PADI Open Water Diver Final Exam
✅✅
As a newly certified PADI Open Water Diver, I will be trained to dive with
buddy as deep as - -18 metres/60 feet
As you descend in water, the pressure - ✅✅-increases
A depth change of 10 metres/33 feet causes a pressure change of - ✅✅-1
bar/ata (atmosphere)
✅✅
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will
be - -2 litres (the density of the air would be three times the density at
the surface)
✅✅
A balloon fully inflated and sealed at 10 metres/33 feet, would probably
______ during ascent to the surface - -burst
A squeeze is caused by - ✅✅ -a pressure imbalance between the
surrounding pressure and an air space
✅✅-adding air to an air space
Equalization is the process of -
The most important rule in scuba diving is to - ✅✅-breathe continuously and
never hold your breath
During ascent I feel discomfort in my ears. I should - ✅✅-stop, descend
slightly, and allow trapped air to work its way out
✅✅
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
_____ at 6 metres/20 feet - -faster than
✅✅
The most efficient way to breathe dense air underwater is to breathe -
-deeply and slowly
Buoyancy - ✅✅-a force that pushes an object in water upward
✅✅
Salt water causes more buoyancy than fresh water because it is _____ dense
and weighs _____ - -more
, ✅✅
When I descend, my buoyancy tends to ________. When I ascend, it tends to
_______ - -decrease, increase
✅✅
The three most important considerations in choosing scuba equipment are
suitability, fit, and - -comfort
✅✅-adjustable and full-foot
The two basic fin styles are __________ fins -
My primary considerations when choosing fins are fit and - ✅✅-blade size
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 air
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
The five components that make up a BCD include - ✅✅ -an inflatable
bladder, a cylinder band and harness/jacket, an LPI (low-pressure inflator)
mechanism, an overpressure/quick exhaust valves, and a weight system
LPI mechanism - ✅✅-inflates the BCD with air from my scuba cylinder
Burst disk -✅✅ -a safety device that relieves accidental overpressure by
releasing air before reaching the pressure at which the cylinder would fail
✅✅
scuba cylinders require pressure testing _______ and visual inspection
_________ - -every 2-5 years, annually
The most important feature in my weight system is its - ✅✅-quick release
Trim means having the right _____ of weight - ✅✅-distribution
✅✅
As a newly certified PADI Open Water Diver, I will be trained to dive with
buddy as deep as - -18 metres/60 feet
As you descend in water, the pressure - ✅✅-increases
A depth change of 10 metres/33 feet causes a pressure change of - ✅✅-1
bar/ata (atmosphere)
✅✅
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will
be - -2 litres (the density of the air would be three times the density at
the surface)
✅✅
A balloon fully inflated and sealed at 10 metres/33 feet, would probably
______ during ascent to the surface - -burst
A squeeze is caused by - ✅✅ -a pressure imbalance between the
surrounding pressure and an air space
✅✅-adding air to an air space
Equalization is the process of -
The most important rule in scuba diving is to - ✅✅-breathe continuously and
never hold your breath
During ascent I feel discomfort in my ears. I should - ✅✅-stop, descend
slightly, and allow trapped air to work its way out
✅✅
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
_____ at 6 metres/20 feet - -faster than
✅✅
The most efficient way to breathe dense air underwater is to breathe -
-deeply and slowly
Buoyancy - ✅✅-a force that pushes an object in water upward
✅✅
Salt water causes more buoyancy than fresh water because it is _____ dense
and weighs _____ - -more
, ✅✅
When I descend, my buoyancy tends to ________. When I ascend, it tends to
_______ - -decrease, increase
✅✅
The three most important considerations in choosing scuba equipment are
suitability, fit, and - -comfort
✅✅-adjustable and full-foot
The two basic fin styles are __________ fins -
My primary considerations when choosing fins are fit and - ✅✅-blade size
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 air
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
The five components that make up a BCD include - ✅✅ -an inflatable
bladder, a cylinder band and harness/jacket, an LPI (low-pressure inflator)
mechanism, an overpressure/quick exhaust valves, and a weight system
LPI mechanism - ✅✅-inflates the BCD with air from my scuba cylinder
Burst disk -✅✅ -a safety device that relieves accidental overpressure by
releasing air before reaching the pressure at which the cylinder would fail
✅✅
scuba cylinders require pressure testing _______ and visual inspection
_________ - -every 2-5 years, annually
The most important feature in my weight system is its - ✅✅-quick release
Trim means having the right _____ of weight - ✅✅-distribution
