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Scuba > Final > Flashcards

Final Flashcards

1
Q

An object immersed in water will be buoy upward by a force ______ the weight of the water it displaces

A

equal to

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2
Q

Panic can be prevented by

  • taking special training
  • honestly evaluations your diving limitations
  • properly maintaining your total diving system
  • all the answers are correct
A

All the answers are correct

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3
Q

A scuba tank for recreational diving should be filled with

  • pure filtered compressed air or nitrox
  • mixture of helium and oxygen
  • pure oxygen
  • a mixture of hydrogen and oxygen
A

Pure filtered compressed air or nitrox

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4
Q

The most serious lung over expansion injury is

Subcutaneous emphysema
Arterial gas embolism
Mediastinal emphysema
Pneumothorax

A

Arterial gas embolism

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5
Q

The term surface interval is defined as

  • The amount of time the diver stays out of the water, or on the surface between dives
  • Travel time to and from the dive site
  • The amount of nitrogen expelled while on the surface
  • The amount of time spent on the surface of the water between dives(excludes time out of the water)
A

Amount of time for diverse stays out of the water, or on the surface between dives

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6
Q

Diving at altitude or flying after diving

  • Require special diving computer functions, altitude tables, and or reframing from flying at least 24 hours after the completion of a dive
  • Allows the diver to ignore the no decompression limits
  • Does not require any special considerations for the diver
  • Allows the diver to spend a greater amount of time at depth, without exceeding the no decompression limits
A

Requires special, diving computer, functions, altitude tables, and or reframing from flying from at least 24 hours after the completion of a dive

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7
Q

In and out of air emergency if your buddy is close enough, you should

  • perform an emergency buoyant ascent
  • Swim to your buddy give the out of air signal and share air
  • All answers are correct
  • Perform an emergency swimming ascent
A

your buddy give the out of air signal and Share air

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8
Q

Use of the my SSI logbook is important because

-It keeps an accurate record of your personal information and dives
- It is an important information resources for future dives.
- All answers are correct
- Did contained your medical history and provides important emergency information

A

All answers are correct

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9
Q

Which of the statements, considering sound transmission underwater is correct
- Sound travels four times faster underwater than in here
- Divers find it difficult to locate the direction of a sound producing source
- All answers are correct
- Sound will travel further underwater than air

A

All answers are correct

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10
Q

If a diver is injured by harmful sea, life, it is usually because of

The divers negligence
The divers aggressive behavior
All the answers are correct
The divers ignorance

A

All the answers are correct

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11
Q

If you lose contact with your buddy, you should

  • Exit the water at a predetermined location
  • Service immediately
    • Continue in the direction you’re swimming for one minute and then surface
  • Search for no more than a minute by turning 360° and looking up and down and then perform in normal assent to the surface
A
  • search for no more than a minute by turning 360 and looking up and down and then perform a normal asset to the service
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12
Q

Absolute pressure is defined as

  • The pressure of the surface + one bar
    All the answers are correct
    The total pressure exerted on an object
    The weight of the water that surrounds a diver
A

The total pressure exerted on an object

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13
Q

Overexpansion injuries can be prevented by

  • Learning the correct breathing pattern reinforced in classroom, pool and open water training
  • All the answers are correct
  • Die with her properly maintained high-quality total diving system
  • Never hold your breath while diving
A

All the answers are correct

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14
Q

The first symptoms of a sinus squeeze is usually

  • A crunching pain high in the chest
  • Sharp pain on wending sensation above the eyes
  • A sharp pain at the base of the neck
  • A dull pain with in the head
A

A sharp pain or wedging sensation above the eyes

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15
Q

Signs of a panicked diver are

  • A diver heading towards the surface before the scheduled end of the dive
  • Wide-eyed, fearful look and a fast erotic breathing pattern
  • Slow and erotic movement underwater
  • A diver giving the out of air sign one moving towards you
A

Wide eyed, fearful, look, and a fast and erotic reading pattern

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16
Q

During normal diving activities, diver should never exceed an ascent rate of —— meters per minute

20
Nine
30
18

A

9

17
Q

The greatest relative pressure change in water takes place between —- and —- meters

30/60
0/10
20/40
10/20

A

0/10

18
Q

The most efficient breathing pattern for scuba diving is

  • deep balanced inhalation, followed by a long balance, exhalation without any pause between inhaling and exhaling
  • Short, shallow breaths
  • Long slow inhalation, and faster exhalation
  • Rapid inhalation and exhalation cycles
A

Deep balanced, inhalation, followed by a long balance, exhalation without any pause between inhalation and exhalation

19
Q

The first thing you should do if you observe signs of panic in a diver of the surface is

  • Call for help
  • Drop your weight belt
  • Completely fill your BC and instruct a panic diver to establish positive buoyancy
  • Swim to the panic diver and try to drop the divers weight belt
A

Completely fill your BC and instruct the panic diver to establish positive buoyancy

20
Q

Diver should avoid contact with all corals because

  • All answers are correct
  • Touching corals can damage your equipment
  • Contact can damage the coral
  • Contact could be harmful to the diver
A

All answers are correct

21
Q

In air at one bar, the partial pressure of nitrogen is —-oxygen is—-

-0.8/0.4 bar.
0.79/0.21 bar
0.21/0.79 bar.
1.5/0.8 bar

A

0.79/0.21.

