PADI Open Water Diver Questions with Detailed
Verified Answers
What is buoyancy? Ans: Buoyancy is an upward force produced from a liquid pushing
on an object.
My sunglasses case falls out of my pocket into the water, but fortunately, it floats so I
retrieve it. I would say my sungalsses case is [blank] buoyant. Ans: Positively
Salt water causes more buoyancy than fresh water because it is less dense and weighs
less. True or false? Ans: False. Salt water causes more buoyancy because it is more
dense and weighs more; buoyancy results from the weight of the water displaced.
To control my buoyancy, normally I will use my weight system and my [blank] Ans:
BCD
When I descend, my buoyancy tends to [blank]. When I ascend, it tends to [blank].
Ans: decrease, increase
Underwater, when I inhale, my buoyancy [blank] Ans: increases slightly
It is important to master buoyancy control because it affects almost everything I do in
and underwater. True or false? Ans: True
As you descend in water the pressure increases, decreases or doesn't change? Ans:
increases
A depth change of 10 meters/33 feet causes a pressure change of 1, 2, 3, or 4 bar/ata?
Ans: 1 bar/ata
If you take 6 litres of air from the surface to 20 metres/66 feet, the volume will be
[blank] litres. 1,2,3,4 Ans: 2
, The density of 6 liters of air at 20 metres/66 feet would be [blank] the density at the
surface Ans: 3 times
A balloon fully inflated and sealed at 10 metres/33 feet, would probably [blank] during
ascent to the surface. Ans: burst
As I descend, increasing pressure affects my - choose all that apply - mask, ears,
sinuses, skin Ans: mask, ears, sinuses
A squeeze is caused by Ans: a pressure imbalance between the surrounding pressure
and an air space
Equalization is the process of Ans: adding air to an air space
When should I equalize? Ans: before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is Ans: stop my
descent and signal my buddy
Why do I equalize gently Ans: so I don't cause permanent damage to my ears and
hearing
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or
allergy. I should Ans: cancel the dive until I am well
When scuba diving, normal breathing keeps your lungs equalized to the surrounding
pressure Ans: True
The most important rule in scuba diving is to Ans: breathe continuously and never
hold your breath
© Get it right 2025 Getaway - Stuvia US All rights reserved
Verified Answers
What is buoyancy? Ans: Buoyancy is an upward force produced from a liquid pushing
on an object.
My sunglasses case falls out of my pocket into the water, but fortunately, it floats so I
retrieve it. I would say my sungalsses case is [blank] buoyant. Ans: Positively
Salt water causes more buoyancy than fresh water because it is less dense and weighs
less. True or false? Ans: False. Salt water causes more buoyancy because it is more
dense and weighs more; buoyancy results from the weight of the water displaced.
To control my buoyancy, normally I will use my weight system and my [blank] Ans:
BCD
When I descend, my buoyancy tends to [blank]. When I ascend, it tends to [blank].
Ans: decrease, increase
Underwater, when I inhale, my buoyancy [blank] Ans: increases slightly
It is important to master buoyancy control because it affects almost everything I do in
and underwater. True or false? Ans: True
As you descend in water the pressure increases, decreases or doesn't change? Ans:
increases
A depth change of 10 meters/33 feet causes a pressure change of 1, 2, 3, or 4 bar/ata?
Ans: 1 bar/ata
If you take 6 litres of air from the surface to 20 metres/66 feet, the volume will be
[blank] litres. 1,2,3,4 Ans: 2
, The density of 6 liters of air at 20 metres/66 feet would be [blank] the density at the
surface Ans: 3 times
A balloon fully inflated and sealed at 10 metres/33 feet, would probably [blank] during
ascent to the surface. Ans: burst
As I descend, increasing pressure affects my - choose all that apply - mask, ears,
sinuses, skin Ans: mask, ears, sinuses
A squeeze is caused by Ans: a pressure imbalance between the surrounding pressure
and an air space
Equalization is the process of Ans: adding air to an air space
When should I equalize? Ans: before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is Ans: stop my
descent and signal my buddy
Why do I equalize gently Ans: so I don't cause permanent damage to my ears and
hearing
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or
allergy. I should Ans: cancel the dive until I am well
When scuba diving, normal breathing keeps your lungs equalized to the surrounding
pressure Ans: True
The most important rule in scuba diving is to Ans: breathe continuously and never
hold your breath
© Get it right 2025 Getaway - Stuvia US All rights reserved
