PADI Open Water Diver Final Exam
Questions and Verified Solutions 2024
Update
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as - Answer -18
metres/60 feet
As you descend in water, the pressure - Answer -increases
A depth change of 10 metres/33 feet causes a pressure change of - Answer -1 bar/ata (atmosphere)
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - 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 - Answer -burst
A squeeze is caused by - Answer -a pressure imbalance between the surrounding pressure and an air
space
Equalization is the process of - Answer -adding air to an air space
The most important rule in scuba diving is to - Answer -breathe continuously and never hold your breath
During ascent I feel discomfort in my ears. I should - 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 -
Answer -faster than
The most efficient way to breathe dense air underwater is to breathe - Answer -deeply and slowly
Buoyancy - Answer -a force that pushes an object in water upward
Salt water causes more buoyancy than fresh water because it is _____ dense and weighs _____ - Answer
-more
When I descend, my buoyancy tends to ________. When I ascend, it tends to _______ - Answer -
decrease, increase
The three most important considerations in choosing scuba equipment are suitability, fit, and - Answer -
comfort
, The two basic fin styles are __________ fins - Answer -adjustable and full-foot
My primary considerations when choosing fins are fit and - Answer -blade size
BCD (buoyancy control device) - Answer -holds your kit together and allows you to adjust buoyancy
throughout the dive
Regulator - Answer -delivers breathing air at the surrounding pressure when you inhale and directs
exhaled air into the air
Cylinder - Answer -holds the high-pressure breathing air supplied by your regulator during the dive
Weight System - 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 - 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 - Answer -inflates the BCD with air from my scuba cylinder
Burst disk - 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 _________ - Answer -every 2-5
years, annually
The most important feature in my weight system is its - Answer -quick release
Trim means having the right _____ of weight - 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 - Answer -true
An object that is neutrally bouyant in fresh water will _____ in salt water - Answer -float
Underwater objects appear - Answer -larger and/or closer
Sound travels about 4 times _____ in water than in air, making it difficult to determine its source -
Answer -faster
To move efficiently as a diver, I should move - Answer -slowly and steadily
Trim is important for streamlining because - Answer -poor trim raises or lowers my feet, causing drag
Overexertion results from - Answer -a prolonged increased effort
Buddy Predive Safety Check - Answer -Begin With Review And Friend
Questions and Verified Solutions 2024
Update
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as - Answer -18
metres/60 feet
As you descend in water, the pressure - Answer -increases
A depth change of 10 metres/33 feet causes a pressure change of - Answer -1 bar/ata (atmosphere)
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - 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 - Answer -burst
A squeeze is caused by - Answer -a pressure imbalance between the surrounding pressure and an air
space
Equalization is the process of - Answer -adding air to an air space
The most important rule in scuba diving is to - Answer -breathe continuously and never hold your breath
During ascent I feel discomfort in my ears. I should - 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 -
Answer -faster than
The most efficient way to breathe dense air underwater is to breathe - Answer -deeply and slowly
Buoyancy - Answer -a force that pushes an object in water upward
Salt water causes more buoyancy than fresh water because it is _____ dense and weighs _____ - Answer
-more
When I descend, my buoyancy tends to ________. When I ascend, it tends to _______ - Answer -
decrease, increase
The three most important considerations in choosing scuba equipment are suitability, fit, and - Answer -
comfort
, The two basic fin styles are __________ fins - Answer -adjustable and full-foot
My primary considerations when choosing fins are fit and - Answer -blade size
BCD (buoyancy control device) - Answer -holds your kit together and allows you to adjust buoyancy
throughout the dive
Regulator - Answer -delivers breathing air at the surrounding pressure when you inhale and directs
exhaled air into the air
Cylinder - Answer -holds the high-pressure breathing air supplied by your regulator during the dive
Weight System - 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 - 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 - Answer -inflates the BCD with air from my scuba cylinder
Burst disk - 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 _________ - Answer -every 2-5
years, annually
The most important feature in my weight system is its - Answer -quick release
Trim means having the right _____ of weight - 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 - Answer -true
An object that is neutrally bouyant in fresh water will _____ in salt water - Answer -float
Underwater objects appear - Answer -larger and/or closer
Sound travels about 4 times _____ in water than in air, making it difficult to determine its source -
Answer -faster
To move efficiently as a diver, I should move - Answer -slowly and steadily
Trim is important for streamlining because - Answer -poor trim raises or lowers my feet, causing drag
Overexertion results from - Answer -a prolonged increased effort
Buddy Predive Safety Check - Answer -Begin With Review And Friend
