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					Section 1 –          Knowledge Review


     Question 1                Question 6   Question 11


      Question 2               Question 7   Question 12


     Question 3                Question 8   Question 13


      Question 4               Question 9   Question 14


      Question 5              Question 10   Question 15

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Section 1 – Knowledge Review Overview
Knowledge Review -                   Question 1
   Question 1
       True or False. An object is neutrally
        buoyant when it displaces an amount of
        water less than its own weight.
   Answer 1
        False




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Section 1-1 Knowledge Review
Knowledge Review –                   Question2
   Question 2
       Explain why buoyancy control, both on
        the surface and underwater, is one of the
        most important skills you can master.
   Answer 2
        On the surface: To conserve energy
        while resting or swimming.
        Underwater: To stay off the bottom
        and avoid crushing or damaging
        delicate aquatic life.

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Section 1-2 Knowledge Review
Knowledge Review -                   Question 3
   Question 3
       Fill in the blanks with the appropriate
        words: fresh water or salt water. “The
        same object would be more buoyant in
        ______ water than it would be in
        ______water.”
   Answer 3
        The same object would be more buoyant
        in salt water than it would be in fresh
        water.

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Section 1-3 Knowledge Review
Knowledge Review -                   Question 4
   Question 4
       True or False. “Because water is much
        denser than air, the pressure change for a
        given distance ascent or descent is
        significantly greater in water than in air.”
   Answer 4
        True




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Section 1-4 Knowledge Review
Knowledge Review -                     Question 5
   Question 5
       Complete the following chart for a sealed flexible
        bag, full of air at the surface.
   Answer 5
         Depth            Pressure        Volume              Density
           0’           1bar/ATM                1                  X1
        10m/33’         2 bar/ATM           1/2                    X2
        30m/99’         4 bar/ATM           1/4                    X4
        40m/132’        5 bar/ATM           1/5                    X5



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Section 1-5 Knowledge Review
Knowledge Review -                   Question 6
   Question 6
       Circle the letter of the best definition for a
        squeeze.
   Answer 6
    B. A condition that causes pain and
         discomfort when the pressure inside an air
         space of your body is less than the
         pressure outside an air space.



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Section 1-6 Knowledge Review
Knowledge Review -                   Question 7
   Question 7
       Check each statement that describes a technique
        used to equalize air spaces during descent:
   Answer 7
    A. Block your nose and attempt to gently
       blow through it.
    B. Swallow and wiggle the jaw from side to
       side.
    C. Block your nose and attempt to gently
       blow through it while swallowing and
       wiggling the jaw from side to side.
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Section 1-7 Knowledge Review
Knowledge Review -                   Question 8
   Question 8
       State how often you should equalize your air
        spaces during descent.
   Answer 8
        Every few metres/feet, before discomfort
        is felt.




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Section 1-8 Knowledge Review
Knowledge Review -                   Question 9
   Question 9
       True or False. “If you feel discomfort in your ears
        while descending, continue downward until the
        discomfort is gone”.
   Answer 9
        False




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Section 1-9 Knowledge Review
Knowledge Review -                   Question 10
   Question 10
       State the most important rule in scuba diving.
   Answer 10
        Breathe continuously and never, never
        hold your breath.




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Section 1-10 Knowledge Review
Knowledge Review -                   Question 11
   Question 11
       Circle the letter of the best definition for a reverse
        block.
   Answer 11
    A. A condition that occurs when expanding air
         cannot escape from a body air space during
         ascent, causing pain and discomfort.




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Section 1-11 Knowledge Review
Knowledge Review -                   Question 12
   Question 12
       Describe what action you should take if you feel
        discomfort during ascent due to air expansion,
        whether in your ears, sinuses, stomach, intestines
        or teeth.
   Answer 12
        Slow or stop ascent, descend a metre/few
        feet and allow trapped air to work its way
        out.


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Section 1-12 Knowledge Review
Knowledge Review -                   Question 13
   Question 13
       When scuba diving, why must your nose be
        enclosed in the mask?
   Answer 13
        To exhale into it and equalize.




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Section 1-13 Knowledge Review
Knowledge Review -                   Question 14
   Question 14
       Explain the best way to prevent water from
        entering your scuba tank.
   Answer 14
        Never allow the tank to be completely
        emptied of air pressure.




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Section 1-14 Knowledge Review
Knowledge Review -                     Question 15
   Question 15
       Circle the appropriate answer. The most important
        feature for consideration when selecting a
        regulator is:
   Answer 15
        A. Color
        B. The number of hoses it has
        C. Ease of breathing
        D. Size


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Section 1-15 Knowledge Review
Section 2 –             Knowledge Review
                                    Question 6   Question 12


     Question 1                     Question 7   Question 13


      Question 2                    Question 8   Question 14


     Question 3                     Question 9   Question 15


      Question 4                   Question 10   Question 16


      Question 5                   Question 11   Question 17


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Section 2 – Knowledge Review Overview
Knowledge Review -                   Question 1
   Question 1
       Check one. “Underwater, objects appear 25
        percent __________ and/or __________.”
         A. smaller, further away
         B. larger, closer
   Answer 1
        B. larger, closer




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Section 2-1 Knowledge Review
Knowledge Review -                   Question 2
   Question 2
       Check one. Since it travels about four times faster
        in water than in air, you will have difficulty
        determining the origin of __________ underwater.
         A. light
         B. sound
   Answer 2
        B. sound



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Section 2-2 Knowledge Review
Knowledge Review -                   Question 3
   Question 3
       Fill in the blank with the appropriate word: faster
        or slower.
        “Water conducts heat away from your body
        ______ than air does.”
   Answer 3
        Faster




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Section 2-3 Knowledge Review
Knowledge Review -                   Question 4
   Question 4
       Describe what you should do if you begin
        shivering continuously underwater.


