Open Water Flashcards
1
Q
As a newly certified PADI Open Water Diver, you are trained to dive with a buddy as deep as _________.
A
18 meters / 60 feet
2
Q
(True or False)
Certain medical conditions can be hazardous while diving, so it is important to answer all questions on the Medical Statement honestly and completely.
A
True
3
Q
PADI courses are performance-based. This means that to be certified, you must:
A
Meet specific performance requirements
4
Q
(True or False)
Failure to complete assigned independent study can create significant delays, and the instructor may have to cancel and reschedule sessions until the assignment is completed.
A
True
5
Q
(True or False)
When diving in a new dive environment, two benefits of seeking an orientation, supervision and/or additional training are that it helps you avoid problems and that it helps you enjoy the dive more.
A
True
6
Q
As you descend in water, the pressure ___________.
A
Increases,
7
Q
A depth change of 10 meters / 33 feet causes a pressure change of _________ bar / ata
A
1
8
Q
If you take 6 liters of air from the surface to 20 meters / 66 feet, the volume will be ________ liters.
A
2
9
Q
The density of the air in the previous question would be ______ the density at the surface.
A
Three times
10
Q
A balloon fully inflated and sealed at 10 meters / 33 feet, would probably _____ during ascent to the surface.
A
Burst
11
Q
As you descend, increasing pressure affects your ______.
A
Mask, sinuses, and ears
12
Q
A squeeze is caused by ______.
A
A pressure imbalance between the surrounding pressure and an air space.
13
Q
Equalization is the process of ______.
A
Adding air to an airspace.
14
Q
You should equalize _____.
A
Before you feel pain or discomfort.
15
Q
You’re descending and discover you can’t equalize. The first thing you would do is ______.
A
Stop your descent and signal your buddy / the instructor.
16
Q
(True or False)
You equalize gently because an extended, forceful equalization can cause permanent damage to your ears and hearing.
A
True.
17
Q
On a day you plan to go diving, you wake up with your sinuses blocked due to a cold or allergy, You should _______.
A
Cancel the dive until you’re well.
18
Q
(True or False)
When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure.
A
True
19
Q
The most important rule in scuba diving is _____.
A
Breathe continuously and never hold your breath.
20
Q
(True or False)
Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death.
A
True.
21
Q
During ascent, you feel discomfort in your ears. You should ______.
A
Stop, descend slightly and allow trapped air to work its way out.
22
Q
Your buddy and you descend to 12 meters / 40 feet. You would expect to use your air ______ than at 6 meters / 20 feet.
A
Faster.
23
Q
The most efficient way to breathe dense air underwater is to breathe _____.
A
Deeply and slowly.
24
Q
(True or False)
Your body responds to anxiety with increased breathing, but slow breathing helps reduce anxiety.
A
True.
25
Four breathing rules are: ______.
1) Breathe continuously and never, ever hold your breath.
2) Breath slowly and deeply.
3) Do not allow yourself to get winded or out-of-breath.
4) If faced with a problem, stop, then maintain or restore slow, deep breathing.
26
(True or False)
| Buoyancy is a force that pushes an object in water upward.
True.
27
Your sunglasses case falls out of your pocket into the water, but fortunately, it floats so you retrieve it. You would say your sunglasses case is _____ buoyant.
Positively.
28
(True or False)
| 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.
29
To control your buoyancy, you will use your weight system and your _______.
BCD.
30
When you descend, your buoyancy tends to _____. When you ascend, your buoyancy tends to _____.
Decrease, Increase
31
Underwater, when you inhale, your buoyancy ______.
Increases slightly.
32
(True or False)
| It is important to master buoyancy control because it affects almost everything you do in and underwater.
True.
33
(True or False)
In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits.
True.
34
Overall benefits of the buddy system include ______.
Practicality, safety, and fun.
35
The three most important considerations in choosing scuba equipment are suitability, fit, and ______.
Comfort.
36
(True or False)
| Getting the service your gear needs may be a consideration when choosing equipment.
True.
37
Before each use, you should ______ your equipment.
Inspect
38
You need a mask because _____.
Your eyes must be in air to focus.
39
Your mask encloses your nose so you can ______.
Equalize the mask.
40
(True or False)
| From among masks that fit, you should choose a mask that fits as far away from your face as possible.
False. Choose a low profile that sits as close to your face as possible.
41
PADI
Professional Association of Diving Instructors
42
ACE
American Council on Education
43
BCD
Buoyancy Control Device
44
You want to adjust your mask so the strap rests ______.
Above your ears, over the crown of your head.
45
(True or False)
Snorkels are standard equipment for scuba diving because they allow you to breathe with your face in the water, or in rough conditions, without wasting your scuba air, especially when you have little scuba air remaining.
True
46
(True or False)
| Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use.
True.
47
When your snorkel is in your mouth, the tip should be _______.
Over the crown of your head.
48
(True or False)
| Fins provide a large surface area so your legs can push against the water effectively.
True
49
The two basic fin styles are _____.
Adjustable and full-foot
50
Your primary considerations when choosing fins are fit and _____.
Blade size
51
(True or False)
| To prepare adjustable fins, you should adjust the straps wearing your wet suit boots.
True.
52
What are the four systems that make up a scuba kit?
1) BCD
2) Weight system
3) Cylinder
4) Regulator
53
(True or False)
| There’s no real benefit to choosing the components of your 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.
54
LPI
Low Pressure Inflator
55
(True or False)
| The LPI mechanism inflates the BCD with air from your scuba cylinder.
True
56
(True or False)
| Your BCD should have adequate capacity to easily float your equipment and you at the surface.
True.
57
Your BCD should fit _____.
snugly but not restrict breathing when fully inflated.
58
(Yes or No)
| Your buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care?
Yes
59
SPG
Submersible Pressure Gauge
60
What are the five components of a regulator?
1) First Stage
2) Primary second stage
3) Alternate air source
4) SPG / computer
5) Low pressure inflator hose
61
The most important consideration when choosing a regulator is _____.
Ease of breathing.
62
When choosing an alternate air source, a primary consideration involves deciding ______.
Between independence and simplicity.
63
(True or False)
| The SPG is always part of the dive computer.
False. The SPG May be an independent instrument, or it may be integrated into your dive computer.
64
(True or False)
| The local dive pro will usually set up your regulator components.
True.
65
When setting up and wearing your kit, the alternate air source ______.
Should be secured in the triangle formed by your hips and chin.
66
(True or False)
| Regulators need periodic overhauls, typically every year or two.
True.
67
EANx
Enriched Air Nitrox
68
The _____ is a safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail.
Burst disk
69
(True or False)
| A cylinder with a higher working pressure always holds more air than a cylinder with a lower working pressure.
False. A cylinder’s capacity depends on both it’s working pressure and it’s internal capacity.
70
(Yes or No)
You're 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, are you qualified to use one of these cylinders?
No, until you are a PADI Open Water Diver and a PADI Enriched Air Diver.
