PADI Open Water Diver Practice Exam Questions
with Expert Solutions
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
with Expert Solutions
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