   Answer 4
        Get out of the water, dry off and seek
        warmth.




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Section 2-4 Knowledge Review
Knowledge Review -                   Question 5
   Question 5
       Of the procedures you can follow to compensate
        for the increased resistance of water while diving,
        check those listed here:
   Answer 5
        A. Streamline yourself and your equipment.
        B. Avoid rapid, jerky movements.
        C. Move slowly and steadily
        D. Pace yourself.

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Section 2-5 Knowledge Review
Knowledge Review -                   Question 6
   Question 6
       Check the statement that best describes the
        proper breathing pattern for diving.


   Answer 6
         A. Consistently rapid and shallow.
         B. Consistently slow and deep.




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Section 2-6 Knowledge Review
Knowledge Review -                   Question 7
   Question 7
       It is easy to prevent overexertion while diving.
        Check the proper preventative measures listed
        here.
   Answer 7
    A. Move slowly and avoid extended
         strenuous activity.
    B. Use your arms rather than your legs for
       propulsion underwater.
    C. Know your physical limits.
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Section 2-7 Knowledge Review
Knowledge Review -                   Question 8
   Question 8
       Explain what to do if you become overexerted
        while diving.
   Answer 8
    A. Under water:
        Stop all activity, breathe deeply and rest. Hold
        onto an object for support if possible.
    B. At the surface:
        Establish buoyancy and stop moving. Rest and
        catch your breath. Once recovered: move at
        slower pace.

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Section 2-8 Knowledge Review
Knowledge Review -                   Question 9
   Question 9
       Check each statement that describes a technique
        used for airway control:
   Answer 9
    A. Use your tongue as a splash guard by
       placing the tip on the roof of your mouth.
    B. Inhale slowly.
    C. Avoid rapid, jerky movement.
    D. Inhale cautiously.

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Section 2-9 Knowledge Review
Knowledge Review -                   Question 10
   Question 10
       Explain why it is important not to wear a tight-
        fitting hood.
   Answer 10
        A hood that’s too tight can cause changes
        in the heart rate due to compression of the
        arteries in the neck.




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Section 2-10 Knowledge Review
Knowledge Review -                   Question 11
   Question 11
       Check the appropriate answer. The most
        important feature of any weight system is:
   Answer 11
         A. the size and shape of the weights.
         B. the ease of adjustment.
         C. a quick-release mechanism.




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Section 2-11 Knowledge Review
Knowledge Review -                   Question 12
   Question 12
       Check one. An alternate air source should be
        ________________, so it can be quickly and
        easily identified by a diver needing the device.
   Answer 12
         A. tucked under the weight belt
         B. conspicuously marked




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Section 2-12 Knowledge Review
Knowledge Review -                   Question 13
   Question 13
       Describe where you should attach an alternate air
        source to your body.
   Answer 13
        In the triangular area between your mouth
        and the lower corners of your rib cage.




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Section 2-13 Knowledge Review
Knowledge Review - Question                                  14
   Question 14
       True or False. A dive knife is used as a tool (to
        measure, pry, dig, cut and pound), but is not
        intended to be, nor should be, used as a weapon.
   Answer 14
        True




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Section 2-14 Knowledge Review
Knowledge Review - Question                                  15
   Question 15
       Identify the meaning of the standard hand signal
        illustrated here.
   Answer 15
         A. OK? OK
         B. Distress, help
         C. Out-of-air




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Section 2-15 Knowledge Review
Knowledge Review - Question                                  16
   Question 16
       Explain how to check for proper weighting.
   Answer 16
        You should float at eye level with an empty
        BCD and while holding a normal breath.




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Section 2-16 Knowledge Review
Knowledge Review - Question                                    17
   Question 17
       List and describe the steps of the predive safety
        check and explain when you should use this
        check.
   Answer 17
         BWRAF –
         B-BCD, W-Weights, R-Releases, A-Air,
         F-Final ok.
         Should be done before each dive.

