PADI OPen WAter FInAl exAm B |
2026/2027 eDItIOn | 100% COrreCt
AnsWers | VerIFIeD & UPDAteD | OPen
WAter DIVer CertIFICAtIOn
SCUBA - Answer-Self contained underwater breathing apparatus
What is the pressure change for each 10m/33ft of depth change? - Answer-1
bar/1 ata/1 atmosphere
What is the relationship between my depth in water and the pressure? - Answer-
The deeper you go in water, the more the pressure increases
Pressure is expressed as the weight of air
What is the relationship between pressure, and the volume and the density of air?
- Answer-As pressure increases, the gas volume decreases and the gas density
increases
If I take a volume of air from one depth to another depth, how much will the
volume and density change? - Answer-Volume will be 1/ata#
Density will be ata#
,What 3 major body air spaces does increasing pressure affect as I descend? -
Answer-Ears, sinuses, mask
What is a "squeeze"? - Answer-The discomfort caused by pressure imbalance
pulling tissue into the air space
What is "equalization"? - Answer-The addition of air to your air spaces as you
descend
How do I equalize as I descend? - Answer-For ears and sinuses, pinch your nose
and blow gently, or wiggle your jaw and swallow
For mask, blow into it with nose
How often should I equalize? - Answer-Every meter/few feet, BEFORE you feel
discomfort
What should I do if I can't equalize? - Answer-Stop your descent, signal problem
and point to your ear, ascend a bit, and try again
What can happen if I don't or can't equalize gently and keep descending? -
Answer-Fluid can rupture the eardrum
Bruising around the face can occur
Why does a congestion from a cold or allergy temporarily keep me from diving? -
Answer-Congestion might block normal air flow, making equalization difficult or
impossible
, What is assessing conditions based on? - Answer-The weather, season, water
motion, water appearance, reports online and from other divers, and dives made
at similar sites
What should I do if I see a potentially aggressive animal underwater? - Answer-
Remain still and calm. Swim away if you become uncomfortable
In what depth water do waves break? - Answer-In the surf zone, in water only
slightly deeper than their height
surge - Answer-A back-and-forth motion caused by waves passing overhead
undertow - Answer-The water of waves flowing back to sea under incoming waves
rip current - Answer-When waves push water over a long obstruction and the
water underneath funnels back to sea through an available opening
What should I do if I get caught in a rip current? - Answer-Establish buoyancy and
swim at a sustainable pace parallel to the shore
upwelling - Answer-Usually caused by wind blowing from shore, pushing surface
water away, resulting in cooler, deeper water rising towards the surface to replace
it
What 3 environmental conditions does tide generally affect? - Answer-The
current, depth, and visibility
2026/2027 eDItIOn | 100% COrreCt
AnsWers | VerIFIeD & UPDAteD | OPen
WAter DIVer CertIFICAtIOn
SCUBA - Answer-Self contained underwater breathing apparatus
What is the pressure change for each 10m/33ft of depth change? - Answer-1
bar/1 ata/1 atmosphere
What is the relationship between my depth in water and the pressure? - Answer-
The deeper you go in water, the more the pressure increases
Pressure is expressed as the weight of air
What is the relationship between pressure, and the volume and the density of air?
- Answer-As pressure increases, the gas volume decreases and the gas density
increases
If I take a volume of air from one depth to another depth, how much will the
volume and density change? - Answer-Volume will be 1/ata#
Density will be ata#
,What 3 major body air spaces does increasing pressure affect as I descend? -
Answer-Ears, sinuses, mask
What is a "squeeze"? - Answer-The discomfort caused by pressure imbalance
pulling tissue into the air space
What is "equalization"? - Answer-The addition of air to your air spaces as you
descend
How do I equalize as I descend? - Answer-For ears and sinuses, pinch your nose
and blow gently, or wiggle your jaw and swallow
For mask, blow into it with nose
How often should I equalize? - Answer-Every meter/few feet, BEFORE you feel
discomfort
What should I do if I can't equalize? - Answer-Stop your descent, signal problem
and point to your ear, ascend a bit, and try again
What can happen if I don't or can't equalize gently and keep descending? -
Answer-Fluid can rupture the eardrum
Bruising around the face can occur
Why does a congestion from a cold or allergy temporarily keep me from diving? -
Answer-Congestion might block normal air flow, making equalization difficult or
impossible
, What is assessing conditions based on? - Answer-The weather, season, water
motion, water appearance, reports online and from other divers, and dives made
at similar sites
What should I do if I see a potentially aggressive animal underwater? - Answer-
Remain still and calm. Swim away if you become uncomfortable
In what depth water do waves break? - Answer-In the surf zone, in water only
slightly deeper than their height
surge - Answer-A back-and-forth motion caused by waves passing overhead
undertow - Answer-The water of waves flowing back to sea under incoming waves
rip current - Answer-When waves push water over a long obstruction and the
water underneath funnels back to sea through an available opening
What should I do if I get caught in a rip current? - Answer-Establish buoyancy and
swim at a sustainable pace parallel to the shore
upwelling - Answer-Usually caused by wind blowing from shore, pushing surface
water away, resulting in cooler, deeper water rising towards the surface to replace
it
What 3 environmental conditions does tide generally affect? - Answer-The
current, depth, and visibility
