PADI OPEN WATER MAIN EXAMS SCRIPT 2025/2026
QUESTIONS WITH ANSWERS TAGGED A+
✔✔Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the
way when not in use. T/F - ✔✔True
✔✔When my snorkel is in my mouth, the tip should be - ✔✔over the crown of my head.
✔✔Fins provide a large surface area so my legs can push against the water effectively.
T/F - ✔✔True
✔✔The two basic fin styles are ____________ fins - ✔✔adjustable and full-foot
✔✔My primary considerations when choosing fins are fit and - ✔✔blade size.
✔✔To prepare adjustable fins, I should adjust the straps wearing my wet suit boots. T/F
- ✔✔True
✔✔BCD (Buoyancy Control Device) - ✔✔Holds your 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.
✔✔Cylinder - ✔✔Holds the high-pressure breathing air supplied by your regulator
during the dive.
✔✔Weight system - ✔✔Holds lead weight to counteract the positive buoyancy of your
body and some of your equipment, with a mechanism for dropping some or all the
weight in an emergency.
✔✔There's no real benefit to choosing the components of my scuba kit as an integrated
package. T/F - ✔✔False
✔✔Inflatable bladder - ✔✔This is a very durable bag that you inflate or deflate to
change your buoyancy.
✔✔Cylinder band and harness/jacket - ✔✔The bladder integrates with an adjustable
harness that holds the cylinder on your back. The bladder may be entirely behind you,
or wrap partially around your waist and/or over your shoulders. With some systems, you
can interchange harnesses and bladders to accommodate sizing and preferences.
, ✔✔LPI (low pressure inflator) mechanism - ✔✔Usually at the end of a large-diameter
hose, the LPI inflates the bladder with air from your cylinder, via the regulator, when you
press a button. Another button allows you to deflate the bladder, or inflate it orally.
✔✔Overpressure/quick exhaust valves - ✔✔To prevent rupturing the bladder due to
overfilling, BCDs have one or more overpressure valves that automatically vent if the
BCD is too full. Some may have "quick dump" valves that let you manually release air,
which is sometimes easier (due to your position in the water) than using the LPI
exhaust.
✔✔The LPI mechanism inflates the BCD with air from my scuba cylinder. T/F - ✔✔True
✔✔My BCD should have adequate capacity to easily float my equipment and me at the
surface. T/F - ✔✔True
✔✔My BCD should fit - ✔✔fit snugly but not restrict breathing when fully inflated.
✔✔My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent
with recommended BCD care? - ✔✔Yes
✔✔Five components of your regulator - ✔✔The first stage is the "hub" of your regulator
and supplies air to the components.
Second stage
Alternate air source
Low-pressure inflator hose
The SPG/computer.
✔✔first stage is the "hub" of your regulator - ✔✔supplies air to all the other components.
It connects to the cylinder valve either by screwing into it, or with a yoke (clamp
system).
✔✔second stage - ✔✔It reduces the first stage intermediate pressure to the pressure
around you and delivers air only when you inhale - on demand. It has one-way valves
that vent your exhalation. The purge button lets you manually release air from your
cylinder. comes over your right shoulder
✔✔alternate air source (or "octopus") - ✔✔extra second stage you use for sharing air
with a buddy should the need arise.
✔✔Submersible Pressure Gauge (SPG) - ✔✔indicates the air pressure remaining in the
cylinder so you can manage your air supply.
✔✔The most important consideration when choosing a regulator is - ✔✔ease of
breathing.
QUESTIONS WITH ANSWERS TAGGED A+
✔✔Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the
way when not in use. T/F - ✔✔True
✔✔When my snorkel is in my mouth, the tip should be - ✔✔over the crown of my head.
✔✔Fins provide a large surface area so my legs can push against the water effectively.
T/F - ✔✔True
✔✔The two basic fin styles are ____________ fins - ✔✔adjustable and full-foot
✔✔My primary considerations when choosing fins are fit and - ✔✔blade size.
✔✔To prepare adjustable fins, I should adjust the straps wearing my wet suit boots. T/F
- ✔✔True
✔✔BCD (Buoyancy Control Device) - ✔✔Holds your 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.
✔✔Cylinder - ✔✔Holds the high-pressure breathing air supplied by your regulator
during the dive.
✔✔Weight system - ✔✔Holds lead weight to counteract the positive buoyancy of your
body and some of your equipment, with a mechanism for dropping some or all the
weight in an emergency.
✔✔There's no real benefit to choosing the components of my scuba kit as an integrated
package. T/F - ✔✔False
✔✔Inflatable bladder - ✔✔This is a very durable bag that you inflate or deflate to
change your buoyancy.
✔✔Cylinder band and harness/jacket - ✔✔The bladder integrates with an adjustable
harness that holds the cylinder on your back. The bladder may be entirely behind you,
or wrap partially around your waist and/or over your shoulders. With some systems, you
can interchange harnesses and bladders to accommodate sizing and preferences.
, ✔✔LPI (low pressure inflator) mechanism - ✔✔Usually at the end of a large-diameter
hose, the LPI inflates the bladder with air from your cylinder, via the regulator, when you
press a button. Another button allows you to deflate the bladder, or inflate it orally.
✔✔Overpressure/quick exhaust valves - ✔✔To prevent rupturing the bladder due to
overfilling, BCDs have one or more overpressure valves that automatically vent if the
BCD is too full. Some may have "quick dump" valves that let you manually release air,
which is sometimes easier (due to your position in the water) than using the LPI
exhaust.
✔✔The LPI mechanism inflates the BCD with air from my scuba cylinder. T/F - ✔✔True
✔✔My BCD should have adequate capacity to easily float my equipment and me at the
surface. T/F - ✔✔True
✔✔My BCD should fit - ✔✔fit snugly but not restrict breathing when fully inflated.
✔✔My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent
with recommended BCD care? - ✔✔Yes
✔✔Five components of your regulator - ✔✔The first stage is the "hub" of your regulator
and supplies air to the components.
Second stage
Alternate air source
Low-pressure inflator hose
The SPG/computer.
✔✔first stage is the "hub" of your regulator - ✔✔supplies air to all the other components.
It connects to the cylinder valve either by screwing into it, or with a yoke (clamp
system).
✔✔second stage - ✔✔It reduces the first stage intermediate pressure to the pressure
around you and delivers air only when you inhale - on demand. It has one-way valves
that vent your exhalation. The purge button lets you manually release air from your
cylinder. comes over your right shoulder
✔✔alternate air source (or "octopus") - ✔✔extra second stage you use for sharing air
with a buddy should the need arise.
✔✔Submersible Pressure Gauge (SPG) - ✔✔indicates the air pressure remaining in the
cylinder so you can manage your air supply.
✔✔The most important consideration when choosing a regulator is - ✔✔ease of
breathing.