71
You 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.
73
You should have your scuba cylinder filled ______.
Only by reputable scuba air stations.
74
Scuba cylinders require pressure testing every _____ and visual inspection ______.
2-5 years, annually
75
The most important feature in a weight system is its _______.
Quick release.
76
(True or False)
| You must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight.
True.
77
Trim means having the right ______ of weight.
Distribution.
78
(True or False)
| One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one.
True.
79
Accessory weights ______.
Can help you adjust your trim.
80
0m / 0ft
Pressure?
Volume?
Density?
```
Pressure = 1bar / ata
Volume = 1
Density = x1
```
81
As you ascend, you need to equalize your air spaces. What are acceptable ways of equalizing your ears?
1) Block your nose and attempt to gently blow through it.
| 2) Swallow and wiggle the jaw from side to side.
82
10m / 33ft
Pressure?
Volume?
Density?
```
Pressure = 2bar / ata
Volume = 1/2
Density = x2
```
83
30m / 99ft
Pressure?
Volume?
Density?
```
Pressure = 4 bar / ata
Volume = 1/4
Density= x4
```
84
You should equalize ______.
Early and often, before you feel discomfort.
85
40m / 132ft
Pressure?
Volume?
Density?
```
Pressure = 5 bar / ata
Volume = 1/5
Density = x5
```
86
During a descent, you try to equalize but discover you are having trouble doing so. What should you do?
Stop your descent
Signal your buddy
Ascend slightly
Try to equalize again
87
(True or False)
| You should not dive with a cold, nor use medications to dive with a cold.
True.
88
(True or False)
Failure to follow the most important rule in scuba diving can cause serious lung overexpansion (lung rupture) injuries, which in turn can cause paralysis and death.
True.
89
The most important rule in scuba diving is ______.
Breathe continuously and never hold your breath.
90
Your buddy and you are planning a dive to 18 meters / 60 feet. We would expect our air supply to last _____ of at 10 meters /33 feet, all else being the same.
shorter than that
91
If you 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.
92
During a dive, you swim hard enough to keep up with a fish that interests you, but shortly begin to feel like you can't get enough air. The correct action would be to _____.
Stop all activity and rest to restore proper deep, slow breathing.
93
An object that is neutrally buoyant in fresh water will _____ in salt water.
Float.
94
You're planning to dive the following week and are checking your gear. You put your kit together and notice that your regulator seems to breathe harder then you remember. The appropriate action would be to _____.
Have it inspected and serviced as needed by a professional before using it.
95
(True or False)
| The three overall benefits of the buddy system are practicality, safety, and fun.
True.
96
(True or False)
It is important to master buoyancy control because it allows you to control whether you descend, float, or are neutrally buoyant. You adjust your buoyancy frequently while diving.
True.
97
The primary considerations when choosing any piece of scuba gear are _____.
Suitability, fit, and comfort.
98
(True or False)
| There is no way to use a DIN regulator on a yoke cylinder valve.
True.
99
Underwater objects appear ______.
larger and / or closer.
100
Your buddy has a bright red shoulder patch on his wet suit. If you're diving together in very clear water on a sunny day, at 12 meters / 40 feet you would expect the patch to appear ____.
Less red than at the surface.
101
While your buddy and you are diving, a motorboat passes by about 300 meters / yards away. How does the motorboat sound?
You may have difficulty determining where the boat is based on the sound.
102
(True or False)
| Because water is denser then air, it takes more effort to move through water.
True.
103
To move efficiently as a diver, you should move _____.
Slowly and steadily.
104
(True or False)
| Streamlining benefits you as a diver because it reduces drag, which helps you save energy.
True.
105
Water's density works best for you when you use the skill of _____.
controlling your buoyancy.
106
Trim is important for streamlining because _____.
poor trim raises or lowers your feet, causing drag. Note: you can still have poor trim even with the correct amount of weight.
107
(True or False)
| You chill faster in water than in air of the same temperature because water absorbs more heat than air does.
True.
108
To stay comfortably warm during a dive, you should ______.
wear an appropriate exposure suit.
109
While diving, you start to feel cool and shortly begin to shiver uncontrollably. You should _____.
End the dive immediately, dry off and seek warmth.
110
One method of airway control is to inhale slowly. You can also ______ to help breathe past small amounts of water in your regulator.
Raise your tongue.
111
While scuba diving, you should breathe _____.
Slowly and deeply.
112
After 30 minutes underwater, you start to feel a bit too cool and uncomfortable. You should ______.
End the dive.
113
(True or False)
If you're tired, have labored breathing and feel air-starved and anxious during a dive, it is likely you are experiencing overexertion.
True.
114
Overexertion results from ______.
a prolonged increased effort.
115
BWRAF
Predive Safety Check
(Begin With Review And Friend)
B- BCD
W- Weight
R- Releases
A- Air
F- Final Check
116
If you think you're overexerting while underwater, you should stop, signal your buddy, and _____.
Rest.
117
(True or False)
You and your buddies are planning a dive. Among other things, you should address how to enter and exit the water, the maximum depth and time, when to turn the dive, and what to do if we get separated.
True.
118
(True or False)
| As you and your buddy kit up, the normal practice is to be entirely independent. Helping each other is discouraged.
False. Buddies normally help each other. How much you assist each other depends on the situation.
119
If you and your buddy get separated, the general procedure is to ______.
Look for each other for no more than a minute, then reunite on the surface.
120
The buddy system is ______ responsibility.
Your.
121
You and your buddy are planning a boat dive with the same type cylinders filled to 200bar / 3000psi. Due to conditions, you are planning very conservatively. You agree on 60bar / 800psi for our reserve. You agree that we also want an additional 30bar / 500psi for our ascent and safety stop. This means you should begin your ascent when either of your SPG reads _______.
90bar / 1300psi
122
(True or False)
At the surface, it's a good habit to keep your mask on and your snorkel or regulator in our mouth because it helps you deal with difficulties more effectively.
True.
123
You and your buddies plan to enter the water but swim on the surface to a descent point about 50 meters / yards away. A primary reason we will do this is because ______.
It saves your cylinder air for the dive.
124
To stay with your buddy while surface swimming, generally it works well to swim ______.
Side by side.
125
(True or False)
You are descending in open water with your buddies. After confirming they are ready, the next step is to signal "descend" and slowly deflate your BCD.
False. You:
1) Orient yourself,
2) Wwitch to your regulator
3) Check your dive computer or timing device
4) Deflate your BCD.
126
For the 50 meter / yard swim, you and your buddies will swim ______ because it is less tiring.
On your backs.
127
When descending with a reference, you would normally _____.
Use it as a visual reference only.
128
Your buddy and you have just started your descent. You begin equalizing _____.
Immediately, as soon as your head goes underwater.
129
As you descend while wearing a wetsuit, your buoyancy will tend to _____.
Decrease.
130
During your descent, to control your buoyancy, you add air to your BCD _______.