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Section 2-17 Knowledge Review
Section 3 –             Knowledge Review


     Question 1                      Question 6   Question 11


      Question 2                     Question 7   Question 12


     Question 3                      Question 8   Question 13


      Question 4                     Question 9   Question 14


      Question 5                    Question 10   Question 15

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Section 3 – Knowledge Review Overview
Knowledge Review - Question                                  1
   Question 1
       There are several factors that affect visibility
        underwater. Check those listed here.
   Answer 1
         A. weather
         B. water movement
         C. ambient pressure
         D. suspended particles


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Section 3-1 Knowledge Review
Knowledge Review - Question                                  2
   Question 2
       True or False. “To avoid problems associated with
        diving in clear water, use an accurate depth
        gauge, refer to it frequently, and it is
        recommended that you use a line for ascents and
        descents.’’
   Answer 2
         True



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Section 3-2 Knowledge Review
Knowledge Review - Question                                  3
   Question 3
       Explain what you should do if you find yourself
        caught in a current at the surface.
   Answer 3
        Swim perpendicular to the current or
        establish buoyancy, signal for assistance
        and wait for help.




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Section 3-3 Knowledge Review
Knowledge Review - Question                                  4
   Question 4
       True or False. “You will find it easier to swim
        against a mild current along the bottom where it is
        generally weaker than on the surface.”
   Answer 4
         True




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Section 3-4 Knowledge Review
Knowledge Review - Question                                  5
   Question 5
       Check one. If a current is present, you should
        generally begin your dive:
   Answer 5
        A. with the current.
        B. across the current.
        C. against the current.




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Section 3-5 Knowledge Review
Knowledge Review - Question                                  6
   Question 6
       Check one. Nearly all injuries from aquatic life are
        caused by ____________action on the part of the
        animal.
   Answer 6
        A. unpredictable
        B. unprovoked
        C. defensive



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Section 3-6 Knowledge Review
Knowledge Review - Question                                  7
   Question 7
       Describe what you should do if you spot an
        aggressive animal underwater.
   Answer 7
        Remain still and calm on the bottom and
        watch what it does. Calmly move away from
        the area by swimming on the bottom and
        exit.



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Section 3-7 Knowledge Review
Knowledge Review - Question                                  8
   Question 8
       True or False. “For safety and enjoyment when
        diving in a new area or engaging in a new activity,
        be sure to obtain a proper orientation.”
   Answer 8
        True




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Section 3-8 Knowledge Review
Knowledge Review - Question                                  9
   Question 9
       A rip current can be recognized as a line of turbid,
        foamy water moving ________________
   Answer 9
         A. toward shore.
         B. seaward.
         C. parallel to shore.




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Section 3-9 Knowledge Review
Knowledge Review - Question                                  10
   Question 10
       Outline three ways to prevent or control most
        diving problems that occur at the surface.
   Answer 10
         1. Dive within my limitations.
         2. Relax while I dive.
         3. Maintain positive buoyancy at the
            surface.


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Section 3-10 Knowledge Review
Knowledge Review - Question                                  11
   Question 11
       True or False. “The first step in assisting another
        diver with a problem at the surface is to talk to
        him, offering encouragement and persuading him
        to relax.”
   Answer 11
        False




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Section 3-11 Knowledge Review
Knowledge Review - Question                                  12
   Question 12
       Arrange the five low-on-air/out-of-air emergency
        procedures in order of priority of 1 through 5.
   Answer 12
          5 Buoyant emergency ascent
          3 Controlled emergency swimming ascent
          1 Normal ascent
          4 Buddy breathing ascent
          2 Alternate air source ascent

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Section 3-12 Knowledge Review
Knowledge Review - Question                                   13
   Question 13
       Check one. If you become entangled underwater,
        you should:
   Answer 13
        A. Twist and turn to free yourself.
        B. Stop, think and then work slowly and
                calmly to free yourself.




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Section 3-13 Knowledge Review
Knowledge Review - Question                                  14
   Question 14
       True or False. “With an unconscious diver, the
        primary concern is to remove him from the
        water.”
   Answer 14
        False




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Section 3-14 Knowledge Review
Knowledge Review - Question                                    15
   Question 15
       True or False. Once removed from the water, an
        unconscious diver should be administered oxygen
        if available.
   Answer 15
         True




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Section 3-15 Knowledge Review
Section 4 –             Knowledge Review


     Question 1                      Question 6   Question 11


      Question 2                     Question 7   Question 12


     Question 3                      Question 8   Question 13


      Question 4                     Question 9   Question 14


      Question 5                    Question 10   Question 15

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Section 4 – Knowledge Review Overview
Knowledge Review - Question                                  1
   Question 1
       A detailed log book is the proof-of experience
        documentation typically requested in many diving
        situations. Check those listed here.
   Answer 1
         A. for additional diver training
         B. by dive stores when buying diving
            equipment
         C. when diving at resorts or on boats

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Section 4-1 Knowledge Review
Knowledge Review - Question                                  2
   Question 2
       Explain how to prevent problems with
        contaminated air.
   Answer 2
        Have tanks filled only with pure, dry,
        filtered compressed air from a reputable air
        station.




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Section 4-2 Knowledge Review
Knowledge Review - Question                                   3
   Question 3
       State the two ways divers prevent problems with
        oxygen.
   Answer 3
         A. Never fill a tank with pure oxygen
         B. Do not use enriched air or a cylinder
                marked for enriched air unless you are
                properly trained.



