PADI OPEN WATER DIVER LATEST EXAMS ACTUAL
QUESTIONS AND ANSWERS FIRM A+
✔✔What 5 common markings do you commonly find on the neck of a scuba cylinder? -
✔✔1) type of material cylinder is made of
2) max pressure permitted in cylinder
3) serial number
4) dates of pressure tests
5) manufacturer symbol
✔✔What are 2 basic types of cylinder valves? - ✔✔K-valve: simple on and off
J-valve: built in mechanism that signals when you run low on air
✔✔What's the difference between a DIN valve and a Yoke valve? - ✔✔DIN: screw the
regulator into the valve
Yoke: most common, attach regulator via Yoke
✔✔What is the purpose of a burst disc? - ✔✔relieve the cylinder over pressurization
which can happen from overfilling the cylinder or excess heat
✔✔How do you turn a cylinder valve on and off? - ✔✔Open slowly until it stops turning
Close it all the way gently
✔✔What's the best way to keep water out of a scuba cylinder? - ✔✔never allow it to be
completely empty
✔✔Why do you need scuba cylinder visual inspections and pressure tests? -
✔✔overfilling can lead to metal fatigue and shorten the life of the cylinder
to avoid corrosion
✔✔What does a regulator do? - ✔✔- makes it possible to use the air to your cylinder
- reduces scuba cylinder's high pressure air to match the surrounding water pressure
✔✔When looking at a regulator, which are the following parts:
first stage - ✔✔first stage: attach to scuba cylinder valve
second stage: has a mouthpiece
✔✔What's the most important feature for consideration when purchasing a regulator? -
✔✔ease of breathing
✔✔How do you rinse a regulator after use? - ✔✔soak it, while attached to your scuba
cylinder
then rinse with running water
, ✔✔What 3 points do you need to keep in mind when rinsing your regulator? - ✔✔1)put
the first stage dust cover firmly in place to keep H2o out of first stage
2) Do not use high pressure water to rinse
3) Don't press the purge button while rinsing or soaking, bc it opens the second stage
inlet valve
✔✔What is a SPG? - ✔✔Submersible Pressure Gauge
✔✔Why do divers need a submersible pressure gauge? - ✔✔to monitor how much air
you have
✔✔Proper airway control means to: - ✔✔1) Always inhale
slowly if water enters your regulator, snorkel or mouth, so you don't pull it into your
throat; 2) always inhale cautiously and slowly after clearing your snorkel or reg- ulator;
and 3) use your tongue as a splash guard by putting the tip on the roof of your mouth
when you breath past small amounts of water.
✔✔How to breath? - ✔✔Always breathe
slowly and deeply and continu-
ously when using scuba. Strive to develop airway control.
✔✔Overexertion symptoms include - ✔✔symptoms include fatigue, labored breathing, a
feel- ing of suffocation, weakness, anxiety, headache, muscle cramping or a tendency
to panic.
✔✔three basic styles of exposure suits, - ✔✔the body suit, the wet suit and the dry suit.
✔✔All expo- sure suits have four basic maintenance steps: - ✔✔1) rinse, 2) dry inside
out, 3) store and 4) lubricate dry suit zip- pers periodically.
✔✔You can follow these points to avoid overheating: - ✔✔1. Set up all your equip- ment
before putting on the exposure suit. Put the suit on at the last possible moment.
2. Once you have the suit on, limit your activ- ity as much as possible.
3. Stay out of the sun as much as possible.
4. Keep your hood off, or at least pulled back off your head as long as possible.
5. Leave your jacket unzipped as long as possible.
6. Cool off by entering the water, or spraying down with a hose (common on dive boats)
as much as you need.
✔✔You can get two basic weight system types: - ✔✔the weight belt, and the integrated
weight system
✔✔The most important feature on any weight system. - ✔✔The quick release.
QUESTIONS AND ANSWERS FIRM A+
✔✔What 5 common markings do you commonly find on the neck of a scuba cylinder? -
✔✔1) type of material cylinder is made of
2) max pressure permitted in cylinder
3) serial number
4) dates of pressure tests
5) manufacturer symbol
✔✔What are 2 basic types of cylinder valves? - ✔✔K-valve: simple on and off
J-valve: built in mechanism that signals when you run low on air
✔✔What's the difference between a DIN valve and a Yoke valve? - ✔✔DIN: screw the
regulator into the valve
Yoke: most common, attach regulator via Yoke
✔✔What is the purpose of a burst disc? - ✔✔relieve the cylinder over pressurization
which can happen from overfilling the cylinder or excess heat
✔✔How do you turn a cylinder valve on and off? - ✔✔Open slowly until it stops turning
Close it all the way gently
✔✔What's the best way to keep water out of a scuba cylinder? - ✔✔never allow it to be
completely empty
✔✔Why do you need scuba cylinder visual inspections and pressure tests? -
✔✔overfilling can lead to metal fatigue and shorten the life of the cylinder
to avoid corrosion
✔✔What does a regulator do? - ✔✔- makes it possible to use the air to your cylinder
- reduces scuba cylinder's high pressure air to match the surrounding water pressure
✔✔When looking at a regulator, which are the following parts:
first stage - ✔✔first stage: attach to scuba cylinder valve
second stage: has a mouthpiece
✔✔What's the most important feature for consideration when purchasing a regulator? -
✔✔ease of breathing
✔✔How do you rinse a regulator after use? - ✔✔soak it, while attached to your scuba
cylinder
then rinse with running water
, ✔✔What 3 points do you need to keep in mind when rinsing your regulator? - ✔✔1)put
the first stage dust cover firmly in place to keep H2o out of first stage
2) Do not use high pressure water to rinse
3) Don't press the purge button while rinsing or soaking, bc it opens the second stage
inlet valve
✔✔What is a SPG? - ✔✔Submersible Pressure Gauge
✔✔Why do divers need a submersible pressure gauge? - ✔✔to monitor how much air
you have
✔✔Proper airway control means to: - ✔✔1) Always inhale
slowly if water enters your regulator, snorkel or mouth, so you don't pull it into your
throat; 2) always inhale cautiously and slowly after clearing your snorkel or reg- ulator;
and 3) use your tongue as a splash guard by putting the tip on the roof of your mouth
when you breath past small amounts of water.
✔✔How to breath? - ✔✔Always breathe
slowly and deeply and continu-
ously when using scuba. Strive to develop airway control.
✔✔Overexertion symptoms include - ✔✔symptoms include fatigue, labored breathing, a
feel- ing of suffocation, weakness, anxiety, headache, muscle cramping or a tendency
to panic.
✔✔three basic styles of exposure suits, - ✔✔the body suit, the wet suit and the dry suit.
✔✔All expo- sure suits have four basic maintenance steps: - ✔✔1) rinse, 2) dry inside
out, 3) store and 4) lubricate dry suit zip- pers periodically.
✔✔You can follow these points to avoid overheating: - ✔✔1. Set up all your equip- ment
before putting on the exposure suit. Put the suit on at the last possible moment.
2. Once you have the suit on, limit your activ- ity as much as possible.
3. Stay out of the sun as much as possible.
4. Keep your hood off, or at least pulled back off your head as long as possible.
5. Leave your jacket unzipped as long as possible.
6. Cool off by entering the water, or spraying down with a hose (common on dive boats)
as much as you need.
✔✔You can get two basic weight system types: - ✔✔the weight belt, and the integrated
weight system
✔✔The most important feature on any weight system. - ✔✔The quick release.