In small amounts, frequently.
131
(True or False)
| Before starting your ascent, you should check your dive computer to be sure you're within its limits.
True.
132
To start your ascent, you should _____.
Swim up gently.
133
When you're ascending, you should ascend _____.
Slowly, at your computer's required rate.
134
You're ascending from a dive during which you're wearing a wetsuit. Your buoyancy will _____ as you ascend unless I adjust with your BCD
Increase.
135
(True or False)
| You would never find it necessary to ascend without a reference.
False. You may have to ascend away from a planned reference due to losing direction or to handle an emergency or problem.
136
To control your buoyancy while ascending, you should _____.
Vent your BCD in small amounts frequently.
137
When you reach the surface, the first thing you do is _____.
Inflate your BCD.
138
You wear an exposure suit whle diving for _____ and _____.
Protection and Warmth.
139
A safety stop is a stop between _____ and ______ for three to five minutes.
6 meters / 20 feet
| 3 meters / 10 feet
140
Which type of exposure suit requires a snug fit, without which water would carry away heat or it would be uncomfortable?
Wetsuit.
141
It's a hot, sunny day, but your buddy and you are diving in water that is 21C / 70F. You are diving in a dry suit, and your buddy is diving in a full wetsuit. Both of you will wear hoods. In this situation, ___________ is likely to be an issue you will need to avoid before the dive.
Overheating.
142
Which type of exposure suit requires special training?
Dry suit.
143
A hood is important when diving in water cooler then approximately _____.
21C / 70F
144
(True or False)
| The primary reason you carry a cutting tool is to defend yourself against sharks and other aquatic animals.
False. You carry a cutting tool for safety and convenience.
145
Which cutting tool is a bladed hook for cutting fishing line or net?
Z-knife.
146
You should wear at least your cutting tool _____.
Where either hand can reach it.
147
(True or False)
| You need a dive gear bag to carry your equipment in a bag specifically designed to survive the stresses of diving.
True.
148
When choosing a gear bag, you should choose one ______ for the gear you have.
Slightly larger then what you need.
149
(True or False)
| If you are using dive tables instead of a dive computer, you will need a dive timer and depth gauge.
True.
150
What three primary instruments would you normally have while diving?
1) SPG
2) Dive computer
3) Compass
151
(True or False)
It's a sunny day and you are on a dive boat with no shade. It would be a good idea to cover your gear, including instruments, with a towel.
True.
152
While underwater, you want to move efficiently by _____.
1) Being streamlined
2) Swimming slowly and steadily
3) Maintining proper trim.
153
During a dive, you can't stop shivering. The proper response would be to______.
Exit the water immediately, dry off and seek warmth.
154
During a dive, your buddy and you have to swim hard because of an unexpected current. If you were to begin to feel fatigued, have labor breathing, experience a feeling of suffocation or air starvation, and perhaps feel like I may panic, you should ______.
Stop all activity, signal your buddy and rest.
155
When planning your dive, your two buddies and you agree that the general procedure for buddy separation would be adequate. If during the dive you find you are with one buddy but can't see the other, what should you do?
This is a buddy separation. Stay with the remaining buddy and search for no more than a minute, then reunite on the surface.
156
You take a colorful fish identification slate with you while diving. Looking at the slate underwater at 12 meters / 40 feet, you would expect the slate to look _____.
less colorful, and larger/closer.
157
The buddy system is _____ responsibility.
Your.
158
Your fin strap comes loose (you later discover you didn't buckle it properly) while swimming at the surface in choppy waves. What habits would help you as you handle this problem?
1) Keep mask on
2) Mouthpiece in mouth
3) Having enough air in your BCD for adequate buoyancy
4) Staying close and signaling your buddy
159
You are about to begin a descent with your buddy. What steps should you take before actually beginning your descent?
1) Orient yourself to something at the surface.
2) Check that your computer is active.
3) Confirm that your buddy is ready.
160
Your buddy and you are planning a shore dive. You're descending onto a very gradual slope that begins at 5 meters / 15 feet, so your descent and ascent will be a gradual part of swimming out and back underwater. You both have similar cylinders filled to 200 bar / 3000 psi. You both plan:
50 bar / 500 psi reserve
20 bar / 300 psi for your safety stop
To turn the dive when we've used one-third of the air available to use on the dive.
You will head back wien either of your SPGs reads ______.
157bar / 2270psi
161
Your buddies and you are wearing wetsuits for exposure protection. As you descend, your buoyancy will _____ , so you should ______ to control your buoyancy.
Decrease, add air frequently to your BCD in small amounts.
162
As a prudent, conservative diver, these are normal parts of my ascents: ________.
1) Ascending at 18 meters / 60 feet per minute (or slower if specified by the computer)
2) Stopping for 3 minutes at approximately 5 meters / 15 feet
3) Adjusting my buoyancy in small amounts frequently.
163
While boat diving, your buddy and you finish your safety stop and ascend to the surface. When you reach the surface you should______.
1) Inflate your BCD
2) Switch to your snorkel
3) Signal okay to the dive master
164
(True or False)
| You should never descend or ascend without a reference that I can follow or make contact with.
False. There will be situations where you don’t have a reference.
165
Which suit provides insulation by a layer of air and undergarments?
Dry suit.
166
Which suit’s proper fit is important to keep water trapped against your body?
Wetsuit.
167
Which suit provides little or no insulation?
Skin suit
168
If you have only one cutting tool, the recommendation is that you wear it where _____ hand can reach it.
Either.
169
_______ can be a problem before the dive when diving on a warm day in a wetsuit or a dry suit.
Overheating.
170
(True or False)
You can enjoy diving in many different aquatic environments that include coral reefs, flooded quarries, and human-made dive environments.
True.
171
What conditions may affect you while diving?
Temperature, water movement, sunlight, aquatic life, and bottom composition.
172
In most (but not all) environments, as you go deeper, the water gets ______.
Colder.
173
Although somewhat subjective, you measure visibility as how far I can see ______ underwater.
Horizontally.
174
Particles made of fine material affect visibility by ______.
Remaining suspended for long periods.
175
(True or False)
| When diving in reduced visibility, it’s a good idea to descend and ascend with a reference.
True.
176
(True or False)
| The two types of water motion that most affect you as a diver are waves and current.
True.
177
(True or False)
| When diving in clear water, you don’t have to worry as much about staying close to my buddy.
False. In clear water, you may get too far away from your buddy because you can still see each other. As a rule of thumb, stay within two seconds of each other.
178
When diving in a mild current, normally you want to begin your dive ______ the current.
Headed into.
179
Due to a problem, your buddy and you had to surface away from the boat. There is a current, so you swam across it to reach the line trailed from the boat, but the current pushed you out too quickly. To avoid overexertion, you should ______.
Establish positive buoyancy, signal the boat to pick you up and remain calm.
180
When I'm diving, I want to avoid bottom contact because _____.
