PADI Open Water Diver Certification
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SCUBA - correct answer✔ ✔
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Self contained underwater breathing apparatus
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What is the pressure change for each 10m/33ft of depth ch
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ange? - correct answer✔ ✔ 1 bar/1 ata/1 atmosphere
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What is the relationship between my depth in water and th
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e pressure? - correct answer✔ ✔
FG FG FG FG
The deeper you go in water, the more the pressure increa
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ses
Pressure is expressed as the weight of air
FG FG FG FG FG FG FG
What is the relationship between pressure, and the volume
FG FG FG FG FG FG FG FG FG
and the density of air? - correct answer✔ ✔
FG FG FG FG FG FG FG
As pressure increases, the gas volume decreases and the
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gas density increases
FG FG
If I take a volume of air from one depth to another depth,
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how much will the volume and density change? -
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correct answer✔ ✔ Volume will be 1/ata#
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,Density will be ata# FG FG FG
What 3 major body air spaces does increasing pressure affe
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ct as I descend? - correct answer✔ ✔
FG FG FG FG FG FG
Ears, sinuses, mask
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What is a "squeeze"? - correct answer✔ ✔
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The discomfort caused by pressure imbalance pulling tissu
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e into the air space
FG FG FG FG
What is "equalization"? - correct answer✔ ✔
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The addition of air to your air spaces as you descend
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How do I equalize as I descend? - correct answer✔ ✔
FG FG FG FG FG FG FG FG FG
For ears and sinuses, pinch your nose and blow gently, o
FG FG FG FG FG FG FG FG FG FG
r wiggle your jaw and swallow
FG FG FG FG FG
For mask, blow into it with nose
FG FG FG FG FG FG
How often should I equalize? - correct answer✔ ✔
FG FG FG FG FG FG FG
Every meter/few feet, BEFORE you feel discomfort
FG FG FG FG FG FG
,What should I do if I can't equalize? - correct answer✔
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✔
Stop your descent, signal problem and point to your ear,
FG FG FG FG FG FG FG FG FG FG
ascend a bit, and try again
FG FG FG FG FG
What can happen if I don't or can't equalize gently and ke
FG FG FG FG FG FG FG FG FG FG FG
ep descending? - correct answer✔ ✔
FG FG FG FG
Fluid can rupture the eardrum
FG FG FG FG
Bruising around the face can occur
FG FG FG FG FG
Why does a congestion from a cold or allergy temporarily
FG FG FG FG FG FG FG FG FG FG
keep me from diving? - correct answer✔ ✔
FG FG FG FG FG FG
Congestion might block normal air flow, making equalizat
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ion difficult or impossible
FG FG FG
Why should I never dive with earplugs? - correct answer✔
FG FG FG FG FG FG FG FG FG
✔ They create air spaces that you can't equalize
FG FG FG FG FG FG FG
What other body air spaces are affected by increasing press
FG FG FG FG FG FG FG FG FG
ure? How do I equalize them? - correct answer✔ ✔
FG FG FG FG FG FG FG FG
In filled teeth - go to a dentist
FG FG FG FG FG FG FG
In a dry suit - learn from an instructor
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, Lungs - breathe normally and continuously
FG FG FG FG FG
What is the most important rule in scuba diving? -
FG FG FG FG FG FG FG FG FG
correct answer✔ ✔
FG FG
Breathe continuously and never hold your breath
FG FG FG FG FG FG
What can happen if I don't follow the most important rule
FG FG FG FG FG FG FG FG FG FG F
in scuba diving? - correct answer✔ ✔
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Your lungs will over expand and rupture
FG FG FG FG FG FG
What is a "reverse block"? - correct answer✔ ✔
FG FG FG FG FG FG FG
When expanding air becomes trapped in your body air sp
FG FG FG FG FG FG FG FG FG
aces as you ascend
FG FG FG
What should I do if I feel discomfort in my ears, sinuses,
FG FG FG FG FG FG FG FG FG FG FG FG
stomach, intestines, or teeth while ascending? -