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Section 4-3 Knowledge Review
Knowledge Review - Question                                  4
   Question 4
       Check each symptom related to nitrogen narcosis:
   Answer 4
         A. impaired coordination
         B. foolish behavior
         C. joint and limb pain




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Section 4-4 Knowledge Review
Knowledge Review - Question                                  5
   Question 5
       Check one. To prevent nitrogen narcosis:
   Answer 5
         A. skip breathe.
         B. equalize your air spaces early and often.
         C. avoid deep dives.




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Section 4-5 Knowledge Review
Knowledge Review - Question                                  6
   Question 6
       Check each symptom which may be related to
        decompression sickness:
   Answer 6
         A. foolish behavior
         B. moderate tingling
         C. cherry-red lips
         D. weakness and prolonged fatigue


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Section 4-6 Knowledge Review
Knowledge Review - Question                                  7
   Question 7
       Outline the first aid procedure for assisting
        someone with decompression illness.
   Answer 7
        Get the person into medical care.
        Prevent/treat for shock, administer oxygen,
        if necessary, CPR. Put diver in a left-side
        down position.



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Section 4-7 Knowledge Review
Knowledge Review - Question                                  8
   Question 8
       True or False. “When using either version of the
        Recreational Dive Planner or any dive computer,
        you must ascend at a rate that does not exceed
        18 metres/60 feet per minute.’’
   Answer 8
        True




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Section 4-8 Knowledge Review
Knowledge Review - Question                                  9
   Question 9
        Match the following by placing the correct letter in the
         blank.
           a. 18 metres/60 feet
           b. 40 metres/130 feet
           c. 30 metres/100 feet
   Answer 9
    A. Maximum depth limit for Open Water Divers.
    B. Maximum depth limit for divers with Deep Diver
       training.
    C. Maximum depth limit for divers with training and
       experience beyond the Open Water Diver level.


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Section 4-9 Knowledge Review
Knowledge Review - Question                                  10
   Question 10
       According to the Recreational Dive Planner, the
        no-decompression limit for 18 metres/60 feet is:
   Answer 10
         Metric – 56 minutes
         Imperial – 55 minutes




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Section 4-10 Knowledge Review
Knowledge Review - Question                                  11
   Question 11
       What is your pressure group after a dive to 12
        metres/42 feet for 24 minutes?
   Answer 11
         Metric – D Pressure Group
         Imperial – F Pressure Group




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Section 4-11 Knowledge Review
Knowledge Review - Question                                  12
   Question 12
       After a dive, you are in pressure group K. What
        will your new pressure group be after a 34 minute
        surface interval?
   Answer 12
        F Pressure Group




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Section 4-12 Knowledge Review
Knowledge Review - Question                                  13
   Question 13
       A diver in Pressure Group G plans a dive to 17
        metres/56 feet. What is the maximum allowable
        bottom time according to the Recreational Dive
        Planner?
   Answer 13
         34 minutes Maximum Allowable
         Bottom Time



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Section 4-13 Knowledge Review
Knowledge Review - Question                                  14
   Question 14
       Indicate the final pressure group upon surfacing
        after the following series of dives.
        First dive: 16 metres/50 feet for 23 minutes;
        surface interval: 1:30. Second dive: 10 metres/35
        feet for 46 minutes.
   Answer 14
         Final Pressure Group = M


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Section 4-14 Knowledge Review
Knowledge Review - Question                                    15
   Question 15
       Indicate the final pressure group upon surfacing
        after the following series of dives.
        First dive: 18 metres/60 feet for 15 minutes;
        surface interval: 1:00. Second dive: 12 metres/40
        feet for 30 minutes.
   Answer 15
         Final Pressure Group = K



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Section 4-15 Knowledge Review
Section 5 –             Knowledge Review


     Question 1                      Question 6   Question 11


      Question 2                     Question 7   Question 12


     Question 3                      Question 8   Question 13


      Question 4                     Question 9


      Question 5                    Question 10

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Section 5 – Knowledge Review Overview
Knowledge Review - Question                                  1
   Question 1
       Describe the three required situations in which a
        safety stop should be made.
   Answer 1
         A. A dive has been to 30 metres/100 feet
            or deeper.
         B. Pressure group at end of dive is within
            three pressure groups of the
            no-decompression limit.
         C. A dive is made up to any limit on the
            Recreational Dive Planner.
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Section 5-1 Knowledge Review
Knowledge Review - Question                                  2
   Question 2
       Check one. “If you accidentally exceed a
        no-decompression limit or an adjusted
        no-decompression limit by no more than 5 minutes,
        you should slowly ascend at a rate not faster than 18
        metres/60 feet per minute to 5 metres/15 feet and
        remain there for ________ minutes prior to surfacing.
        After reaching the surface, do not dive for at least
        ________ hours.”
   Answer 2
        A. 8 minutes, 6 hours B. 15 minutes, 24 hours
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Section 5-2 Knowledge Review
Knowledge Review - Question                                  3
   Question 3
       State the altitude above which the Recreational
        Dive Planners should not be used unless special
        procedures are followed.
   Answer 3
        300 metres/1000 feet




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Section 5-3 Knowledge Review
Knowledge Review - Question                                  4
   Question 4
       True or False. “To be reasonably assured you
        remain symptom free from decompression
        sickness when flying in a commercial jet airliner
        after diving, wait 12 hours.’’
   Answer 4
         True




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Section 5-4 Knowledge Review
Knowledge Review - Question                                  5
   Question 5
       Explain the procedure you must follow when
        planning a dive in cold water or under strenuous
        conditions using the Recreational Dive Planner.
   Answer 5
        Plan the dive as though the depth were 4
        metres/10 feet deeper than it actually is.