1) It helps keep the water clearer
2) There may be some hazard of cuts, scrapes, or stings
3) Fragile aquatic life could be damaged
181
If you were caught in a current and carried downstream past your planned exit, you should swim ______ the current.
Across.
182
The most common injury divers suffer may be _____.
Sunburn.
183
Within the recreational depth range, very distinct temperature changes are most common in ______ water environments.
Fresh.
184
(True or False)
| You learn to assess dive conditions by reading dive magazines and online sources about diving.
False. You learn to assess the dive conditions based on what other divers and your instructor show you, and based on experience diving and continuing your education.
185
Local orientations are important for safety and for _____.
Making your dives more enjoyable. You may sometimes get to use new gear and/or meet new buddies when diving in a new environment, but orientation is always important for safety and enjoyment.
186
If any aspect of a dive, including your assessment of the environment, causes you significant concern and/or anxiety, you should _____.
Determine how to handle the concern, or not dive.
187
"Diving within your limits" simply means diving within the limits of your ______.
Training, experience, and comfort.
188
(True or False)
One way exceeding your limits can increase your risk is by exposing you to hazards that you're not prepared to handle or may not even recognize until it's too late.
True.
189
(True or False)
Diving with an experienced diver and gaining dive experience are two ways to generally expand your limits, but they don't replace training for activities that require training.
True.
190
While planning a dive, your buddy (who is not an instructor) suggests that you dive significantly deeper than you have either training or experience with. Your best response is _____.
Politely say "no" and propose a depth limit appropriate for your limits.
191
The type of interaction you should generally have with aquatic life is ______.
Passive.
192
Potentially hazardous aquatic animals are, broadly, those that _____ and those that _____.
Sting / Puncture, Bite.
193
Nearly all injuries from aquatic life result from _____.
Human carelessness.
194
(True or False)
You should be familiar with potentially hazardous organisms that may be in the local environment, where you would find them and how they could harm you.
True.
195
(True or False)
You can learn more about handling aquatic life injuries (and other emergencies) in the PADI Rescue Diver and Emergency First Response Primary Care (CPR) and Secondary Care (First Aid) courses.
True.
196
While underwater near a kelp forest, you and your buddy see a large shark approach. You should _____.
Remain calm, near the bottom and watch it.
197
(True or False)
| Laws and regulations about aquatic life exist to preserve and protect organisms, and also for human safety.
True.
198
One potential hazard of some plants and kelp is _____.
Entanglement.
199
(True or False)
Project AWARE involves you and other divers as part of a movement to help keep our ocean clean and full of healthy, abundant marine life.
True.
200
(True or False)
When wading into water while shore diving, the general procedure is to put your fins on in the water about knee deep, then walk backward until you can swim.
False. The general procedure is to wade until your BCD can support you - about chest ddep - then put your fins on.
201
_____ and _____ generally determine the best way to wade in and out or how soon you put your fins on.
Bottom composition, aquatic life.
202
(True or False)
| When shore diving, you always have a long surface swim before descending and after ascending.
False. How far you swim before descending and/or after ascending varies with the dive site.
203
You and your buddy are assessing conditions for a shore dive. The waves are breaking when they are about 1 meter / 3 feet tall. About how deep is the water where they break?
1 meter / 3 feet.
204
(True or False)
| Diving in noderate to large surf requires special training. Diving in large and rough surf can be hazardous.
True.
205
You and your buddy experience mild surge after entering the water. You may be able to adjust for this by diving _____.
Deeper.
206
While assessing conditions, you and your buddy note that there are waves approaching shore from an angle. Your dive plan should account for having _____.
A current that moves you parallel to shore.
207
By accident, you find yourself in a strong current rushing repidly away from shore. Generally, you should inflate your BCD and swim _____.
Parallel to shore.
208
The wind has been blowing from shore for several days. During a dive, it's likely you will find _____ water.
Cooler, clearer.
209
Tides affect conditions related to diving including _____.
Currents, depth, and visibility.
210
While entering through mild surf, as a wave approaches you should stand _____.
Sideways to it.
211
While packing your gear for a boat dive, you want to pack it so _____.
What you need first is on top.
212
(True or False)
| It is recommended that you avoid excessive alcohol the night before a dive, or before any day of diving.
True.
213
While on a boat, you begin to feel seasick, but you don't feel like you are going to be sick. The best place to go is _____.
Into fresh air, close to the water level in the center of the boat.
214
(True or False)
| A roll call (or other method to verify everyone is aboard before leaving each dive site) is important for your safety.
True.
215
(True or False)
| It is important to secure your equipmnent on a boat inrough conditions, but it is not important in calm conditions.
False. Secure your equipment even in calm conditions because an unexpected wave (a passing boat's wake, for example) may cause it fo fall and infure someone, break something or fall overboard.
216
Generally, if you hear the dive boat's recall signal, you should _____.
Surface with your buddy where you are and look to the boat for instructions.
217
(True or False)
| It's a good idea to avoid walking with fins on any more than you must.
True.
218
You and your buddy are diving and there is a slight current. When we reach the bottom, we want to swim _____ the current for the first part of the dive.
Into.
219
While making a safety stop at the end of a dive, You notice that some loose line has snagged on the boat propeller, and could severely entangle it when the engine starts. You should _____.
Stay away from the propeller and report the problem to the crew.
220
You don't want to swim just below the surface because _____.
Boats can't see you, and could hit you.
221
You have just exited the water onto a boat by climbing a ladder with all of your gear on except fins. Once aboard, first I should _____.
Sit down as soon as possible, or have someone help be out of my kit.
222
You and your buddy are boat diving with a mild current. After entering, we would use the _____ line to pull ourselves to the ______ line, which we will descend along to the bottom.
Swim, mooring/anchor.
223
During a boat dive in mild to moderate current, you and your buddy lose your grips on the mooring line as you are coming up. You should _____.
Surface and swim across the current to reach the trail line.
224
You and your buddy surface and discover that the boat is nowhere in sight. You are beyond sight of shore, and there is no mooring buoy or anchored float. You should _____.
Inflate your BCDs, use your surface signalling devices, and wait for pickup.
225
(True or False)
The four stages of dive planning are:
1) Advance Planning
2) Preparation Planning
3) Last-Minute Preparation
4) Predive planning
True.
226
Typically, you decide on a dive buddy (s) or dive operator (boat or resort) during _____.
Advance Planning.
227
_____ is what you do a few hours before, to right up to when you leave for the dive site.
Last-minute preparation.
228
You want to begin _____ at least a day or two before the dive.
Preparation planning.
229
During _____, you and your buddy settle on details and make decisions based upon what we find at the dive site.
Predive planning.
230
Considerations for etended dive travel may include _____.
1) What gear to take.
2) Having my logbook and certification with me.
3) Researching the destination.
4) Planning activities other than diving.
231
You and your buddy have surfaced from a dive. The water is completely calm and there is no clear need to keep your mask on. Following the approach to diving that helps prevent problems, I would _____.
Keep my mask on.
