PADI Open Water Diver Exam Questions With In-Depth
Solutions.
What is buoyancy? - accurate answers-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 sunglasses case is [blank] buoyant. -
accurate answers-Positively
Salt water causes more buoyancy than fresh water because it is less dense and
weighs less. True or false? - accurate answers-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]
- accurate answers-BCD
When I descend, my buoyancy tends to [blank]. When I ascend, it tends to
[blank]. - accurate answers-decrease, increase
Underwater, when I inhale, my buoyancy [blank] - accurate answers-increases
slightly
It is important to master buoyancy control because it affects almost
everything I do in and underwater. True or false? - accurate answers-True
As you descend in water the pressure increases, decreases or doesn't change?
- accurate answers-increases
A depth change of 10 meters/33 feet causes a pressure change of 1, 2, 3, or 4
bar/ata? - accurate answers-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 - accurate answers-2
The density of 6 liters of air at 20 metres/66 feet would be [blank] the density
at the surface - accurate answers-3 times
, A balloon fully inflated and sealed at 10 metres/33 feet, would probably
[blank] during ascent to the surface. - accurate answers-burst
As I descend, increasing pressure affects my - choose all that apply - mask,
ears, sinuses, skin - accurate answers-mask, ears, sinuses
A squeeze is caused by - accurate answers-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - accurate answers-adding air to an air space
When should I equalize? - accurate answers-before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is -
accurate answers-stop my descent and signal my buddy
Why do I equalize gently - accurate answers-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 - accurate answers-cancel the dive until I am well
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure - accurate answers-True
The most important rule in scuba diving is to - accurate answers-breathe
continuously and never hold your breath
Failure to follow the most important rule in scuba diving can cause severe
lung over-expansion injuries, which can result in paralysis or death - accurate
answers-True
During ascent I feel discomfort in my ears. I should - accurate answers-stop,
descend slightly and allow trapped air to work its way out
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
[blank] at 6 metres/20 feet. slower than, faster than, at the same rate as... -
accurate answers-faster than
Solutions.
What is buoyancy? - accurate answers-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 sunglasses case is [blank] buoyant. -
accurate answers-Positively
Salt water causes more buoyancy than fresh water because it is less dense and
weighs less. True or false? - accurate answers-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]
- accurate answers-BCD
When I descend, my buoyancy tends to [blank]. When I ascend, it tends to
[blank]. - accurate answers-decrease, increase
Underwater, when I inhale, my buoyancy [blank] - accurate answers-increases
slightly
It is important to master buoyancy control because it affects almost
everything I do in and underwater. True or false? - accurate answers-True
As you descend in water the pressure increases, decreases or doesn't change?
- accurate answers-increases
A depth change of 10 meters/33 feet causes a pressure change of 1, 2, 3, or 4
bar/ata? - accurate answers-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 - accurate answers-2
The density of 6 liters of air at 20 metres/66 feet would be [blank] the density
at the surface - accurate answers-3 times
, A balloon fully inflated and sealed at 10 metres/33 feet, would probably
[blank] during ascent to the surface. - accurate answers-burst
As I descend, increasing pressure affects my - choose all that apply - mask,
ears, sinuses, skin - accurate answers-mask, ears, sinuses
A squeeze is caused by - accurate answers-a pressure imbalance between the
surrounding pressure and an air space
Equalization is the process of - accurate answers-adding air to an air space
When should I equalize? - accurate answers-before I feel pain or discomfort
I'm descending and discover I can't equalize. The first thing I would do is -
accurate answers-stop my descent and signal my buddy
Why do I equalize gently - accurate answers-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 - accurate answers-cancel the dive until I am well
When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure - accurate answers-True
The most important rule in scuba diving is to - accurate answers-breathe
continuously and never hold your breath
Failure to follow the most important rule in scuba diving can cause severe
lung over-expansion injuries, which can result in paralysis or death - accurate
answers-True
During ascent I feel discomfort in my ears. I should - accurate answers-stop,
descend slightly and allow trapped air to work its way out
My buddy and I descend to 12 metres/40 feet. I would expect to use my air
[blank] at 6 metres/20 feet. slower than, faster than, at the same rate as... -
accurate answers-faster than