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Section 5-5 Knowledge Review
Knowledge Review - Question                                  6
   Question 6
       What is the minimum surface interval required
        between a dive to 18 metres/60 feet for 40
        minutes followed by a dive to 14 metres/50 feet
        for 60 minutes?
   Answer 6
         Metric – Minimum Surface Interval =
         0:28 (table) 0:29 (Wheel)
         Imperial – Minimum Surface Interval =
         1.12

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Section 5-6 Knowledge Review
Knowledge Review - Question                                  7
   Question 7
       What is the minimum surface interval
        required between a dive to 20 metres/70
        feet for 29 minutes followed by a dive to
        14 metres/50 feet for 39 minutes?
   Answer 7
    Metric – Minimum Surface Interval 0:00
    Imperial – Minimum Surface Interval 0:04


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Section 5-7 Knowledge Review
Knowledge Review - Question                                  8
   Question 8
       With reference to the compass heading shown in
        Figure 1, select the figure letter that indicates a
        reciprocal heading.
   Answer 8
        Reciprocal heading is shown by the
        figure letter: B




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Section 5-8 Knowledge Review
Knowledge Review - Question                                  9
   Question 9
       What is the purpose of the PADI System of
        continuing education?
   Answer 9
         Continuing education courses let you:
               1. Meet people.
               2. Go places.
               3. Do things.


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Section 5-9 Knowledge Review
Knowledge Review - Question                                  10
   Question 10
       What are the benefits of PADI Adventure Dives
        and the Advanced Open Water program?
   Answer 10
         1. Discover exciting new underwater
            activities.
         2. Additional supervised experience.
         3. Gain confidence.
         4. Develop additional diving skills.
         5. Have a chance to visit different dive
            locations.
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Section 5-10 Knowledge Review
Knowledge Review - Question                                  11
   Question 11
       State the purpose of PADI Discover Local Diving:
   Answer 11
         To provide a single, supervised open water
         experience to a new diving area.




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Section 5-11 Knowledge Review
Knowledge Review - Question                                  12
   Question 12
       When should you consider taking PADI Scuba
        Review?
   Answer 12
         If I go several months or longer without
         diving.




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Section 5-12 Knowledge Review
Knowledge Review - Question                     13
   Question 13
       What is the relationship between Adventure Dives,
        Advanced Open Water course dives and Specialty
        Diver course dives?
   Answer 13
        Adventure Dives can be credited toward the
        Advanced Open Water Diver course and/or
        corresponding Specialty Diver course.



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Section 5-13 Knowledge Review
Knowledge Review -               Question 3
   Buoyancy results from the weight of water volume
    displaced
   The heavier the water - the greater the buoyancy for
    a given displacement
   Salt water (due to dissolved salts) weighs more than
    fresh water.
   You’re more buoyant in
    salt water than in fresh

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    Question


Section 1-3 Knowledge Review - PLG
Knowledge Review -              Question 15
   The first stage reduces the high tank pressure to an
    intermediate pressure - (7-10 bar/100 to 150 psi)
    above surrounding water pressure
   The second stage reduces this intermediate pressure
    to the water pressure surrounding you
   Easy breathing is the most
    important feature when selecting
    a regulator

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    Question


Section 1-15 Knowledge Review - PLG
Knowledge Review - Question             6
   If you see a potentially aggressive animal - remain
    still and calm on the bottom
   Do not swim toward it - could trigger a defensive
    reaction
   Watch and see what it does
   Injuries generally result
    from frightening animals –
    causing them to react defensively

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    Question


Section 3-6 Knowledge Review - PLG
Knowledge Review - Question              8
   When planning to dive in an area for the first
    time - get an orientation to the local area
   The PADI Discover Local Diving experience is one
    way to do this
   A PADI professional introduces you to:
         A new dive environment
         Unique dive skills or procedures you need to know



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    Question


Section 3-8 Knowledge Review - PLG
Knowledge Review - Question            9
   A rip current - waves push water over a long
    obstruction such as a sand bar or reef
   Water can’t flow out on the bottom - funnels back to
    sea through a narrow opening
   You can usually recognize a rip current as a
    line of turbid, foamy water moving away from
    shore; it also disrupts the waves where it
    rushes seaward.

