Scuba Test
A depth change of 10 meters/33 feet causes a pressure change of
1 bar/ata
Accessory weights
Can help you adjust your trim
When I descend, my buoyancy tends to ________. When I ascend, it tends to _______.
Decrease ; Increase
My SPG is always part of my dive computer
False
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be
2 Liters
The most efficient way to breath dense air underwater is to breath
Deeply and slowly
My BCD should fit
Fit snugly but not restrict breathing when fully inflated
As you descend in water the pressure
Increases
Underwater when I inhale my buoyancy
Increases slightly
I should have my scuba cylinder filled
Only be reputable scuba air stations
When diving in a new dive environment, two benefits of seeking an orientation, supervision and/or additional training are that it helps me avoid problems and that it helps me enjoy the dive more
True
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as
18 meters or 60 feet
The density of the air in the previous question would be ______ the density at the surface
3 times
Identify the four systems that make up a scuba kit
A = regulator B = cylinder C = Weight system D = BCD
My primary considerations when choosing fins are fit and
A blade size
A squeeze is caused by
A pressure imbalance between the surrounding pressure and an air space
Trim means having the right ___ of weight
Distribution
I should equalize
Early and often, before I feel discomfort
The most important consideration when choosing a regulator is
Ease of breathing
After 30 minutes underwater, I start to feel a bit too cool and uncomfortable. I should
End the dive
While diving, I start to feel cool and shortly begin to shiver uncontrollably. I should
End the dive immediately, dry off and seek warmth
My mask encloses my nose so I can
Equalize the mask
Scuba cylinders require pressure testing _______, and visual inspection _________
Every 2-5 years, annually
A cylinder with a higher working pressure always hold more air than cylinder with a lower working pressure
False
From among masks that fit me I should choose a mask that fits as far away from my face as possible
False
Salt water causes more buoyancy than fresh water because it is less dense and weighs less
False
There is no way to use a DIN regulator on a yoke cylinder valve
False
While my buddy and I are diving, a motorboat passes by about 300 meters/yards away. Which of the following statements is true?
I may have difficulty determining where the boat is based on the sound
Before each use, I should _____ my equipment
Inspect
Underwater objects appear
Larger and/or closer
My buddy has a bright red shoulder patch on his wet suit. If we're diving together in very clear water on a sunny day, at 12 metres/40 feet I would expect the patch to appear ________
Less red than at the surface
As I descend, increasing pressure affects my (3 things)
Mask, ears, and sinuses
PADI courses are performance based. This means that to be certified, I must..
Meet specific performance requirements
I need a mask because
My eyes must be in air to focus
I'm renting a scuba cylinder at a dive resort. Among the cylinders for hire, some have green and yellow bands that read "Nitrox." As a PADI Open Water Diver with no other training or instructor supervision, am I qualified to use one of these cylinders?
No
When my snorkel is in my mouth the tip should be
Over the crown of my head
Trim is important for streamlining because
Poor trim raises or lowers my feet, causing drag
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 ______ buoyant
Positively
Overall benefits of the buddy system includes
Practicality, safety, and fun
The most important feature in my weight system is its
Quick release
One method of airway control is to inhale slowly. I can also ________ to help breathe past small amounts of water in my regulator.
Raise my tongue
I bring a cylinder aboard a dive boat in preparation for a trip out to a nearby reef. The normal procedure would be to
Secure the cylinder in a rack
When setting up and wearing my kit, the alternate air source
Secures in the triangle formed by my hips and chin
While scuba diving, I should breath
Slowly and deeply
During a descent, I try to equalize but discover I'm having trouble doing so. Which of the following is correct?
