PADI Open Water Diver Final Exam
Questions and Answers
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep
as - correct answer-18 metres/60 feet
As you descend in water, the pressure - correct answer-increases
A depth change of 10 metres/33 feet causes a pressure change of - correct answer-1
bar/ata (atmosphere)
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be -
correct answer-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 - correct answer-burst
A squeeze is caused by - correct answer-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - correct answer-adding air to an air space
The most important rule in scuba diving is to - correct answer-breathe continuously and
never hold your breath
During ascent I feel discomfort in my ears. I should - correct answer-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 - correct answer-faster than
The most efficient way to breathe dense air underwater is to breathe - correct answer-
deeply and slowly
Buoyancy - correct answer-a force that pushes an object in water upward
Salt water causes more buoyancy than fresh water because it is _____ dense and
weighs _____ - correct answer-more
, When I descend, my buoyancy tends to ________. When I ascend, it tends to _______
- correct answer-decrease, increase
The three most important considerations in choosing scuba equipment are suitability, fit,
and - correct answer-comfort
The two basic fin styles are __________ fins - correct answer-adjustable and full-foot
My primary considerations when choosing fins are fit and - correct answer-blade size
BCD (buoyancy control device) - correct answer-holds your kit together and allows you
to adjust buoyancy throughout the dive
Regulator - correct answer-delivers breathing air at the surrounding pressure when you
inhale and directs exhaled air into the air
Cylinder - correct answer-holds the high-pressure breathing air supplied by your
regulator during the dive
Weight System - correct answer-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 - correct answer-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 - correct answer-inflates the BCD with air from my scuba cylinder
Burst disk - correct answer-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 _________ -
correct answer-every 2-5 years, annually
The most important feature in my weight system is its - correct answer-quick release
Trim means having the right _____ of weight - correct answer-distribution
Failure to follow the most important rule in scuba diving can cause serious lung
overexpansion injuries, which in turn can cause paralysis and death - correct answer-
true
An object that is neutrally bouyant in fresh water will _____ in salt water - correct
answer-float
Questions and Answers
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep
as - correct answer-18 metres/60 feet
As you descend in water, the pressure - correct answer-increases
A depth change of 10 metres/33 feet causes a pressure change of - correct answer-1
bar/ata (atmosphere)
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be -
correct answer-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 - correct answer-burst
A squeeze is caused by - correct answer-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - correct answer-adding air to an air space
The most important rule in scuba diving is to - correct answer-breathe continuously and
never hold your breath
During ascent I feel discomfort in my ears. I should - correct answer-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 - correct answer-faster than
The most efficient way to breathe dense air underwater is to breathe - correct answer-
deeply and slowly
Buoyancy - correct answer-a force that pushes an object in water upward
Salt water causes more buoyancy than fresh water because it is _____ dense and
weighs _____ - correct answer-more
, When I descend, my buoyancy tends to ________. When I ascend, it tends to _______
- correct answer-decrease, increase
The three most important considerations in choosing scuba equipment are suitability, fit,
and - correct answer-comfort
The two basic fin styles are __________ fins - correct answer-adjustable and full-foot
My primary considerations when choosing fins are fit and - correct answer-blade size
BCD (buoyancy control device) - correct answer-holds your kit together and allows you
to adjust buoyancy throughout the dive
Regulator - correct answer-delivers breathing air at the surrounding pressure when you
inhale and directs exhaled air into the air
Cylinder - correct answer-holds the high-pressure breathing air supplied by your
regulator during the dive
Weight System - correct answer-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 - correct answer-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 - correct answer-inflates the BCD with air from my scuba cylinder
Burst disk - correct answer-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 _________ -
correct answer-every 2-5 years, annually
The most important feature in my weight system is its - correct answer-quick release
Trim means having the right _____ of weight - correct answer-distribution
Failure to follow the most important rule in scuba diving can cause serious lung
overexpansion injuries, which in turn can cause paralysis and death - correct answer-
true
An object that is neutrally bouyant in fresh water will _____ in salt water - correct
answer-float
