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Scuba Diving > Section 4 > Flashcards

Section 4 Flashcards

1
Q

for an underwater naturalist dive, I want to carry several small slates and some measuring tools. a mesh utility bag may be an appropriate way to do this
true/false

A

true

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2
Q

mesh bags range in size and options. I would probably choose a larger one for carrying a wet exposure suit
true/false

A

true

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3
Q

during an underwater cleanup, my buddy and I fill a large mesh utility bag with several kilograms/pounds of garbage. we should

a. attach the bag to our gear
b. carry the bag in our hands

A

b. carry the bag in our hands

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4
Q

which of the following are purposes for which I would carry a slate or wet book? (choose all that apply)

a. communication
b. noting limits and backup information
c. recording information
d. the unexpected

A

all of them

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5
Q

when choosing a slate, the main option I usually consider is

a. weight
b. size
c. color
d. pencil type

A

b. size

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6
Q

one use of a dive light is to look into holes and cracks where shy organisms may hide during the day
true/false

A

true

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7
Q

wide beams of light tend to be ____ dive lights

a. compact
b. larger
c. rechargeable battery
d. disposable battery

A

b larger

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8
Q

I log my dives (choose all that apply)

a. to document training
b. as a reference tool
c. to share information
d. keep related information

A

all of them

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9
Q

the minimum information I would typically log includes (choose all that apply)

a. dive site name
b. the depth
c. dive time
d. my buddy’s name

A

all of them

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10
Q

dive planning software can help me estimate and plan (choose all that apply)

a. my air use
b. computer dive time
c. the water temperature

A

a, b

my air use, computer dive time

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11
Q

I can choose from very basic software intended only for planning recreational dives, as well as software designed for much more complex diving
true/false

A

true

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12
Q

a spare parts kit contains

a. user-replaceable items
b. parts that require professional installation

A

a. user-replaceable items

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13
Q

which of the following might I have in a spare parts kit? (choose all that apply)

a. spare mask strap, fin straps
b. harness/weight belt buckle
c. cable (pull) ties
d. adjustable wrench (spanner), pliers, screw drivers, hex wrenches (allen keys)
e. regulator mouthpiece
f. accessory clip
g. various sized cylinder valve/DIN valve o-rings

A

all of them

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14
Q

diving can be physical demanding, s I should be in god health and reasonably fit
true/false

A

true

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15
Q

it is recommended that I have a complete physical examination when I start diving and regularly thereafter
true/false

A

true

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16
Q

factors that can strain my heart in diving include (choose all that apply)

a. swimming hard
b. carrying equipment
c. climbing a ladder
d. heat stress

A

all of them

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17
Q

if I may be predisposed to heart disease, I should consult my doctor so I can assess and manage the risk as a diver
true/false

A

true

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18
Q

before diving, I should refrain using ____ and ____. (choose two)

a. alcohol
b. prescription drugs
c. seasickness medication
d. tobacco

A

a, d

alcohol, tobacco

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19
Q

before using prescribed or over-the-counter medication, if I am not sure how they will affect me diving, I should consult my physician
true/false

A

true

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20
Q

the best way to keep my dive knowledge and skills current and refreshed is to

a. visit online scuba forums
b. join a dive club
c. use them by diving regularly

A

c. use them by diving regularly

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21
Q

as a new PADI Open Water Diver, I should refresh my dive skills with a PADI ReActivate after ____ of inactivity

a. one month
b. six months
c. one year
d. five years

A

b. six months

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22
Q

continuing my diver education helps keep my skills and knowledge sharp by (choose all that apply)

a. allowing me to visit new dive sites
b. increasing my opportunities to dive
c. expanding the types of diving I do
d. introducing me to new buddies I can dive with

A

all of them

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23
Q

for practical purposes, air consists of oxygen and

a. helium
b. hydrogen
c. argon
d. nitrogen

A

d. nitrogen

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24
Q

for practical purposes, air is ____ percent oxygen

a. 11
b. 21
c. 51
d. 100

A

b. 21

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25
Q

which of the following issues relate to the component gases of air? (choose all that apply)

a. equalization
b. lung overexpansion
c. buoyancy changes with depth
d. oxygen issues

A

d. oxygen issues

26
Q

if I dive within recreational limits using air, I avoid the problems associated with oxygen being toxic or causing fire/combustion issues
true/false

A

true

27
Q

as a PADI Open Water Diver, I should not dive with a cylinder labeled “oxygen” or known to have 100 percent oxygen
true/false

A

true

28
Q

enriched air nitrox can have oxygen issues. to avoid these, I should become qualified to dive with enriched air in the PADI Enriched Air Diver course, or be under the supervision of a PADI Enriched Air Instructor
true/false

A

true

29
Q

possible causes of contaminated air in my scuba cylinder include high levels of contaminant in the source gas and

a. chemical reactions in the cylinder
b. using the wrong type of cylinder
c. increasing the amount of oxygen
d. getting it filled at an improper source

A

d. getting it filled at an improper source

30
Q

during a dive, I begin to have a headache, feel ill and dizzy. are these possible symptoms of contaminated air?
yes or no

A

yes

31
Q

after a dive, my buddy feels ill and has cherry red lips and nail beds. after breathing oxygen, my buddy seems to be doing fine, so n other action is required
true/false