Stop my descent, signal my buddy, ascend slightly and try again
During ascent I feel discomfort in my ears. I should
Stop, descend slightly and allow trapped air to work its way out
If I feel discomfort in a body air space while ascending, the correct action is to
Stop, descend slightly and give trapped air time to work its way out
The primary considerations when choosing any piece of scuba gear are
Suitability, fit, and comfort
Because water is denser than air, it takes more effort to move through water
True
Buoyancy is a force that pushes an object in water upward
True
Certain medical conditions can be hazardous while diving, so it is important to answer all questions on the Medical Statement honestly and completely
True
Failure to complete assigned independent study can create significant delays, and my instructor may have to cancel and reschedule sessions until i complete the assignment
True
Failure to follow the most important rule in scuba diving can cause serious lung over expansion (lung rupture) injuries, which in turn can cause paralysis and death
True
Failure to follow the most important rule in scuba diving can cause severe lung over expansion injuries, which can result in paralysis or death
True
Fins provide a large surface area so my legs can push against the water effectively
True
It is important to master buoyancy control because it affects almost everything I do in and underwater
True
My BCD should have adequate capacity to easily float my equipment and me at the surface
True
My local dive pro will usually set up my regulator components
True
One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one
True
Regulators need periodic overhauls typically every year to two years
True
The LPI mechanism inflates the BCD with air from my scuba cylinder
True
The three overall benefits of the buddy system are practicality, safety, and fun
True
To stay comfortably warm during a dive, I
Wear an appropriate exposure suit
My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care?
Yes
I want to adjust my mask so the strap rests
Above my ears, over the crown of my head
Equalization is the process of
Adding air to an air space
The two basic fin styles are __________ fins
Adjustable and full foot
To control my buoyancy, normally I will use my weight system and my
BCD
I should equalize
Before I feel pain or discomfort
When choosing an alternate air source, a primary consideration involves deciding
Between independence and simplicity
As I descend, i need to equalize air spaces. Which of the following are accepted ways of equalizing my ears?
Block my nose and attempt to gently blow through it, and swallow and wiggle the jaw from side to side
Which of the following are among the breathing rules I follow as a diver?
Breath continuously and never hold my breath, breath slowly and deeply, do not allow myself to get winded or out of breath, and if faced with a problem stop then maintain or restore slow, deep breathing
The most important rule in scuba diving is
Breathe continuously and never hold my breath
The most important rule in scuba is to
Breathe continuously and never hold your breath
A ballon fully inflated and sealed at 10 meters/33 feet, would probably ____ during ascent to the surface
Burst
The _____ is a safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail
Burst disk
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I should
Cancel the dive until I'm well
The three most important considerations in choosing scuba equipment are suitability, fit and
Comfort
Water's density works best for me when i use the skill of
Controlling my buoyancy
There's no real benefit to choosing the components of my scuba kit as an integrated package
False
My buddy and I descend to 12 meters/40 feet. I would expect to use my air ____ at 6 meters/20 feet.
Faster than
An object that is neutrally buoyant in fresh water will ____ in salt water
Float
I'm planning to dive the following week and am checking my gear. I put my kit together and notice that my regulator seems to breathe harder than I remember. The appropriate action would be to
Have it inspected and serviced as needed by a professional before using it
My buddy and I are planning a dive to 18 meters/60 feet. We would expect our air supply to last ____ at 10 meters/33 feet, all else being the same
Shorter than
To move efficiently as a diver, I should move
Slowly and steadily
During a dive, I swim hard to keep up with the fish that interests me, but shortly I begin to feel like I can't get enough air. The correct action would be to
Stop all activity and rest to restore proper deep, slow breathing
I'm descending and discover I can't equalize. The first thing I would do is
Stop my descent and signal my buddy/instructor
Getting the service my gear needs may be a consideration when choosing equipment
True
I chill faster in water than in air of the same temperature because water absorbs more heat than air does.
True
I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing
True
I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight
True
I should not dive with a cold, nor use medications to dive with a cold
True
In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits
True
It is important to master buoyancy control because it allows me to control whether I descend, float or am neutrally buoyant. I adjust my buoyancy frequently while diving
True
My body responds to anxiety with increased breathing but slow breathing helps to reduce anxiety
True
Snorkels are standard equipment for scuba diving because they allow me to breathe with my face in the water or in rough conditions without wasting my scuba air especially when I have little scuba air remaining
True
Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use.
True
Streamlining benefits me as a diver because it reduces drag, which helps me save energy
True
To prepare adjustable fins, I should adjust the straps wearing my wet suit boots
True
When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure
True