In order of priority, what are my four options if I run out of air
underwater? -<<<Answers>>>1. Take lighter breaths and
don't attempt a safety stop as you ascend
2. Use an alternate air source from your buddy
3. Make a controlled emergency swimming ascent (CESA)
4. Make a buoyant emergency ascent
How do I make a controlled emergency swimming ascent
(CESA)? -<<<Answers>>>When you have no air and are
approximately 6-9 m/20-30 ft from the surface, look up and
swim to the surface making a continuous ahhhhh sound into
your regulator
How do I make a buoyant emergency ascent? -
<<<Answers>>>When you have no air and are very deep,
ditch your weights, look up and swim to the surface making a
continuous ahhhhh sound into your regulator
How should I assist an unresponsive diver underwater and
what is the priority? -<<<Answers>>>You want to get the
diver to the surface. Hold the diver's regulator in their mouth
and try to ascend at a safe rate
,At a minimum, how many surface signaling devices should I
have with me on a dive? -<<<Answers>>>At least 2 - one
audible and one visual
How close am I supposed to stay to a dive flag? -
<<<Answers>>>Within 15 m/50 ft
How far away are boaters supposed to stay from a dive flag? -
<<<Answers>>>At least 30-60 m/100-200 ft
For what 4 purposes might I carry a slate or wet book? -
<<<Answers>>>Communication, to note dive plan limits, to
record information during the dive, and for the unexpected
What information do I typically record, at a minimum,
regardless of what I choose? -<<<Answers>>>Date, dive site
name/location, dive buddy, dive depth and duration, objective
and description
What can I do with dive planning software? -
<<<Answers>>>Estimate how long your air supply will last
and estimate the time your dive computer will allow on a dive
What is the composition of air to divers? -
<<<Answers>>>79% nitrogen and 21% oxygen
, To what 4 diving related issues does the makeup of air relate?
-<<<Answers>>>Oxygen toxicity, contaminated air,
decompression sickness, and gas narcosis
How do I prevent oxygen toxicity? -<<<Answers>>>The
higher the oxygen content, the shallower the depth limit for
using it while diving. Don't exceed 40 m/130 ft when diving
recreationally
What are 5 possible signs/symptoms of contaminated air? -
<<<Answers>>>Headache, nausea, cherry-red lips and
fingernail beds, dizziness, and
unconsciousness/unresponsiveness
What are the 2 primary factors that influence how much
nitrogen dissolves into my body tissues during a dive? -
<<<Answers>>>Depth and time
What is decompression sickness (DCS), or "the bends"? -
<<<Answers>>>When excess nitrogen in your body tissues is
too high when you surface, so nitrogen comes out of solution
faster than your body can eliminate it. Nitrogen bubbles will
form within your blood and body tissues.
What are 9 signs/symptoms of decompression sickness? -
<<<Answers>>>Paralysis, dizziness, tingling, joint and limb
What is the most important feature in my weight system? -
<<<Answers>>>A quick release that will enable you to float
with an uninflated BC
In order of priority, what are my four options if I run out of air
underwater? -<<<Answers>>>1. Take lighter breaths and
don't attempt a safety stop as you ascend
2. Use an alternate air source from your buddy
3. Make a controlled emergency swimming ascent (CESA)
4. Make a buoyant emergency ascent
How do I make a controlled emergency swimming ascent
(CESA)? -<<<Answers>>>When you have no air and are
approximately 6-9 m/20-30 ft from the surface, look up and
swim to the surface making a continuous ahhhhh sound into
your regulator
How do I make a buoyant emergency ascent? -
<<<Answers>>>When you have no air and are very deep,
ditch your weights, look up and swim to the surface making a
continuous ahhhhh sound into your regulator
How should I assist an unresponsive diver underwater and
what is the priority? -<<<Answers>>>You want to get the
diver to the surface. Hold the diver's regulator in their mouth
and try to ascend at a safe rate
,At a minimum, how many surface signaling devices should I
have with me on a dive? -<<<Answers>>>At least 2 - one
audible and one visual
How close am I supposed to stay to a dive flag? -
<<<Answers>>>Within 15 m/50 ft
How far away are boaters supposed to stay from a dive flag? -
<<<Answers>>>At least 30-60 m/100-200 ft
For what 4 purposes might I carry a slate or wet book? -
<<<Answers>>>Communication, to note dive plan limits, to
record information during the dive, and for the unexpected
What information do I typically record, at a minimum,
regardless of what I choose? -<<<Answers>>>Date, dive site
name/location, dive buddy, dive depth and duration, objective
and description
What can I do with dive planning software? -
<<<Answers>>>Estimate how long your air supply will last
and estimate the time your dive computer will allow on a dive
What is the composition of air to divers? -
<<<Answers>>>79% nitrogen and 21% oxygen
, To what 4 diving related issues does the makeup of air relate?
-<<<Answers>>>Oxygen toxicity, contaminated air,
decompression sickness, and gas narcosis
How do I prevent oxygen toxicity? -<<<Answers>>>The
higher the oxygen content, the shallower the depth limit for
using it while diving. Don't exceed 40 m/130 ft when diving
recreationally
What are 5 possible signs/symptoms of contaminated air? -
<<<Answers>>>Headache, nausea, cherry-red lips and
fingernail beds, dizziness, and
unconsciousness/unresponsiveness
What are the 2 primary factors that influence how much
nitrogen dissolves into my body tissues during a dive? -
<<<Answers>>>Depth and time
What is decompression sickness (DCS), or "the bends"? -
<<<Answers>>>When excess nitrogen in your body tissues is
too high when you surface, so nitrogen comes out of solution
faster than your body can eliminate it. Nitrogen bubbles will
form within your blood and body tissues.
What are 9 signs/symptoms of decompression sickness? -
<<<Answers>>>Paralysis, dizziness, tingling, joint and limb