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    Question


Section 3-9 Knowledge Review - PLG
Knowledge Review - Question                 11
   Four steps to assisting another diver:
         Establish ample buoyancy (for both of you)
         Calm the diver - reestablish breathing control
         If necessary, assist the diver back to the
          boat or shore
   Always begin with buoyancy – reduce the
    immediate risk by assuring that neither you
    nor your buddy will sink

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    Question


Section 3-11 Knowledge Review - PLG
Knowledge Review - Question                 10
   Enter Table 1 at the top left corner
   Move across the row to the right until you find
    18 metres/60 feet depth allocation
   Move down the column under 18 metres/60 feet until
    you find the no-decompression limit (the black box)
   The no-decompression limit is:
    Metric - 56 minutes
    Imperial - 55 minutes

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    Question


Section 4-10 Knowledge Review – PLG Table
Knowledge Review - Question                      11
   Metric – Move across top row to the right and find 12 metres
         24 minutes doesn’t appear on Table 1, so follow the 12
          metres column down until you find 26 minutes
         Move horizontally along the row until you find
          pressure group D
   Imperial – 42 feet doesn’t appear on Table 1, so use the 50
    foot column
         Follow the 50 foot column down until you find 24 minutes
         Move horizontally along the row until you find
          pressure group F

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    Question


Section 4-11 Knowledge Review – PLG Table
Knowledge Review - Question                 12
   Move into Table 2 horizontally from pressure group K
   Your surface interval has been 34 minutes, continue
    horizontally until you find the box where 34 falls on
    or between the two times listed
   In this case 0:30 and 0:37
   Now move downward vertically to the bottom to find
    the new pressure group F



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    Question


Section 4-12 Knowledge Review – PLG Table
Knowledge Review - Question                 13
   Flip the RDP over and find pressure group G along the top
    row of Table 3
   Along the left side of Table 3, find 17 metres/56 feet - use
    the next greater depth 18 metres/60 feet
   Follow the row horizontally to the right until you are under
    pressure group G
   Where the row and column meet there are two numbers
         There is 34 minutes maximum allowable bottom
          time

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    Question


Section 4-13 Knowledge Review – PLG Table
Knowledge Review - Question                 14
   16 metres/50 feet for 23 minutes yields pressure group F
   Pressure group F and 1:30 minutes surface interval time
    yields pressure group B
   10 metres/35 feet for 46 minutes actual bottom time and
    add residual nitrogen time yields
         Metric: 20 RNT + 46 ABT = 66 minutes TBT
         Imperial: 19 RNT + 46 ABT = 65 minutes TBT
   Return to Table 1 – 10 metres/35 feet and TBT yields
    pressure group M

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    Question


Section 4-14 Knowledge Review – PLG Table
Knowledge Review - Question                        15
   Metric
      Table 1   18 metres for 15 min. bottom time yields pressure group C
      Table 2   1:00 surface interval time yields pressure group B
      Table 3   12 metres with 30 minutes actual bottom time
      Table 3   17 RNT + 30 ABT = 47 minutes TBT
      Table 1   12metres for 47 minutes TBT yields pressure group K
   Imperial
      Table 1   60 feet for 15 min. bottom time yields pressure group D
      Table 2   1:00 surface interval time yields pressure group B
      Table 3   40 feet with 30 minutes actual bottom time
      Table 3   16 RNT + 30 ABT = 46 minutes TBT
      Table 1   40 feet for 46 minutes TBT yields pressure group K


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    Question


Section 4-15 Knowledge Review – PLG Table
Knowledge Review - Question             5
   Getting cold or exercising a lot during a dive may
    result in more excess nitrogen in your body
   When planning a dive in cold water or under
    conditions that may be more strenuous than usual:
         Plan your dive as though the depth were
          4 metres/10 feet deeper than it actually is




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    Question


Section 5-5 Knowledge Review - PLG
Knowledge Review - Question                          6
   Metric
         Table 1 18 metres for 41 minutes yields pressure group P
         Table 3 14 metres for 60 minutes yields pressure group J
         Table 2 Intersection of pressure group P and pressure group J is
          0:28 minutes
   Imperial
         Table 1 60 feet for 40 minutes yields pressure group Q
         Table 3 50 feet for 60 minutes yields pressure group D
         Table 2 Intersection of pressure group Q and pressure group D is
          1:12 minutes


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    Question


Section 5-6 Knowledge Review – PLG Table
Knowledge Review - Question                     7
   Metric - Table 1 20 metres for 30 minutes bottom time yields
    pressure group M
         Table 3 14 metres for 39 minutes yields pressure group P
         Table 2 Intersection of pressure group M and pressure group
          P is 0:00 minimum surface interval time
   Imperial - Table 1 70 feet for 29 minutes bottom time yields
    pressure group N
         Table 3 50 feet for 39 minutes yields pressure group M
         Table 2 Intersection of pressure group N and pressure group
          M is 0:04 minimum surface interval time

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    Question


Section 5-7 Knowledge Review – PLG Table
Knowledge Review - Question                    10
   You meet more diving friends - visiting new dive sites
   You receive equipment counseling on gear
   You are presented with new challenges:
         Artistic challenges – Underwater Photography or
          Videography
         Skill challenges – UW Navigation, recovering lost objects
         Technical challenges – Deep Diving or Enriched Air Diving
   You gain confidence with diving in different conditions with
    additional supervision

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    Question


Section 5-10 Knowledge Review - PLG
Knowledge Review - Question                 13
   The Advanced Open Water program Adventure Dive
    can be the first dive of many PADI specialty courses
         A dry suit Adventure Dive (by itself or as part of
          an Advanced Open Water Diver course) can be
          the first dive of the dry suit specialty
         If you go straight into the Dry Suit Specialty
          course, the first dive from the course counts
          towards your Advanced Open Water certification