232
(True or False)
| Under stress, you tend to do what you do by habit.
True.
233
(True or False)
| Continuing my diver education can extend and refine the emergency skills I learn in this course.
True.
234
You can prevent or control most dive problems that occur at the surface by diving within your limits, relaxing whil you dive and _____.
Becoming and staying buoyant.
235
(True or False)
| If a diving related problem occurs at the surface, you should immediatly switch from your snorkel to your regulator.
False. You should immediately establish buoyancy by inflating your BCD.
236
You can tell if your buddy is in control (not panicked) with a problem at the surface if my buddy _____.
1) Appears relatively relaxed
2) Asks for help.
3) Follows instructions.
4) Breathes from the snorkel or regulator.
237
When assisting a responsive diver at the surface, you always begin by _____.
Establishing buoyancy for you and the diver.
238
After establishing buoyancy for both of us, the primary concerns with an unresponsibe diver at the surface are _____ and _____.
Checking for breathing, providing rescue breaths if needed.
239
(True or False)
Your buddy doesn't move while floating at the surface, so I tap my buddy's shoulder. Your buddy signals "okay". You should disregard this signal and assume your buddy is unresponsive.
False. A diver who responds to communication is not unresponsive.
240
When assisting an unresponsive diver at the surface, if you find the victom isn't breathing, you should _____.
Provide rescue breaths.
241
To prevent and contol underwater problems, you should _____.
1) Relax while you dive.
2) Plan your air use.
3) Dive within your limits.
242
While diving, you begin to feel air-starved because you have been swimming hard. You should _____.
Signal stop and rest.
243
To breathe from a freeflowing regulator, you should hold the second stage _____.
With the mouthpiece pressed against your lips.
244
If you were to become entangled underwater, you should _____.
Stop, think, and work to free yourself.
245
During a dive, you find you are running low on air sooner than expected. Your buddy and you are still several minutes from our planned ascent point, but you are almost at reserve pressure. You should _____.
Ascend immediately where we are.
246
Although it shouldn't have happened, on a dive you fail to watch your SPG and run out of air. You don't have a pony bottle or self-contained ascent bottle. Your buddy is close at hand - less than two seconds away, and has an alternat second stage. Your best option is probably to _____.
Ascend using an alternate air source.
247
(True or False)
If you are bringing an unresponsive diver to the surface and the victim becomes to buoyant to control, you should stay with the victim even if your ascent is too fast.
False. You should let the victim go, complete your ascent at a safe rate, and resume the rescue at the surface.
248
A diver who is or was unresponsive my have the following signs and symptoms _____.
1) Difficulty breathing.
2) Unconsciousness.
3) Cardiac and respiratory Arrest
4) Chest pain.
249
(True or False)
A diver who was unresponsive underwater has become fully responsive, is fully alert and shows no apparent further problems. The diver still requires medical examination.
True.
250
Your first priority when assisting someone who is or was unresponsive is to contact emergency medical care and to _____.
Be sure the person is breathing.
251
(True or False)
A diver who was unresponsibe is breathing. Nonetheless, you should check breathing frequently while waiting for emergency medical care.
True.
252
At a minimum, you should have _____ visual and _____ audible surface signaling devices.
1, 1
253
The visual signaling device that you might use to signal aircraft is a(n) _____.
Signal mirror.
254
(True or False)
| One possible use for a surface float is to use it to assist another diver.
True.
255
(True or False)
| You use a dive flag so that boaters and other watercraft know that you're underwater and should keep clear.
True.
256
You and your buddy are using a surface float. You should carry the line with which we will tow it ______
Attached to a line caddy or reel.
257
The _____ flag indicates that a vessel has divers in the water and can't maneuver.
Alpha.
258
If there are no specific laws, the rule of thumb is that you should stay within _____ of your dive flag.
15 meters / 50 feet.
259
(True or False)
| One way to avoid disorientation while descending and ascending is to follow a reference.
True.
260
You and your buddy are diving from a boat and there's a mild current. In most circumstances, you would _____ for the first part of the dive.
Swim into the current.
261
You and your buddy get disoriented while boat diving. There is a mild current, and we surface away from the boat. We should _____ if unable to reach the boat or too tired, we should _____.
Swim across the current to reach the rail line, become buoyant and signal the boat to pick us up.
262
You and your buddy remain neutrally buoyant and stay above the bottom enough to avoid contact. We do this because bottom contact _____.
1) May injure or kill fragile aquatic life.
2) Tends to disturb the bottom and reduce the visibility.
3) Increases the risk of accidental cuts, scrapes, or stings.
263
(True or False)
When planning to dive in an environment that is new to you, it is recommended that you get a local orientation from an experienced diver or professional who knows the procedures, hazards, points of interest and other factors unique to the environment.
True.
264
Risks of diving beyond your training and experience limits include that _____.
1) In some forms of diving, the hazards are not obvious.
2) It can cause you to have a false sense of security.
3) Anxiety from doing so can distract you from noticing other problems.
265
While planning a shore dive, your dive buddy says it will be "no problem" diving in high surf that you've never been trained in nor have experience with. Looking at the surf, you don't think you are prepared for divin in it. Your best response is _____.
Politely refuse to dive and suggest an alternate location with no significant surf.
266
To prevent and / or handle injuries caused by aquatic life, you should _____.
1) Watch where you put my feet, hands, and knees.
2) Wear an exposure suit.
3) Treat all organisms with respect.
4) Be familiar with potentially hazardous animals where you're diving.
5) Be prepared to provide first aid for aquatic life injuries.
267
You and your buddy accidentally find ourselves in a rip current. There are no special, local procedures, so you follow the generally recommended action of _____.
Inflating your BCDs and swimming parallel to shore.
268
(True or False)
Depending upon your location, tides can cause significant changes to depth, currents and visibility, or they may have hardly any effect.
True.
269
When boarding a dive boat, the divemaster asks you to fill your name in on the roll. The reason for this is to ______.
Make sure everyone is aboard after each dive.
270
(True or False)
When assessing conditions, if there is anything that causes you significant anxiety or concern, if you can't address it, you should not dive. Ultimately, you are responsible for your own safety, so only you can make the final decision to dive.
True.
271
The best entry is usually the ______.
Easiest one.
272
You and your buddy are diving from a boat in mild to moderate corrent. There is a line from the back of the boat where you will enter, which leads to the mooring line at the front of the boat. The purpose of the line leading to the mooring line is to _____.
Allow us to swim to it if we surface away from the boat.
273
(True or False)
You and your buddy surface, and the boat is not in sight, nor is there a float, and you are beyond sight of shore. You should inflate your BCDs, deploy your surface signalling devices, and stay together.
True.
274
(True or False)
| You should stay well away from the boat propeller at all times, even when the engine isn't running.
True.
275
Training that expands and develops your skills in preventing and managing problems include ___.
1) PADI Rescue Diver
2) PADI Emergency Oxygen Provider
3) Emergency First Response Primary and Secondary Care courses.
