PADI training for scuba diving

A depth change of 10 metres/33 feet causes a pressure change of

1 bar/ata

If you take 6 litres of air from the surface to 20 metres/66 feet, the volume will be _____ litres

2

As a newly certified PADI Open Water Diver, you'll be trained to dive with a buddy as deep as

60 ft/18 meters

My buddy and I are planning a boat dive with the same type cylinders filled to 200 bar/3000 psi. Due to conditions, we are planning very conservatively. We agree on 60 bar/800 psi for our reserve. We agree that we also want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when either of our SPGs reads

90 bar/1300 PSI

To control my buoyancy, normally I will use my weight system and my

BCD

On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. What should you do

Cancel the dive until you are well

When I conduct a predive safety check, the "A" in the recall phrase includes

Confirming adequate air pressure for the dive

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 and seek warmth

As my buddy and I kit up, the normal practice is to be entirely independent. Helping each other is discouraged. True or False

False

From among masks that fit me, I should choose a mask that fits as far away from my face as possible.-True or False

False

I would never find it necessary to ascend without a reference.- True or False

False

I'm descending in open water with my buddies. After confirming they are ready, the next step is to signal "descend" and slowly deflate my BCD.- True or False

False

My SPG is always part of my dive computer.-True or False

False

Salt water causes more buoyancy than fresh water because it is less dense and weighs less-True or False

False

There's no real benefit to choosing the components of my scuba kit as an integrated package.-True or False

False

My buddy and I descend to 40 feet. I would expect to use my air __________ at 6 metres/20 feet

Faster than

While my buddy and I are diving, a motorboat passes by about 300 metres/yards away. Which of the following statements is true?

I may have difficulty determining where the boat is based on the sound.

My buddy and I have just started our descent. I begin equalizing

Immediately as soon as my head goes underwater

During my descent, to control my buoyancy I add air to my BCD

In small amounts, frequently

Before each use, I should__________________my equipment.

Inspect

Underwater objects appear...

Larger and 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

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.

Positivly

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 tounge

While scuba diving, I should breathe

Slowly and deeply

At the surface, it's a good habit to keep my mask on and my snorkel or regulator in my mouth because it helps me deal with difficulties more effectively.- True or False

True

Because water is denser than air, it takes more effort to move through water. True or False

True

Before starting my ascent, I should check my dive computer to be sure I'm within its limits.- True or False

True

Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death-True or False

True

Fins provide a large surface area so my legs can push against the water effectively.-True or False

True

Getting the service my gear needs may be a consideration when choosing equipment.-True or False

True

I chill faster in water than in air of the same temperature because water absorbs more heat than air does. True or False

True

I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing- True or False

True

I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight.-True or False

True

If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely I am experiencing overexertion. True or False

True

In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits-True or False

True

It is important to master buoyancy control because it affects almost everything I do in and underwater-True or False

True

My BCD should have adequate capacity to easily float my equipment and me at the surface.-True or False

True

My body responds to anxiety with increased breathing, but slow breathing helps reduce anxiety-True or False

True

My buddies and I are planning a dive. Among other things, we should address how to enter and exit the water, the maximum depth and time, when to turn the dive and what to do if we get separated. True or False

True

My local dive pro will usually set up my regulator components.-True or False

True

One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one.-True or False

True

Regulators need periodic overhauls, typically every year to two years.- True or False

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 or False

True

Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use. True or False

True

Streamlining benefits me as a diver because it reduces drag, which helps me save energy. True or False

True

The LPI mechanism inflates the BCD with air from my scuba cylinder.-True or False

True

The most important rule in scuba diving is to breathe continuously and never hold your breath-True or False

True

To prepare adjustable fins, I should adjust the straps wearing my wet suit boots.- True or False

True

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 or False

True

When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure-True or False

True

My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care?

Yes

a squeeze is caused by

a pressure imbalance between the surrounding pressure and an air space

over exhaustion comes from...

a prolonged increased effort.

I want to adjust my mask so the straps fit

above my ears, over the crown of my head.

Equalzation is the process of

adding air into an air space

The two basic fin styles are ____________ fins

adjustable and full-foot

When choosing an alternate air source, a primary consideration involves deciding

between independence and simplicity.

My primary considerations when choosing fins are fit and

blade size

A balloon fully inflated and sealed at 10 metres/33 feet, would probably _______ during ascent to the surface

burst

Accessory weights

can help you adjust your trim.

The three most important considerations in choosing scuba equipmentare suitability, fit and

comfort

Water's density works best for me when I use the skill of

controlling my buoyancy

As I descend while wearing a wet suit, my buoyancy will tend to

decrease

When I descend, my buoyancy tends to _________. When I ascend, it tends to __________.

decrease, increase

The most efficient way to breathe dense air underwater is to breathe...

deeply and slowly

Trim means having the right ________ of weight.

distribution

The most important consideration when choosing a regulator is

ease of breathing

My mask encloses my nose so I can

equalize the mask

Scuba cylinders require pressure testing __________ and visual inspection _________.

every 2-5 years, annually

My BCD should fit...

fit snugly but not restrict breathing when fully inflated. Submit

as you descend the water pressure

increases

My buddies and I plan to enter the water, but swim on the surface to a descent point about 50 metres/yards away. A primary reason we will do this is because.....

it saves our cylinder air for the dive

If my buddy and I get separated , the general procedure is to...?

look for each other for no more than a minute, then reunite on the surface.

As I descend increasing pressure effects my

mask, ears, and sinuses

PADI courses are performance-based. This means that to be certified, you must

meet specific performance requirements

The buddy system is ___________ responsibility.

my

I need a mask because

my eyes must be in air to focus.

For the 50 metre/yard swim, my buddies and I will swim ___________ because it is less tiring.

on our backs

I should have my scuba cylinder filled...

only by reputable scuba air stations.

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. Submit

The most important feature of my weight system is its

quick release

If I think I'm overexerting while underwater, I should stop, signal my buddy and

rest

Overall benefits of the buddy system include

safety, fun, practicality

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.

To stay with my buddy while surface swimming, generally it works well to swim

side by side

Underwater, when I inhale, my buoyancy-increases...

slightly

when I am ascending I should ascend.....

slowly - at my computer's required rate.

To move efficiently as a diver, I should move...

slowly and steadily

I'm descending and discover I can't equalize. The first thing I would do is

stop my descent and signal my buddy/the instructor

Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death-What do you do?

stop, descend slightly and allow trapped air to work its way out

Which are among the breathing rules I follow as a diver

stop, then maintain or restore slow, deep breathing. Breathe continuously and never, ever, hold my breath. Breathe slowly and deeply. Do not allow myself to get winded or out-of-breath

To start my ascent, I should...

swim up gently

The density of the air in the previous question would be ________ the density at the surface

three times

When descending with a reference, I would normally

use it as a visual reference only

To stay comfortably warm during a dive, I

wear an appropriate exposure suit

You should equalize before

you feel pain or discomfort