PADI OPEN WATER UPDATED FINAL PAPER TEST
QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔Why does a diver need a BCD? - ✔✔allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
✔✔Why do divers need a back pack? - ✔✔to hold the cylinder
✔✔Of the 3 styles of BCD, which is the most commonly used by recreational divers? -
✔✔jacket style
✔✔What 5 features do BCDs have in common? - ✔✔1) enough air
2) large diameter inflation/deflation hose
3) low pressure inflation system
4) over pressure relief valve
5) adjustable to fit comfortably
✔✔How do you prepare a BCD for use? - ✔✔adjustment for proper fit is required
With it deflated, adjust the straps
Put it on, have someone help fine tune it
Inflate it
✔✔What additional maintenance requirements do you have with a BCD? - ✔✔rinse
interior with fresh water
store partially inflated
✔✔Why does a diver need a scuba cylinder? - ✔✔used to safely store high pressure air
✔✔What does a cylinder valve do? - ✔✔control air flow from the cylinder
✔✔With what piece of equipment is the backpack integrated? - ✔✔cylinder
✔✔What are 4 common sizes and 2 materials for scuba cylinders? - ✔✔8, 10, 12, 15
liters
aluminum and steel
✔✔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
QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔Why does a diver need a BCD? - ✔✔allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
✔✔Why do divers need a back pack? - ✔✔to hold the cylinder
✔✔Of the 3 styles of BCD, which is the most commonly used by recreational divers? -
✔✔jacket style
✔✔What 5 features do BCDs have in common? - ✔✔1) enough air
2) large diameter inflation/deflation hose
3) low pressure inflation system
4) over pressure relief valve
5) adjustable to fit comfortably
✔✔How do you prepare a BCD for use? - ✔✔adjustment for proper fit is required
With it deflated, adjust the straps
Put it on, have someone help fine tune it
Inflate it
✔✔What additional maintenance requirements do you have with a BCD? - ✔✔rinse
interior with fresh water
store partially inflated
✔✔Why does a diver need a scuba cylinder? - ✔✔used to safely store high pressure air
✔✔What does a cylinder valve do? - ✔✔control air flow from the cylinder
✔✔With what piece of equipment is the backpack integrated? - ✔✔cylinder
✔✔What are 4 common sizes and 2 materials for scuba cylinders? - ✔✔8, 10, 12, 15
liters
aluminum and steel
✔✔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