276
At the surface, you have a problem. If you have not already done so, the first thing you should do is _____.
Make yourself buoyant (inflate BCD and/or drop weights).
277
A diver at the surface begins to struggle. He has wide, unseeing eyes and he has pushed off his mask. His BCD isn't inflated and he doesn't inflate it when the divemaster calls for him to do so. This diver is _____. To help, you should first _____.
Out of control, make yourself and the diver buoyant (inflate BCD/Drop weights)
278
With an unresponsive diver underwater, the primary concern is _____. Once at the surface, besides establishing buoyancy and calling for help, the primary concern is _____.
Getting the victim to the surface, checking for breathing and providing resue breaths if the victom isn't breathing.
279
Whle diving, you begin to feel exhausted and air-starved becasue you have been swimming strenuously. I should _____.
Signal "stop" and rest.
280
Although it shouldn't have happened, on a dive at 10 meters / 30 feet, you fail to watch your SPG and run out of air. You don't have a pony bottle or self-contained ascent bottle. Your buddy is about 12 meters 40 feet away, and has an alternate second stage. Your best option is probably _____.
Make a controlled emergency swimming ascent.
281
In helping an unresponsive diver, after you check for breathing and provide CPR as needed (once out of the water),_____ has the highest priority.
Contact emergency medical care.
282
(True or False)
Any diver who has been unresponsive in or under water requires dedical examination, even if the person seems fully recovered.
True.
283
You and your buddy are underwater within 6 meters / 20 feet of your float with a locally-recognized flag. Your hear a boat, and it sounds close and is getting closer. What should you do?
You should stay dep enough to be safe. The boater may not see or recognize the flag.
284
For an Underwater Naturalist dive, you want to carry several small slates and some measuring tools. A mesh utility bag may be an appropriate way to carry these items.
True.
285
At a minimum, you should have _____ visual and ______ audible signaling devices.
1, 1
286
(True or False)
| Mesh bags range in size and options. You would probably choose a larger one for carrying a wet exposure suit.
True.
287
During an underwater cleanup, you and your buddy fill a large mesh utility bag with several kilograms / pounds of garbage. You should _____.
Carry the bag in your hands.
288
Slates or wet books can be used for what purposes?
1) Communication.
2) Noting limits and backup information.
3) Recording information.
4) The unexpected.
289
When choosing a slate, the main option you usually consider is _____.
Size.
290
(True or False)
| One use of a dive light is to look into holes and cracks where shy organisms may hide during the day.
True.
291
Wide beam lights tend to be _____ dive lights.
Larger.
292
You log your dives ______.
1) To document training.
2) As a reference tool.
3) To share information.
4) To keep related information.
293
The minimum information you would typically log includes ______.
1) Dive site name.
2) The depth.
3) Dive time.
4) My buddy's name.
294
(True or False)
You can choose from very basic software intended only for planning recreational dives, as well as software designed for much more complex diving.
True.
295
Dive planning software can help me estimate and plan _____.
1) My air use.
| 2) Computer dive time.
296
A spare parts kit contains _____.
User replaceable items.
297
A spare parts kit might contain ______.
1) Spare mask strap, fin straps.
2) Harness / weight belt buckle.
3) Cable (pull) tiles.
4) Adjustable wrench (spanner), pliers, screw drivers, hex wrenches (allen keys)
5) Regulator mouthpiece.
6) Accessory clip.
7) Various sized cylinder valve / DIN valve o-rings.
298
(True or False)
| It is recommended that you have a complete physical examination when you start diving and regularly thereafter.
True.
299
(True or False)
| Diving can be physically demanding, so you should be in good health and reasonably fit.
True.
300
Factors that can strain your heart in diving include _______.
1) Swimming hard.
2) Carrying Equipment.
3) Climbing a ladder.
4) Heat stress.
301
(True or False)
If you are predisposed to heart disease, you should consult your doctor so you can assess and manage the risk as a diver.
True.
302
Before diving, you should refrain using _____ and _____.
Alcohol, tobacco.
303
The best way to keep your dive knowledge and skills current and refreshed is to_____.
Use them by diving regularly.
304
As a new PADI Open Water Diver, you should refresh your dive skills with a PADI ReActivate after _____ of inactivity?
Six months.
305
Continuing your diver education helps keep my skills and knowledge sharp by _____.
1) Allowing me to visit new dive sites.
2) Increasing my opportunities to dive.
3) Expanding the types of diving I do.
4) Introducing me to new buddies I can dive with.
306
(True or False)
Before using prescribed or over-the-counter medication, if you are not sure how they will effect your diving, you should consult your physician.
True.
307
For practical purposes, air is _____ percent oxygen.
21.
308
For practical purposes, air consists of oxygen and ___.
Nitrogen.
309
What relates to the component gases of air?
Oxygen issues.
310
(True or False)
| As a PADI Open Water Diver, you would not dive with a cylinder labled "oxygen" or known to have 100 percent oxygen.
True.
311
(True or False)
Enriched air nitrox can have oxygen issues. To avoid these, you 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.
312
Possible causes of contaminated air in your scuba cylinder include high levels of contaminant in the source gas and _____.
Getting it filled at an improper source.
313
(Yes or No)
| During a dive, you begin to have a headache, feel ill and dizzy. Are these possible symptoms of contaminated air?
Yes.
314
(True or False)
After a dive, your buddy feels ill and has cherry red lips and nail beds. After breathing oxygen, your buddy seems to be doing fine, so no other action is required.
False. The diver should have medical attention in all cases of suspected contaminated air.
315
(True or False)
| To avoid contaminated air, you should have your cylinder filled only at reputable scuba air sources.
True.
316
The two primary factors that influence how much nitrogen dissolves into your body tissues during a dive are _____ and _____.
Depth, time.
317
(True or False)
If you exceed established depth and time limits while diving and then surface, bubbles can form in your body tissues, causing decompression sickness.
True.
318
(True or False)
If you dive within recreational limits using air, you avoid the problems associated with oxygen being toxic or causing fire / combustion issues.
True.
319
(Yes or No)
| After a dive, a diver has numbness, tingling and weakness in the arms. Are these possible signs / symptoms of DCS?
Yes.
320
DCS
DeCompression Sickness.
321
Secondary factors thought to contribute to DCS include _____.
1) Age.
2) Cold.
3) Injuries.
4) Poor fitness / high body fat.
322
(True or False)
Dive computers track the amount of theoretical nitrogen in your body by measuring the depth and time through out the dive.
True.
323
(True or False)
| During a dive, your dive computer reads the nitrogen that is actually absorbed by your body.
False. Dive computers and tables do not directly access anything going in inside your body.
324
Because dive computers and tables cannot account for individual variation, you should dive well within limits and _____.
Ascend slowly. Note: You should descend slowly so you can equalize, but doing so does not reduce your DCS risk.
325
A no stop dive means you can, if necessary, ascend directly to the surace without stopping _____ the dive.