22
Q

The term no decompression limit is defined as

  • The maximum depth recorded during the dive
  • The maximum allowed time at death without having to perform a mandatory decompression stop during the ascent
  • The bottom time recorded during a dive
  • The maximum surface interval, allowed during a Days diving
A

The maximum allowed time at temps without having to perform a mandatory decompression stop during the ascent

23
Q

Underwater, the bending of light rays causes objects to appear to be

  • Closer
  • Add an angle consistent with the band of light
  • Further away
  • The same as the surface
A

Closer

24
Q

Causes of panic include

  • Diving outside a divers, comfort and ability
  • Answers are correct
  • Certain environmental conditions
  • Using equipment that is unfamiliar. It does not fit well.
A

All the answers are correct

25
Q

The buoyancy control system components are

  • buoyancy compensator, inflation, device, and weight belt or bc weight pockets
  • Buoyancy compensator and inflammation device
  • Regulator, inflation, device, and weight belt or BC. Wait pockets.
    -Buoyancy, compensator, exposure, soot, and inflation device
A

Buoyancy, compensator, inflation, device, and weight belt or PC wait pockets

26
Q

If you experience pain in the ear during the descent

  • Stop the descent and ascent until the pain stops
  • Play sitting here in the ear canal and gently massage the year until the pain Caeses
  • Continue the descent while gently exhaling into the mask
  • Abort the dive
A

Stop the descent, and ascend until the pain stops

27
Q

The proper first aid for arterial gas, embolism, subcutaneous, emphysema, pneumothorax and mediastinal emphysema is

  • All answers are correct
  • seek proper first aid (recompression chamber) as quickly as possible
  • Administer oxygen
  • Watch vital signs treat for shock and standby to administer cardio pulmonary resuscitation
A

All answers are correct

28
Q

SSI responsible Diver code states that you should

  • be environmentally responsible on every dive
  • accept responsibility for your own well being on every dive
  • all answers are correct
  • dice within the limits of your training and ability
A

All answers are correct

29
Q

To use a compass to navigate to a sighed object

  • point the magnetic needle toward the object and swim
  • point the compress toward the object rotate the bezel until the witness marks are over the magnetic needle and follow the lubber line
  • point the witness marks toward the object and swim
  • point the lubber line toward the toward the object and swim
  • point the lubber line toward the object and swim
A

Point the compass toward the object rotate the bezel until the witness marks over the magnetic needle and follow the lubber line

30
Q

Sinus squeeze can be prevented by

  • the valsava technique
  • tilting the divers head back and forth
  • wearing earplugs
  • not diving in the cold
A

Not diving with a cold

31
Q

A dive computer keeps track of a divers nitrogen absorption levels so that the diver can

  • dive deeper than 30 meters
  • make decompression dives
  • avoid arterial gas embolism
  • stay within the no decomposition limits on each dive
A

Stay within the no decompression limits on each dive

32
Q

Under the ssi equipment service program your delivery system should be serviced and performance checked

Every year

A

Every year

33
Q

Divers can help protect the marine environment by

  • maintaining neutral buoyancy at all times
  • always being a responsible diver
  • all answers are correct
  • keep equipment secured and no dangling
A

All answers are correct

34
Q

Residual nitrogen is defined as

  • the amount of excessive nitrogen dissolved in our blood stream and tissues at the beginning of the initial ascent to the surface
  • the amount of excessive nitrogen dissolved in our blood stream and tissues
  • the amount of nitrogen dissolved in our blood stream and tissues at the beginning of the first dive
  • 80% of the gas we breathe
A

The amount of excessive nitrogen dissolved in our blood stream and tissues after a dive

35
Q

Salts water weighs ___ kg per liter and freshwater weighs ___ kg per liter

  • 14.7/14.3
  • 1.0/1.025
  • they both weigh the same
  • 1.025/1.0
A

1.025/1.0

36
Q

Dive computers are essential for flanking and executing dives because they

  • all answers are correct
  • help divers stay within the no decomposition limits
  • record all pertinent information
  • monitor ascents and descents
A

All answers are correct

37
Q

A good diving buddy

  • all answers are correct
A

All answers are correct

38
Q

Gauge pressure is defined as

  • absolute pressure minus 1 bar
  • the pressure at the surface
  • the depth reading on a gauge
  • hydrostatic pressure minus 1 bar
A

Absolute pressure minus 1 bar

Scuba (1 decks)

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