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