Scuba diving certification

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

1 bar/ata

As a newly PADI Open Water Diver, I will be trained to dive with a buddy as deep as

18 metres/60 feet

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

2 litres

Identify the following components

A=alternate air source B= SPG/computer C=first stage D= low pressure inflator E=primary second stage

Identify the four systems that make up a scuba kit

A=regulator B=cylinder C=weight system D=BCD

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

BCD

Which of the following are among the breathing rules I follow as a diver?

Breathe continuously and never, ever, hold my breath, Breathe slowly and deeply, Do not allow myself to get winded or out-of-breath

There's no real benefit to choosing the components of my scuba kit as an integrated package

False Although the components are generally interchangeable choosing your scuba kit as a package helps you best meet your preferences

My local dive pro will usually set up my regulator components

False Your SPG may be an independent instrument or it may be integrated into your dive computer

From among masks that fit me I should choose a mask that fits as far away from my face as possible

False choose a low profile that sits as close to you face as possible

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 to answer all questions on the Medical Statement honestly and completey

True

Failure to complete assigned independent study can create siginificant 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 severe lung overexpansion 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

Getting the service my gear needs may be a consideration when choosing equipment

True

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

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 body responds to anxiety with increased breathing but slow breathing helps reduce

True

Regulators need periodic overhauls typically every year to two years

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 no in use

True

The LPI mechanism inflates the BCD with air from my scuba cylinder

True

To prepare adjustable fins I should adjust the straps wearing my wet suit boots

True

When diving in a new dive environment, two benefits of seeking an orientation, supervision and/ or additional training are that it helps me aviod problems and that it helps me enjoy the dive more

True

When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure

True

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

Yes

A squeeze is caused by

a pressure imbalance between the surrounding pressure and an air space

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

I should equalize

before I feel pain or discomfort

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

The most important rule in scuba diving is to

breathe continuously and never hold your breath

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

burst

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

cancel the dive until I'm well

The three most important considerations in choosing scuba equipment are suitability fit and _______

comfort

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

The most important consideration when choosing a regulator is

ease of breathing

My mask encloses my nose so I can

equalize my mask

Salt water causes more buoyancy than fresh water because it is less dense and weighs less

false Salt water causes more buoyancy because it is more dense and weighs more; buoyancy results from the weight of the water displaced

My buddy and I descend to 12 metres/40 feet. I would expect to use my air _______ at 6 metres/20 feet

faster than

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

Before each use I should ________ my equipment

inspect

As I descend, increasing pressure affects my

mask, ears, sinuses

PADI courses are perfomance-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

When my snorkel is in my mouth the tip should be

over the crown of my head

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

When setting up wearing my kit the alternate air source

secure in the triangle formed by my hips and chin

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

During ascent I feel discomfort in my ears. I should

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

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

three times