PADI Open Water Diver Final Exam
Review: 100 Practice Questions with
Verified Answers & Rationales (Dive
Physics, Physiology, Equipment,
Decompression, Safety)
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
1
, 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
2
Review: 100 Practice Questions with
Verified Answers & Rationales (Dive
Physics, Physiology, Equipment,
Decompression, Safety)
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
1
, 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
2