FG FG FG FG FG FG
correct answer✔ ✔
FG FG
Stop your ascent and descend a meter/few feet to reduce
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Gdiscomfort and give trapped air time to work its way out
FG FG FG FG FG FG FG FG FG FG
How does depth affect how long my air supply lasts? -
FG FG FG FG FG FG FG FG FG FG
correct answer✔ ✔
FG FG
FG FG FG FG
SCUBA - correct answer✔ ✔
FG FG FG
Self contained underwater breathing apparatus
FG FG FG FG
What is the pressure change for each 10m/33ft of depth ch
FG FG FG FG FG FG FG FG FG FG
ange? - correct answer✔ ✔ 1 bar/1 ata/1 atmosphere
FG FG FG FG FG FG
What is the relationship between my depth in water and th
FG FG FG FG FG FG FG FG FG FG
e pressure? - correct answer✔ ✔
FG FG FG FG
The deeper you go in water, the more the pressure increa
FG FG FG FG FG FG FG FG FG FG
ses
Pressure is expressed as the weight of air
FG FG FG FG FG FG FG
What is the relationship between pressure, and the volume
FG FG FG FG FG FG FG FG FG
and the density of air? - correct answer✔ ✔
FG FG FG FG FG FG FG
As pressure increases, the gas volume decreases and the
FG FG FG FG FG FG FG FG FG
gas density increases
FG FG
If I take a volume of air from one depth to another depth,
FG FG FG FG FG FG FG FG FG FG FG FG
how much will the volume and density change? -
FG FG FG FG FG FG FG FG FG
correct answer✔ ✔ Volume will be 1/ata#
FG FG FG FG FG
,Density will be ata# FG FG FG
What 3 major body air spaces does increasing pressure affe
FG FG FG FG FG FG FG FG FG
ct as I descend? - correct answer✔ ✔
FG FG FG FG FG FG
Ears, sinuses, mask
FG FG
What is a "squeeze"? - correct answer✔ ✔
FG FG FG FG FG FG
The discomfort caused by pressure imbalance pulling tissu
FG FG FG FG FG FG FG
e into the air space
FG FG FG FG
What is "equalization"? - correct answer✔ ✔
FG FG FG FG FG
The addition of air to your air spaces as you descend
FG FG FG FG FG FG FG FG FG FG
How do I equalize as I descend? - correct answer✔ ✔
FG FG FG FG FG FG FG FG FG
For ears and sinuses, pinch your nose and blow gently, o
FG FG FG FG FG FG FG FG FG FG
r wiggle your jaw and swallow
FG FG FG FG FG
For mask, blow into it with nose
FG FG FG FG FG FG
How often should I equalize? - correct answer✔ ✔
FG FG FG FG FG FG FG
Every meter/few feet, BEFORE you feel discomfort
FG FG FG FG FG FG
,What should I do if I can't equalize? - correct answer✔
FG FG FG FG FG FG FG FG FG FG
✔
Stop your descent, signal problem and point to your ear,
FG FG FG FG FG FG FG FG FG FG
ascend a bit, and try again
FG FG FG FG FG
What can happen if I don't or can't equalize gently and ke
FG FG FG FG FG FG FG FG FG FG FG
ep descending? - correct answer✔ ✔
FG FG FG FG
Fluid can rupture the eardrum
FG FG FG FG
Bruising around the face can occur
FG FG FG FG FG
Why does a congestion from a cold or allergy temporarily
FG FG FG FG FG FG FG FG FG FG
keep me from diving? - correct answer✔ ✔
FG FG FG FG FG FG
Congestion might block normal air flow, making equalizat
FG FG FG FG FG FG FG
ion difficult or impossible
FG FG FG
Why should I never dive with earplugs? - correct answer✔
FG FG FG FG FG FG FG FG FG
✔ They create air spaces that you can't equalize
FG FG FG FG FG FG FG
What other body air spaces are affected by increasing press
FG FG FG FG FG FG FG FG FG
ure? How do I equalize them? - correct answer✔ ✔
FG FG FG FG FG FG FG FG
In filled teeth - go to a dentist
FG FG FG FG FG FG FG
In a dry suit - learn from an instructor
FG FG FG FG FG FG FG FG
, Lungs - breathe normally and continuously
FG FG FG FG FG
What is the most important rule in scuba diving? -
FG FG FG FG FG FG FG FG FG
correct answer✔ ✔
FG FG
Breathe continuously and never hold your breath
FG FG FG FG FG FG
What can happen if I don't follow the most important rule
FG FG FG FG FG FG FG FG FG FG F
in scuba diving? - correct answer✔ ✔
G FG FG FG FG FG
Your lungs will over expand and rupture
FG FG FG FG FG FG
What is a "reverse block"? - correct answer✔ ✔
FG FG FG FG FG FG FG
When expanding air becomes trapped in your body air sp
FG FG FG FG FG FG FG FG FG
aces as you ascend
FG FG FG
What should I do if I feel discomfort in my ears, sinuses,
FG FG FG FG FG FG FG FG FG FG FG FG
stomach, intestines, or teeth while ascending? -
FG FG FG FG FG FG
correct answer✔ ✔
FG FG
Stop your ascent and descend a meter/few feet to reduce
FG FG FG FG FG FG FG FG FG F
Gdiscomfort and give trapped air time to work its way out
FG FG FG FG FG FG FG FG FG FG
How does depth affect how long my air supply lasts? -
FG FG FG FG FG FG FG FG FG FG
correct answer✔ ✔
FG FG
