Page | 1
PADI OPEN WATER 2025 BRAND NEW ACTUAL EXAM WITH
100% VERIFIED QUESTIONS AND CORRECT SOLUTIONS|
ACE YOUR GRADES.
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
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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
, Page | 3
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 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
PADI OPEN WATER 2025 BRAND NEW ACTUAL EXAM WITH
100% VERIFIED QUESTIONS AND CORRECT SOLUTIONS|
ACE YOUR GRADES.
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
, Page | 2
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
, Page | 3
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 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
