Scuba Final

Water's density works best for me when I use the skill of ______. A. shallow, rapid breathing B. clearing water from my mask C. equalizing my ears, sinuses and mask D. controlling my buoyancy

D. controlling my buoyancy

My SPG is always part of my dive computer. True or false?

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

It is important to master buoyancy control because it affects almost everything I do in and underwater. True or false?

True

A depth change of 10 meters/33 feet causes a pressure change of ______. A. 1 bar/ata B. 2 bar/ata C. 3 bar/ata D. 4 bar/ata

A. 1 bar/ata

Equalization is the process of _______. A. Adding air to an air space B. Removing air from an air space C. Reducing the surrounding pressure D. Increasing the surrounding pressure

A. Adding air to an air space

My primary considerations while choosing fins are fit and: A. Blade size B. Material C. Splits D. Vents

A. Blade size

My mask encloses my nose so I can _______. A. Equalize the mask B. Suck the mask into place

A. Equalize the mask

As you descend in water the pressure A. Increases B. Decreases C. Does not change

A. Increases

Before each use, I should ________ my equipment. A. Inspect B. Wash C. Warm D. Dry

A. Inspect

As I ascend, increasing pressure affects my (choose all that apply): A. Mask B. Ears C. Sinuses D. Skin

A. Mask B. Ears C. Sinuses

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. A. Positively B. Negatively C. Neutrally

A. Positively

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? A. Yes B. No

B. No. Not until you are a PADI Open Water Diver and a PADI Enriched Air Diver

I should equalize _______. A. When I feel pain or discomfort B. Only if I can't tolerate the pain or discomfort C. Before I feel pain or discomfort D. When I reach the bottom

C. Before I feel pain or discomfort

On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I should _______ A. Take an approved decongestant so I will be able to equalize B. Plan to take a lot longer as I descend C. Cancel the dive until I'm well

C. Cancel the dive until I'm well

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

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

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. Choose a low profile that sits as close to your face as possible

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

True

Buoyancy is a force that pushes an object in water upward. True or false?

True

Certain medical conditions can be hazardous while diving, so it's important to answer all the questions on the Medical Statement honestly and completely. True or false?

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 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

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 tow years. True or false?

True

The LPI mechanism inflates the BCD with air from my scuba cylinder. 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 or no?

Yes

Scuba cylinders require pressure testing _______ and visual inspection _________. A. annually, annually B. annually, every 2-5 years C. every 2-5 years, annually D. every 2-5 years, every 2-5 years

5. C. every 2-5 years, annually

PADI courses are performance based. This means that to be certified, I must ______. A. Meet specific performance requirements B. Spend a given number of hours in training C. Simply pay for the course

A. Meet specific performance requirements

Trim means having the right ______ of weight. A. distribution B. amount C. shape

A. distribution

The most important consideration when choosing a regulator is _______. A. ease of breathing B. color C. dive/predive switch D. adjustable second stage

A. ease of breathing

Underwater objects appear ______. A. larger and/or closer B. smaller and/or more distant C. the same as they do in air

A. larger and/or closer

Trim is important for streamlining because _______. A. poor trim raises or lowers my feet, causing drag B. it means I have the correct amount of weight

A. poor trim raises or lowers my feet, causing drag B. is incorrect because you can have poor trim with the correct amount of weight

Overall benefits of the buddy system include (choose all that apply): A. Practicality B. Safety C. Fun

All of the above

Which of the following are among the breathing rules I follow as a diver? (Choose all that apply): A. Breathe continuously and never, ever, hold my breath B. Breathe slowly and deeply C. Do not allow myself to get winded or out of breath D. If faced with a problem, stop, then maintain or restore slow, deep breathing

All of the above

As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as _________. A. 10 meters/30 feet B. 18 meters/60 feet C. 30 meters/100 feet D. 40 meters/130 feet

B. 18 meters/60 feet

if you take 6 liters of air from the surface to 20 meters/66 feet, the volume will be ______ liters. A. 1 B. 2 C. 3 D. 4

B. 2

A squeeze is caused by ______. A. Wearing my wet suit or other gear too tightly B. A pressure imbalance between the surrounding pressure and an air space

B. A pressure imbalance between the surrounding pressure and air space

The most important rule in scuba diving is to ______. A. Always dive with a buddy b. Breathe continuously and never hold your breath C. Check your air supply every five minutes

B. Breathe continuously and never hold your breath

A balloon fully inflated and sealed at 10 meters/33 feet, would probably ______ during ascent to the surface. A. Shrink (become smaller) B. Burst

B. Burst

While my buddy and I are diving, a motorboat passes by about 300 meters/yards away. Which of the following statements is true? A. It will sound farther away (quieter) than in air B. I may have difficulty determining where the boat is based on the sound. C. It will sound like it is straight below me.

