PADI OPEN WATER DIVER STUDY EXAM GUIDE QUESTIONS
AND ANSWERS FIRM A+
✔✔to efficiently swim through water - ✔✔why are fins important to have?
✔✔adjustable strap fins - ✔✔open at the heel and straps hold them in place
✔✔full foot fins - ✔✔enclose the heel and fit like snug shoes or slippers
✔✔BCD (buoyancy control device) - ✔✔holds the kit together and allows you to adjust
buoyancy throughout the dive
✔✔regulator - ✔✔delivers breathing air at the surrounding pressure when you inhale
and directs exhaled air into the water
✔✔weight system - ✔✔holds lead weigh to counteract the positive buoyancy of your
body and some of your equipment, with a mechanism for dropping some or all in an
emergency
✔✔BCD, regulator, cylinder, weight system - ✔✔the four equipment systems coming to
make a scuba kit
✔✔inflatable bladder, cylinder band and harness jacket, LPI, overpressure valves,
weight system - ✔✔the five components that make up a BCD
✔✔first stage - ✔✔supplies air to all the other components; connects to cylinder
✔✔second stage - ✔✔breathe from this part; delivers air only when you inhale, using
one way valves
✔✔alternate air source - ✔✔an extra second stage you use for sharing air with a buddy
should the need arise
✔✔alternate inflator regulator - ✔✔combines a second stage with your BCD low-
pressure inflator
✔✔pony bottles - ✔✔small cylinders with their own regulators
✔✔yoke system - ✔✔holds the first stage to the cylinder with a clamp system
✔✔cylinder - ✔✔an aluminum or steel alloy container made specifically for storing high
pressure air
✔✔cylinder valve - ✔✔controls air flow to and from the cylinder
, ✔✔cylinder alloy - ✔✔typically a code number
✔✔serial number - ✔✔record in case your cylinder is lost or stolen
✔✔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?
AND ANSWERS FIRM A+
✔✔to efficiently swim through water - ✔✔why are fins important to have?
✔✔adjustable strap fins - ✔✔open at the heel and straps hold them in place
✔✔full foot fins - ✔✔enclose the heel and fit like snug shoes or slippers
✔✔BCD (buoyancy control device) - ✔✔holds the kit together and allows you to adjust
buoyancy throughout the dive
✔✔regulator - ✔✔delivers breathing air at the surrounding pressure when you inhale
and directs exhaled air into the water
✔✔weight system - ✔✔holds lead weigh to counteract the positive buoyancy of your
body and some of your equipment, with a mechanism for dropping some or all in an
emergency
✔✔BCD, regulator, cylinder, weight system - ✔✔the four equipment systems coming to
make a scuba kit
✔✔inflatable bladder, cylinder band and harness jacket, LPI, overpressure valves,
weight system - ✔✔the five components that make up a BCD
✔✔first stage - ✔✔supplies air to all the other components; connects to cylinder
✔✔second stage - ✔✔breathe from this part; delivers air only when you inhale, using
one way valves
✔✔alternate air source - ✔✔an extra second stage you use for sharing air with a buddy
should the need arise
✔✔alternate inflator regulator - ✔✔combines a second stage with your BCD low-
pressure inflator
✔✔pony bottles - ✔✔small cylinders with their own regulators
✔✔yoke system - ✔✔holds the first stage to the cylinder with a clamp system
✔✔cylinder - ✔✔an aluminum or steel alloy container made specifically for storing high
pressure air
✔✔cylinder valve - ✔✔controls air flow to and from the cylinder
, ✔✔cylinder alloy - ✔✔typically a code number
✔✔serial number - ✔✔record in case your cylinder is lost or stolen
✔✔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?
