Padi Open Water Exam NEWEST 2025 COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS)|ALREADY GRADED A+||BRAND
NEW VERSION!!
How does increasing depth affect how long your air supply lasts? - CORRECT ANSWER- the
deeper you descend, the denser the air becomes.
It takes 4X the effort to breathe twice as fast
What's the most efficient way to breathe dense air underwater? - CORRECT ANSWER- take
deep, slow breaths
Why does a diver need a mask? - CORRECT ANSWER- creates an air space, so your eyes can
focus
As you go deeper, you consume air from your scuba cylinder _____ - CORRECT ANSWER- faster
Why does the mask need to enclose your nose? - CORRECT ANSWER- to equalize during your
descent to prevent mask squeeze
What 6 features should you look for in a mask? - CORRECT ANSWER- 1) tempered glass
2) comfortable skirt with a good seal
3) nose or finger pockets
,4) low profile
5) Adjustable strap that can be locked in place
6) wide field of vision
When buying a mask, what are the 2 most important features? - CORRECT ANSWER- fit and
comfort
How do you prepare a new mask for use? - CORRECT ANSWER- use a soft cloth with a low
abrasion cleaner to remove the protective chemical
adjust the strap
What is the most important rule of scuba diving? - CORRECT ANSWER- Do not hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? - CORRECT
ANSWER- Lung over expansion
severe injuries, death
What is a reverse block? - CORRECT ANSWER- pain and discomfort caused by expanding air
trapped inside an air space during ascent
What should you do if you feel discomfort during ascent due to air expansion in the ears,
sinuses, stomach, intestines, or teeth? - CORRECT ANSWER- slow or stop ascent
descend a metre/few feet and give the trapped air time to work its way out
What 3 general maintenance procedures apply to mask care? - CORRECT ANSWER- 1) rinse
thoroughly with fresh H2o
,2) keep out of direct sunlight
3) store in a cool, dry place
Why does a diver need a snorkel? - CORRECT ANSWER- 1) lets you rest or swim with your face
in the water, without wasting cylinder air
2) makes it easier to breathe when the surface is rough
3) makes it easier to swim back, when you are running low on air
What 3 features does an easy-breathing snorkel have? - CORRECT ANSWER- 1) large diameter
(bore)
2) Not excessively long
3) Designed with smooth, rounded bends
How do you prepare a snorkel for use? - CORRECT ANSWER- 1) attach it to the left of your
mask
2) Adjust snorkel keeper, so the top of the snorkel sits at the crown of your head with the
mouthpiece in place
3) remains in your mouth with a relaxed jaw
Why does a diver need fins? - CORRECT ANSWER- provide a large surface area, so leg muscles
can move through the water
What are the 2 basic fin styles? - CORRECT ANSWER- 1) adjustable strap - open heel
2) full-foot
, What blade design features may enhance a fin's performance? - CORRECT ANSWER- Ribs- add
rigidity, act as vertical stabilizers
Vents- reduce resistance to fin and increase efficiency
channels- increase efficiency by guiding water smoothly
split- designed to thrust water straight back for max efficiency
How do you prepare new fins for use? - CORRECT ANSWER- full foot- no preparation
adjustable strap- need to adjust
What 3 considerations do you have when buying a specific type of fin? - CORRECT ANSWER-
size
physical ability
where you plan to dive
Why does a diver need a BCD? - CORRECT ANSWER- allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
Why do divers need a back pack? - CORRECT ANSWER- to hold the cylinder
Of the 3 styles of BCD, which is the most commonly used by recreational divers? - CORRECT
ANSWER- jacket style
What 5 features do BCDs have in common? - CORRECT ANSWER- 1) enough air
2) large diameter inflation/deflation hose
3) low pressure inflation system
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS)|ALREADY GRADED A+||BRAND
NEW VERSION!!
How does increasing depth affect how long your air supply lasts? - CORRECT ANSWER- the
deeper you descend, the denser the air becomes.
It takes 4X the effort to breathe twice as fast
What's the most efficient way to breathe dense air underwater? - CORRECT ANSWER- take
deep, slow breaths
Why does a diver need a mask? - CORRECT ANSWER- creates an air space, so your eyes can
focus
As you go deeper, you consume air from your scuba cylinder _____ - CORRECT ANSWER- faster
Why does the mask need to enclose your nose? - CORRECT ANSWER- to equalize during your
descent to prevent mask squeeze
What 6 features should you look for in a mask? - CORRECT ANSWER- 1) tempered glass
2) comfortable skirt with a good seal
3) nose or finger pockets
,4) low profile
5) Adjustable strap that can be locked in place
6) wide field of vision
When buying a mask, what are the 2 most important features? - CORRECT ANSWER- fit and
comfort
How do you prepare a new mask for use? - CORRECT ANSWER- use a soft cloth with a low
abrasion cleaner to remove the protective chemical
adjust the strap
What is the most important rule of scuba diving? - CORRECT ANSWER- Do not hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? - CORRECT
ANSWER- Lung over expansion
severe injuries, death
What is a reverse block? - CORRECT ANSWER- pain and discomfort caused by expanding air
trapped inside an air space during ascent
What should you do if you feel discomfort during ascent due to air expansion in the ears,
sinuses, stomach, intestines, or teeth? - CORRECT ANSWER- slow or stop ascent
descend a metre/few feet and give the trapped air time to work its way out
What 3 general maintenance procedures apply to mask care? - CORRECT ANSWER- 1) rinse
thoroughly with fresh H2o
,2) keep out of direct sunlight
3) store in a cool, dry place
Why does a diver need a snorkel? - CORRECT ANSWER- 1) lets you rest or swim with your face
in the water, without wasting cylinder air
2) makes it easier to breathe when the surface is rough
3) makes it easier to swim back, when you are running low on air
What 3 features does an easy-breathing snorkel have? - CORRECT ANSWER- 1) large diameter
(bore)
2) Not excessively long
3) Designed with smooth, rounded bends
How do you prepare a snorkel for use? - CORRECT ANSWER- 1) attach it to the left of your
mask
2) Adjust snorkel keeper, so the top of the snorkel sits at the crown of your head with the
mouthpiece in place
3) remains in your mouth with a relaxed jaw
Why does a diver need fins? - CORRECT ANSWER- provide a large surface area, so leg muscles
can move through the water
What are the 2 basic fin styles? - CORRECT ANSWER- 1) adjustable strap - open heel
2) full-foot
, What blade design features may enhance a fin's performance? - CORRECT ANSWER- Ribs- add
rigidity, act as vertical stabilizers
Vents- reduce resistance to fin and increase efficiency
channels- increase efficiency by guiding water smoothly
split- designed to thrust water straight back for max efficiency
How do you prepare new fins for use? - CORRECT ANSWER- full foot- no preparation
adjustable strap- need to adjust
What 3 considerations do you have when buying a specific type of fin? - CORRECT ANSWER-
size
physical ability
where you plan to dive
Why does a diver need a BCD? - CORRECT ANSWER- allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
Why do divers need a back pack? - CORRECT ANSWER- to hold the cylinder
Of the 3 styles of BCD, which is the most commonly used by recreational divers? - CORRECT
ANSWER- jacket style
What 5 features do BCDs have in common? - CORRECT ANSWER- 1) enough air
2) large diameter inflation/deflation hose
3) low pressure inflation system