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

Underwater, when I inhale, my buoyancy ______. A. Decreases slightly B. Increases slightly C. Doesn't change

B. Increases slightly

I need a mask because _______. A. I will inhale water without it B. My eyes must be in air to focus

B. My eyes must be in air to focus

When my snorkel is in my mouth, the tip should be ______. A. Above my forehead B. Over the crown of my head C. At the base of my skull

B. Over the crown of my head

I'm descending and discover I can't equalize. The first thing I would do is _______. A. Equalize more forcefully B. Stop my descent and signal my buddy/the instructor C. Slow my descent and see if the problem corrects itself

B. Stop my descent and signal my buddy/the instructor

During ascent I feel discomfort in my ears. I should ________. A. Continue my ascent at a slightly faster rate B. Stop, descend slightly and allow for trapped air to work its way out C. Use a decongestant before my next dive D. Equalize by blowing gently against blocked nostrils

B. Stop, descend slightly and allow for trapped air to work its way out

The _______ is a safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail. A. DIN valve B. burst disk C. cylinder alloy

B. burst disk

Accessory weights ______. A. must have quick releases B. can help you adjust your trim C. require special training

B. can help you adjust your trims

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 meters/40 feet I would expect the patch to appear ________. A. a more vivid red B. less red than at the surface C. blue

B. less red than at the surface

The most important feature in my weight system is its _______. A. comfort B. quick release C. size D. trim

B. quick release

When setting up and wearing my kit, the alternate air source A. dangles on either side B. secures in the triangle formed by my hips and chin C. goes in a pocket on my left D. goes in a pocket on my right

B. secures in the triangle formed by my hips and chin

My BCD should fit _____. A. very tightly and restrict breathing when fully inflated B. snugly but not restrict breathing when fully inflated

B. snugly but not restrict breathing when fully inflated

I want to adjust my mask so the strap rests ______. A. Below my ears, above the neck B. Over my ears, below the crown of my head C. Above my ears, over the crown of my head

C. Above my ears, over the crown of my head

When I descend, my buoyancy tends to ________. When I ascend, it tends to _______. A. Increase, increase B. Increase, decrease C. Decrease, increase D. Decrease, decrease

C. Decrease, increase

The most efficient way to breathe dense air underwater is to breathe ________. A. Shallowly and slowly B. Shallowly and rapidly C. Deeply and slowly D. Deeply and rapidly

C. Deeply and slowly

My buddy and I descend to 12 meters/40 feet. I would expect to use my air _______ at 6 meters/20 feet. A. Slower than B. At the same rate as C. Faster than

C. Faster than

When choosing an alternate air source, a primary consideration includes deciding _______. A. whether to let it dangle B. where to secure it C. between independence and simplicity D. whether you really need one

C. between independence and simplicity

To move efficiently as a diver, I should move _______. A. quickly and steadily B. quickly and sporadically C. slowly and steadily D. slowly and sporadically

C. slowly and steadily

The density of the air in the previous question would be ______ the density at the surface. A. one-third B. one-half C. three times D. four times

C. three times

The two basic fin styles are ______ fins. A. Large blade and small blade B. Freshwater and marine C. Vented and split D. Adjustable and full-foot

D. Adjustable and full-foot

To control my buoyancy, normally I will use my weight system and my ______. A. Fins B. Scuba cylinder C. Wet suit D. BCD

D. BCD

The three most important considerations in choosing scuba equipment are suitability, fit and ________. A. Cost and features B. Color and style C. Manufacturer D. Comfort

D. Comfort

I should have my scuba cylinder filled ________. A. from any compressed air source B. with pure oxygen C. with pure nitrogen D. only by reputable scuba air stations

D. only by reputable scuba air stations

Salt water causes more buoyancy than fresh water because it is less dense and weighs less. True or false?

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

A cylinder with a higher working pressure always holds more air than a cylinder with a lower working pressure. True or false?

False. A cylinder's capacity depends upon both its working pressure and its internal capacity.

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 of 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 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

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 to reduce anxiety. 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

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