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    Question


Section 5-13 Knowledge Review - PLG
Knowledge Review -              Question 1
   Objects that sink
    - negative
   Objects that float
    - positive
   Objects that
    don’t sink or float
    - neutral




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    Question


 Section 1-1 Knowledge Review - PLG
Knowledge Review –               Question2
   One of the most
    important skills
    to learn is
    buoyancy control
   Proper buoyancy
    conserves energy
    and preserves
    the environment




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    Question


Section 1-2 Knowledge Review - PLG
Knowledge Review -              Question 4
   Water is weight
   Water weights
    more than air
   Every
    10metres/33 feet
    in water is an
    atmosphere




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    Question


Section 1-4 Knowledge Review - PLG
Knowledge Review -              Question 5
   Air cannot leave
    a sealed flexible
    container
   Air pressure,
    volume and
    density change
    proportionally
    with depth




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    Question


Section 1-5 Knowledge Review - PLG
    Knowledge Review -              Question 6
    Exhale through
     your nose into
     your mask to
     equalize the
     artificial air space




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       Question


    Section 1-6 Knowledge Review - PLG
Knowledge Review -              Question 7
   There are several
    ways to equalize
    your air spaces
    on descent
   If you cannot
    equalize don’t
    continue the dive




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    Question


Section 1-7 Knowledge Review - PLG
Knowledge Review -              Question 8
   Equalize your air
    spaces early and
    often
   If you cannot
    equalize - end
    the dive and dive
    another day




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    Question


Section 1-8 Knowledge Review - PLG
Knowledge Review -              Question 9
   Make sure there
    is water between
    your hood and
    your ears
   Pinch your nose
    and gently blow
   If you cannot
    clear your ears
    stop the dive



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    Question


Section 1-9 Knowledge Review - PLG
Knowledge Review -              Question 10
   Always keep an
    open air way
    while breathing
    compressed air
   Never hold your
    breath!




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    Question


Section 1-10 Knowledge Review - PLG
Knowledge Review -              Question 11
   Air trapped in
    your ear is the
    reverse of trying
    to equalize
   Don’t dive with a
    cold
   Don’t use
    decongestant
    medication



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    Question


Section 1-11 Knowledge Review - PLG
Knowledge Review -              Question 12
   Air you’ve put
    into air spaces
    while diving
    needs to come
    out on ascent
   Another reason
    to slowly ascend
    from your dive




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    Question


Section 1-12 Knowledge Review - PLG
Knowledge Review -              Question 13
   Choose a mask
    that encloses
    your nose – this
    way you’ll be
    able to blow air
    through your
    nose into your
    mask to equalize
    the air space



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    Question


Section 1-13 Knowledge Review - PLG
Knowledge Review -              Question 14
   If you keep a
    little air pressure
    in your tank –
    water and air
    moisture will not
    be able to enter
    and corrode your
    tank




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    Question


Section 1-14 Knowledge Review - PLG
Knowledge Review -              Question 1
   You need air and
    a mask for your
    eyes to focus –
    by the time light
    travels through
    water, glass, air
    to your eye,
    things appear
    larger and closer



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    Question


Section 2-1 Knowledge Review - PLG
Knowledge Review -              Question 2
   Water is more
    dense than air
   Sound travels
    fast underwater
   Sound hits both
    of your ears at
    the same time




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    Question


Section 2-2 Knowledge Review - PLG
Knowledge Review -              Question 3
   Have you ever
    been cold in a
    warm swimming
    pool?
   That’s because
    water takes away
    your heat faster
    than air.




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    Question


Section 2-3 Knowledge Review - PLG
Knowledge Review -              Question 4
   Shivering is the
    first sign of
    hypothermia –
    when you feel
    cold end the
    dive, dry off and
    get something
    warm on




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    Question


Section 2-4 Knowledge Review - PLG
Knowledge Review -              Question 5
   Scuba diving is
    supposed to be
    relaxing and
    enjoyable – slow
    down, stream
    line yourself and
    enjoy the
    scenery




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    Question


Section 2-5 Knowledge Review - PLG
Knowledge Review -              Question 6
   Compressed air
    is more dense
    than the air you
    breathe at the
    surface
   It requires more
    effort to breathe
    compressed air




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    Question


Section 2-6 Knowledge Review - PLG
Knowledge Review -              Question 7
   Like any sport
    you need to pace
    yourself when
    you dive - know
    your limits!




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    Question


Section 2-7 Knowledge Review - PLG
Knowledge Review -              Question 8
   When you get
    tired participating
    in any activity
    you stop, breathe
    deeply and rest
   Always think
    buoyancy!