At any time during.
326
(True or False)
| A no stop limit is the maximum time you can spend at a given depth and still ascend directly to the surface.
True.
327
If you stay longer than a no stop limit, you must _____.
Make an emergency decompression stop.
328
While at 18 meters / 60 feet, your computer says you have 40 minutes no stop time remaining. You and your buddy ascend to 10 meters / 30 feet. Your computers will show our no stop time is _____.
Longer.
329
(True or False)
| Ascending faster than the required ascent rate of your computer or table may increase your risk of DCS.
True.
330
If you were to skip a ______ stop, you would surface outside model limits and have a high risk of decompression sickness.
Safety.
331
If you are planning a dive to 18 meters / 60 feet, your no stop limits will be _____ than your no stop limits for a dive to 12 meters / 40 feet.
Shorter.
332
RDP
Recreational Dive Planner
333
On a repetitive dive, for a known depth, your no stop limits will be _____ those of the first dive.
Shorter than.
334
(True or False)
| A repetitive dive is a dive made while you still have theoretical residual nitrogen in your body.
True.
335
After a surface interval, the nitrogen dissolved in your body will _____.
Decline.
336
(True or False)
| Your dive computer only calculates when you are underwater. It doesn't do anything between dives.
False. Your dive computer continues to calculate until your theoretical nitrogen levels return to normal.
337
(True or False)
| A surface interval is the time it takes to reach the surface.
False. A surface interval is the time you are at the surface between dives.
338
(True or False)
| You must use the same dive computer the entire day of diving, on all dives, and not share it with another diver.
True.
339
Advantages of a dive computer over dive tables include _____.
1) Are easier to use than tables.
2) Help offset human error.
3) Give you more time underwater.
340
Dive tables like the RDP and eRDPml use _____ tables to calculate repetitive dives.
Three.
341
The first step in setting up your dive computer is to _____.
Read the manufacturer's instructions.
342
(True or False)
During a dive with your dive computer, you and your buddy will turn the dive based on the first limit you reach: remaining no stop time or air supply turn point.
True.
343
(True or False)
During a dive with your dive computer, you and your buddy will turn the dive based on the first limit we reach: remaining no stop time or air supply turn point.
True.
344
During a dive, your dive computer fails, and you're not using a backup. You should _____.
1) Ascend.
2) Make a safety stop.
3) End the dive.
345
(True or False)
During a dive, your dive computer allows more dive time than your buddy or you planned for a given depth. You both have plenty of air, so it's okay to stay longer or go deeper than we planned.
False. Don't exceed your planned depth or tme just because your omputer will let you.
346
SAFE
Slowly
Ascend
From
Every Dive
347
(Yes or No)
| Are divers a significant threat to the overall health of the underwater environment?
No.
348
(True or False)
Your influence as a diver and ambassador for the underwater world allows you to be part of the solution to the problems the world's aquatic ecosystems face.
True.
349
(True or False)
One reason it is important to apply environmentally friendly dive skills is to preserve the natural beauty for other divers.
True.
350
During an underwater cleanup, you and your buddy fill a large mesh utility bag with several kilograms / pounds of garbage. You should _____.
Carry the bag in your hands.
351
(True or False)
| You have a bit of a cold, but feel you can manage the dive well enough, so it is okay to dive.
False.
352
(True or False)
Exertion from swimming hard, carrying equipment, climbing a ladder, long walks wearing gear, and heat stress from wearing an exposure suit in a hot climate can lead to heart attack in predisposed infividuals. These factors can also cause problens for poeple with other cardiovascular conditions.
True.
353
(True or False)
Medications can create problems while diving, so you should use prescription drugs and over-the-counter medications with caution. Any drug that affects your judgement, thinking and / or reactions should generally not be used before diving.
True.
354
Before diving, you should refrain from using _____.
1) Alcohol.
| 2) Tobacco.
355
As a new PADI Open Water Diver, you should refresh your skills with a PADI Scuba review after _____ of inactivity.
Six months.
356
(True or False)
| It is recommended that pregnant women do not dive.
True.
357
(True or False)
One reason it is important to be certified as a PADI Enriched Air Diver or under the supervision of a PADI Enrished Air Instructor, before using enriched air nitrox is to avoid oxygen toxicity problems.
True.
358
(True or False)
| To avoid contaminated air, you should have your cylinder filled only at reputable scuba air sources.
True.
359
The two primary factors that influence how much nitrogen dissolves into your body tissues during a dive are _____ and _____.
Depth, Time.
360
(True or False)
If you exceed established depth and time limits while diving and then surface, bubbles can form in your body tissues, causing decompression sickness.
True.
361
(Yes or No)
| During a dive, you begin to have a headache, feel ill and dizzy. Are these possible symptoms of contaminated air?
Yes.
362
(Yes or No)
| After a dive, a diver has numbness, tingling, and weakness in the arms. Are these possible signs / symptoms of DCS?
Yes.
363
Secondary factors thought to contribute to DCS include _____.
1) Age.
2) Cold.
3) Injuries.
4) Poor fitness / high body fat
364
A no stop dive means you can, _____ the dive, ascend directly to the surface without stopping if necessary (although you would normally plan a safety stop).
At any time during.
365
If you are planing a dive to 12 meters / 40 feet, your no stop limit will be _____ than my no stop limit for a dive to 10 meters / 30 feet.
Shorter.
366
(True or False)
| Exceeding your computer or table's ascent rate may increase your risk of DCS.
True.
367
On a repetitive dive, for a given depth your no stop limits will be _____ those of the first dive.
Shorter than.
368
(True or False)
During a dive with your dive computer, your buddy and you wil turn the dive based on the first limit we reach: remaining no stop time or air supply turn point.
True.
369
(True or False)
| You must use the same dive computer the entire day of diving, on all dives, and not share it with another diver.
True.
370
During a dive, your dive computer fails, and you're not using a backup. You should _____.
1) Ascend.
2) Make a safety stop,
3) End the dive.
371
When diving with a computer, it is recommended that you _____.
1) Dive well within its limits.
2) Follow the most conservative computer - yours or your buddy's.
3) Start at the deepest point and progress shallower.
4) Ascend slowly and make a safety stop.
372
You would find a minimum surface interval when, after a dive, you want to know how long the _____ would be.
Time at the surface.
373
(True or False)
One reason it is important to have environmentally friendly dive skills is to preserve the natural beauty for other divers.
True.
374
(True or False)
| You can use the RDP or eRDPml to find the exact time your dive computer requires for a minimum surface interval.
False. The RDP or eRDPml will give you a useful estimate of your computer's minimum surface interval, but it will probably not be exactly the same.
375
Going to altitude after diving may be a problem because the _____.
Lower pressure can increase DCS risk.
376
(True or False)
The difference between flying after diving and altitude diving is that when flying after diving, you go to altitude after a dive, and in altitude diving, you begin and end a dive at altitude.
True.