A

false

the diver should have medical attention in all cases of suspected contaminated air

32
Q

to avoid contaminated air, I should have my cylinder filled only at reputable scuba air sources
true/false

A

true

33
Q

the two primary factors that influence how much nitrogen dissolves into my body tissues during a dive are ____ and ____

a. depth, time
b. temperature, time
c. depth, temperature

A

a. depth, time

34
Q

if I exceed established depth and time limits while diving and then surface, bubbles can form in my body tissues, causing decompression sickness
true/false

A

true

35
Q

after a dive, a diver has numbness, tingling and weakness in the arms. are these possible signs/symptoms of DCS?
yes or no

A

yes

36
Q

secondary factors thought to contribute to DCS include (choose all that apply)

a. age
b. cold
c. injuries
d. poor fitness/high body fat

A

all of them

37
Q

dive computers track the amount of theoretical nitrogen in my body by measuring the depth and time throughout the dive
true/false

A

true

38
Q

during a dive, my dive computer reads the nitrogen that is actually absorbed by my body
true/false

A

false

dive computers and tables do not directly access anything going on inside your body

39
Q

because dive computers and tables cannot account for individual variation, I should dive well within limits and

a. ascend rapidly
b. ascend slowly
c. descend rapidly
d. descend slowly

A

b. ascend slowly

ascend slowly to equalize but this does not reduce your DCS risk

40
Q

A no stop dive means I can, if necessary, ascend directly to the surface without stopping ____ the dive
A. For the first half of
B. For the last half of
C. At any time during

A

C. At any time during

41
Q

A no stop limit is the maximum time I can spend at a given depth and still ascend directly to the surface
True/false

A

True

42
Q

If I stay longer than a no stop limit, I must
A. Ascend directly to the surface
B. Make a safety stop
C. Make an emergency decompression stop

A

C. Make an emergency decompression stop

43
Q

If I am planning a dive to 18 m/60 ft, my no stop limits will be ____ than my no stop limits for a dive to 12m/40 ft
A. Longer
B. Shorter

A

B. Shorter

44
Q

While at 18 m/60 ft, my computer says I have 40 minutes no stop time remaining. My buddy and I ascend to 10 m/30 ft. Our computers will show our no stop time is
A. Longer
B. Shorter
C. The same

A

A. Longer

45
Q

Ascending faster than the required ascent rage of my computer or table may increase my risk of DCS
True/false

A

True

46
Q

If I were to skip a(n) ____ stop, I would surface outside model limits and have a high risk of decompression sickness
A. Safety
B. Emergency decompression

A

B. Emergency decompression

47
Q

A repetitive dive is a dive made while I still have theoretical residual nitrogen in my body
True/ false

A

True

48
Q

On a repetitive dive, for a known depth my no stop limits will be ____ those of the first dive
A. Longer than
B. Shorter than
C. The same as

A

B. Shorter than

49
Q

A surface interval is the time it takes to reach the surface

True/false

A

False

A surface interval is the time you are at the surface between dives

50
Q

After a surface interval, the nitrogen dissolved in my body will
A. Decline
B. Increase
C. Not change

A

A. Decline

51
Q

My dive computer only calculated while I am underwater. It doesn’t do anything between dives
True/false

A

False

Your dive computer continues to calculate until your theoretical nitrogen levels return to normal

52
Q

I must use the same dive computer the entire day of diving, on all dives, and not share it with another diver
True/false

A

True

53
Q 
Dive tables like the RDP and the eRDPml use \_\_\_\_ tables to calculate repetitive dives
A. 1
B. 2
C. 3
D. 4
A

C. 3

54
Q 
Advantages of a dive computer over dive table include dive computers (choose all that apply)
A. Are easier to use than tables
B. Help offset human error
C. Give me more time underwater
D. Read the actual nitrogen in my body
A

A, B, C

55
Q 
Before, during and/or between dives, my computer will tell me (choose all that apply)
A. No stop limits
B. The ascent rate
C. Emergency decompression information
D. Previous dive information
A

All of them

56
Q 
The first step in setting up my dive computer is to
A. Set the date
B. Put in the battery
C. Press the power button
D. Read the manufacturer instructions
A

D. Read the manufacturer instructions

57
Q

During a dive with my dive computer, my buddy and I will turn the dive based on the first limit we reach: remaining no stop time or air supply turn point
True/false

A

True

58
Q

During a dive, my dive computer allows more dive time than my buddy and I planned for a given depth. We have plenty of air, so it’s okay to stay longer or go deeper than we planned
True/false

A

False

Don’t exceed your planned depth or time just because your computer will let you

59
Q

During a dive, my dive computer fails and I am not using a backup. I should
A. Continue the dive based on my buddy’s computer
B. Ascend, make a safety stop and end the dive
C. Stay for the time we planned before the dive

A

B. Ascend, make a safety stop and end the dive

60
Q

Are divers a significant threat to the overall health of the underwater environment?
Yes or no

A

No

61
Q

One reason t is important to apply environmentally friendly dive skills is to preserve the natural beauty for other divers
True/false

A

True

62
Q

My influence as a diver and ambassador for the underwater world allows me to be part of the solution to the problems the world’s aquatic ecosystems face
True/false

A

True

Scuba Diving (11 decks)

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