PADI OPEN WATER DIVER CORE MAIN
EXAMINATION SET QUESTIONS AND ANSWERS
SURE A+
✔✔working pressure - ✔✔the maximum allowed fill pressure
✔✔quick release - ✔✔the most important feature of a weight system
✔✔trim - ✔✔helps you maintain the optimum body position in the water, save energy,
reduce accidental damage to fragile organisms and enjoy diving more
✔✔larger, closer (magnifies about 1/3) - ✔✔light reflation underwater causes objects to
be
✔✔red - ✔✔the first color to be absorbed
✔✔faster - ✔✔sound travels 4 times _______ in water than in air
✔✔streamlining - ✔✔reduces drag
✔✔20x faster - ✔✔water absorbs more heat than air
, ✔✔wet suits - ✔✔provide insulation and protection;
your body quickly heats the trapped water, and the neoprene greatly slows heat loss
✔✔airway control - ✔✔the kill of breathing past this remaining water without drawing
any into your throat
✔✔overexertion - ✔✔fatigue, labored breathing, a feeling of suffocation or air starvation,
weakness, anxiety, headache, muscle cramping, a tendency to panic
✔✔stop all activity - ✔✔what should you do if you experience overexertion?
✔✔mine - ✔✔whose responsibility is it to stay with your buddy and follow the rules,
guidelines and recommendations for each other's divers safety
✔✔swim down breathing through snorkel - ✔✔how should you swim when swimming on
the surface?
✔✔safety stop - ✔✔a pause in your ascent between 6 meters/20 feet and 3 meters/10
feet for 3 to 5 minutes
✔✔release dissolved gases - ✔✔what does a safety stop give you extra time to do?
✔✔dry suits - ✔✔provide the most insulation;
have watertight zippers and seals, and most types cover your entire body;
better for cooler water dives
✔✔skin suits (body suits) - ✔✔provide little or no insulation;
mainly to protect you from minor cuts, scrapes, stings, and sunburn
✔✔dive knife, dive tool, shears, z-knives - ✔✔4 types of cursing tools
✔✔water movement, weather, plankton, and bottom composure - ✔✔four factors that
affect visibility
✔✔dive within limits - ✔✔you do not exceed the limits of your training and/or experience
✔✔passive interactions - ✔✔those that leave aquatic life undisturbed
✔✔active interactions - ✔✔those that affect aquatic life directly, by altering their normal
behaviors: feeding, hunting, touching, moving, chasing, scaring, etc.
✔✔project AWARE - ✔✔movement of scuba divers protecting our ocean planet
✔✔surf zone - ✔✔the area in which waves break
EXAMINATION SET QUESTIONS AND ANSWERS
SURE A+
✔✔working pressure - ✔✔the maximum allowed fill pressure
✔✔quick release - ✔✔the most important feature of a weight system
✔✔trim - ✔✔helps you maintain the optimum body position in the water, save energy,
reduce accidental damage to fragile organisms and enjoy diving more
✔✔larger, closer (magnifies about 1/3) - ✔✔light reflation underwater causes objects to
be
✔✔red - ✔✔the first color to be absorbed
✔✔faster - ✔✔sound travels 4 times _______ in water than in air
✔✔streamlining - ✔✔reduces drag
✔✔20x faster - ✔✔water absorbs more heat than air
, ✔✔wet suits - ✔✔provide insulation and protection;
your body quickly heats the trapped water, and the neoprene greatly slows heat loss
✔✔airway control - ✔✔the kill of breathing past this remaining water without drawing
any into your throat
✔✔overexertion - ✔✔fatigue, labored breathing, a feeling of suffocation or air starvation,
weakness, anxiety, headache, muscle cramping, a tendency to panic
✔✔stop all activity - ✔✔what should you do if you experience overexertion?
✔✔mine - ✔✔whose responsibility is it to stay with your buddy and follow the rules,
guidelines and recommendations for each other's divers safety
✔✔swim down breathing through snorkel - ✔✔how should you swim when swimming on
the surface?
✔✔safety stop - ✔✔a pause in your ascent between 6 meters/20 feet and 3 meters/10
feet for 3 to 5 minutes
✔✔release dissolved gases - ✔✔what does a safety stop give you extra time to do?
✔✔dry suits - ✔✔provide the most insulation;
have watertight zippers and seals, and most types cover your entire body;
better for cooler water dives
✔✔skin suits (body suits) - ✔✔provide little or no insulation;
mainly to protect you from minor cuts, scrapes, stings, and sunburn
✔✔dive knife, dive tool, shears, z-knives - ✔✔4 types of cursing tools
✔✔water movement, weather, plankton, and bottom composure - ✔✔four factors that
affect visibility
✔✔dive within limits - ✔✔you do not exceed the limits of your training and/or experience
✔✔passive interactions - ✔✔those that leave aquatic life undisturbed
✔✔active interactions - ✔✔those that affect aquatic life directly, by altering their normal
behaviors: feeding, hunting, touching, moving, chasing, scaring, etc.
✔✔project AWARE - ✔✔movement of scuba divers protecting our ocean planet
✔✔surf zone - ✔✔the area in which waves break