377
(True or False)
One way to find a minimum surface interval is to periodically check the no stop times for the depth you want, between dives.
True.
378
(True or False)
Flying after diving recommendations may change over time, so you should check online and print sources to keep up with and follow the most current ones.
True.
379
You and your buddy have made two no stop dives a day for the last two days. Based on current recommendations, you should wait at least _____ after your last dive before flying.
18.
380
When diving at an altitude of _____ or higher, you need to use altitude diving procedures.
300 meters / 1000 feet.
381
Cold and / or strenuous dives may be a problem with respect to DCS risk because _____.
You may end the dives with more dissolved nitrogen than calculated by dive computer or tables.
382
Using the RDP table or eRDPml, you should calculate a cold or stranuous dive as _____.
4 meters / 10 feet deeper that the actual depth.
383
If you go over a no stop limit, you _____.
Will have to make one or more emergency decompression stops.
384
If you're cold or exert yourself strenuouisly during a dive, you should _____.
Be even more conservative.
385
(True or False)
If you surface without making an emergency decompression stop, you should get a fresh cylinder of air then go back underwater to make the stop.
False. If you miss an emergency decompression stop, relax, breathe emergency oxygen and monitor yourself for DCS symptoms, and don't dive for at least 24 hours.
386
The depths and times of emergency decompression stops are _____.
Given by your dive computer.
387
The term "decompression illness" _____.
Includes both lung overexpansion injuries and DCS.
388
Treatment for most cases of DCI requires _____.
Recompression in a chamber.
389
DCI
DeCompression Illness.
390
(True or False)
| Gas narcosis is thought to be harmful itself.
False. Gas narcosis is not thought to be harmful itself. The hazard is that it impairs the good judgment, clear thinking, and timely responses you need to avoid and manage problems underwater.
391
Signs and symptoms of gas narcosis include _____.
1) Loss of coordination.
2) Slowed thinking.
3) Ignoring or desregard for safety.
392
(True or False)
Gas narcosis is thought to be caused by the increased amount of dissolved gases in body tissues slowing nerve impulses that travel in the brain and nervous system.
True.
393
Before a dive, you feel a bit tired. This may make narcosis _____.
Noticeable at a shallower depth.
394
Most divers usually begin to notice gas narcosis at a depth of approximately _____.
30 meters / 100 feet.
395
If you are diving and begin to feel intoxicated, you should _____.
Signal my buddy to ascend to a shallower depth.
396
The _____ is / are always your direction of travel when navigating with a compass.
Lubber line.
397
You should hold your compass so the _____ is / are aligned with the centerline of your body.
Lubber line.
398
(True or False)
| Underwater navigation helps you save air and can help you get to an exit point the shortest way if you have a problem.
True.
399
As you swim while navigating with a compass, you should keep the _____ within the index marks.
North needle.
400
(True or False)
| With most electronic compasses, to navigate a straight line, you swim with the same degree heading showing.
True.
401
(True or False)
The Course Evaluation Questionnaire helps to maintain the quality of PADI courses and to recognize instructors for outstanding performance.
True.
402
(True or False)
| Generally, the purpose of the PADI system of diver education is to help you continue to enjoy diving.
True.
403
As a new PADI Open Water Diver, you were trained to a maximum depth of _______.
18 meters / 60 feet.
404
You and your buddy have just finished a dive to 15 meters / 50 feet for 60 minutes. You want to return to the same site and depth and stay another 60 minutes. You can _______ to see about how long you have to remain at the surface to have enough no stop time.
Wait and check your no stop times on your computers periodically.
405
You've just finished a single no stop dive with your buddy. You have not been diving in the past several days, and this is the only dive you make. Based on current recommendations, the minimum surface interval before you fly is _____.
12 hours.
406
You need to use special altitude diving procedures when diving at an altitude greater than _____.
300 meters / 1000 feet
407
Going to altitude after diving may be a problem because _____.
Most decompression models are based on surfacing at sea level.
408
At the end of a dive, your dive buddy's foot gets tangled in an abandoned fishing net. It takes five minutes to get free, but that delays your ascent making you exceed your no stop limit. This means that before you surface, we will have to make a(n) _____ stop to return your nitrogen level from outside the accepted limits
Emergency Decompression.
409
On a dive boat, after coming aboard, two divers discover they accidentally surfaced without making an emergency decompression stop. They should _____ and not dive for at least 24 hours.
Relax, breathe oxygen, and check themselves for DCS symptoms.
410
(True or False)
If you are cold or exercise a lot during a dive, you may surface with more nitrogen than calculated by your dive computer or dive tables.
True.
411
In an emergency decompression situation, you find you won't have enough air to complete all the required stop time. You should _____.
Stop as long as yoyu can, but save enough air to surface and exit safely.
412
To help a diver with suspected decompression illness, you should _____.
1) Contact emergency medical care.
| 2) Provide emergency oxygen.
413
Nearly all cases of decompression illness require treatement _____.
In a recompression chamber.
414
During a dive, you feel you're having trouble thinking clearly. You should _____.
Signal your buddy and ascend to a shallower depth.
415
On a standard underwater compass, the magnetic north needle _____.
Points to magnetic north.
416
As a PADI Open Water diver, you have been trained to a maximum depth of _____ (or the actual depth you reached, if shallower).
18 meters / 60 feet
417
You and your buddy want to travel in a straight line using a compass, you should point the _____ in your desired travel direction, then rotate the _____ until the _____ is / are over the _____.
Lubber line, bezel, index marks, magnetic north needle.
418
When using the RDP, any dive planned to ____ feet or less should be calculated as a dive to ____ feet
35, 35
419
When using the RDP, use the _____ or _____ depth shown for the depths of all dives.
Exact, next-greater.
420
When using the RDP, use the _____ or _____ time shown for the times of all dives.
Exact, next-greater.
421
When using the RDP, ascend from all dives no faster than _____ feet per minute.
60
422
When using the RDP, if you are planning _____ or more dives in a day, beginning with the first dive, if your ending pressure group after any dive is___ or _____, the minimum surface interval between all subsequent tives is ___. If your ending pressure group is ___ or ___, the minimum surface interval between all subsequent dives is _____.
Three, W, X, 1hour, Y, Z, 3 hours
423
NDL
No Decompression Limit
424
When using the RDP, do not dive below ____.
130 feet
425
When using the RDP, if you discover you exceeded a no decompression limit or descended below 130 feet for less than 5 minutes, you should ____.
Immediately ascend to 15 feet and make an emergency decompression stop for 8 minutes. Any following dive must be followed by a surface interval of 6 hours.
426
When using the RDP, if you discover you exceeded a no decompression limit or descended below 130 feet for more than 5 minutes, you should ____.
Immediately ascend to 15 feet and make an emergency decompression stop for no less than 15 minutes. Upon surfacing, the diver must remain out of the water for at least 24 hours.
427
RNT
Residual Nitrogen Time
428
ABT
Actual Bottom Time
429
TBT
Total Bottom Time