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    Question


Section 2-8 Knowledge Review - PLG
Knowledge Review -              Question 9
   There’s always
    going to be a
    little water left in
    your mouth piece
    – be prepared to
    breathe slowly
    and cautiously
    past it




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    Question


Section 2-9 Knowledge Review - PLG
Knowledge Review -              Question 10
   There is a
    difference
    between tight
    and snug
   Don’t cut off your
    blood supply
   Hoods fit snug to
    allow water in to
    clear your ears



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    Question


Section 2-10 Knowledge Review - PLG
Knowledge Review -              Question 11
   You may have to
    release your
    weights in a
    hurry to maintain
    positive
    buoyancy – a
    quick-release
    mechanism is
    essential



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    Question


Section 2-11 Knowledge Review - PLG
Knowledge Review -              Question 12
   You carry an
    alternate air
    source for your
    buddy – make
    sure they can
    easily see it and
    know how to
    use it!




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    Question


Section 2-12 Knowledge Review - PLG
Knowledge Review -              Question 13
   An alternate air
    source should be
    highly visible and
    attached where
    your buddy can
    find it – the
    triangle




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    Question


Section 2-13 Knowledge Review - PLG
Knowledge Review - Question            14
   A dive knife is a
    valuable tool to
    take on a dive –
    use it to
    measure, get
    your buddies
    attention and to
    cut fishing line




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    Question


Section 2- 14 Knowledge Review - PLG
Knowledge Review - Question           15
   It’s not often you
    need help –
    when you do ask
    for it
   Make your hand
    signals big and
    bold




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    Question


Section 2-15 Knowledge Review - PLG
Knowledge Review - Question           16
   Think about
    checking for
    proper weighting
    when you dive at
    a different
    location or when
    using different
    dive equipment




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    Question


Section 2-16 Knowledge Review - PLG
Knowledge Review - Question           17
   As pilot goes
    through a pre-
    flight routine
    before each flight
    – you need to do
    a pre-dive safety
    check before
    each dive




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    Question


Section 2-17 Knowledge Review - PLG
Knowledge Review - Question          1
   If it has rained in
    your area
    recently – the
    visibility in the
    local water may
    not be all that
    great!




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    Question


Section 3-1 Knowledge Review - PLG
Knowledge Review - Question          2
   It’s hard to
    believe you can
    have difficulty
    diving in clear
    water – use an
    accurate depth
    gauge on every
    dive




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    Question


Section 3-2 Knowledge Review - PLG
Knowledge Review - Question          3
   Being caught in a
    current is like
    being caught in
    traffic – establish
    buoyancy, signal
    for help and just
    go with the flow!




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    Question


Section 3-3 Knowledge Review - PLG
Knowledge Review - Question          4
   Since there are
    more obstacles
    on the bottom
    than on the
    surface - water
    tends to travel
    slower near the
    bottom




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    Question


Section 3-4 Knowledge Review - PLG
Knowledge Review - Question          5
   You have more
    energy at the
    beginning of your
    dive - swim
    against the
    current at the
    beginning and let
    it take you home
    at the end of
    your dive


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    Question


Section 3-5 Knowledge Review - PLG
Knowledge Review - Question          7
   What would you
    do if a stranger
    tried to enter
    your house
    uninvited?




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    Question


Section 3-7 Knowledge Review - PLG
Knowledge Review - Question           10
   The best way to
    prevent diving
    problems –
    preplan a safe
    dive within your
    and your buddies
    diving limitations




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    Question


Section 3-10 Knowledge Review - PLG
Knowledge Review - Question           12
   Check your
    submersible
    pressure gauge
    regularly to
    prevent low on
    air situations
    from occurring




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    Question


Section 3-12 Knowledge Review - PLG
Knowledge Review - Question           13
   It’s unlikely to
    happen, but if
    you get
    entangled
    underwater –
    stop, breathe,
    think and then
    slowly and calmly
    untangle yourself



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    Question


Section 3-13 Knowledge Review - PLG
Knowledge Review - Question           14
   The primary
    concern for any
    unconscious
    person is to
    make sure they
    are breathing




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    Question


Section 3-14 Knowledge Review - PLG
Knowledge Review - Question           15
   Since it is difficult
    to tell what an
    unconscious
    diver is suffering
    - give oxygen if
    available




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     Question


Section 3-15 Knowledge Review - PLG
Knowledge Review - Question          1
   A log book can
    be compared to
    a passport – it
    details where
    and when you’ve
    gone diving




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    Question


Section 4-1 Knowledge Review - PLG
Knowledge Review - Question          2
   Test your air
    before going
    diving – if it
    smells or tastes
    bad don’t use it
   Always have your
    tank filled by a
    reputable air
    station



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    Question


Section 4-2 Knowledge Review - PLG
Knowledge Review - Question          3
   You need special
    training and
    equipment to
    dive with
    enriched air




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    Question


Section 4-3 Knowledge Review - PLG
Knowledge Review - Question          4
   Nitrogen narcosis
    should not affect
    you at this stage
    of your diving
    career – it is
    characterized by
    impaired
    judgment and
    coordination



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    Question


Section 4-4 Knowledge Review - PLG
Knowledge Review - Question          5
   Simply avoid
    diving deep to
    prevent nitrogen
    narcosis




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    Question


Section 4-5 Knowledge Review - PLG
Knowledge Review - Question          6
   There are several
    secondary factors
    that influence
    how your body
    absorbs and
    eliminates excess
    nitrogen




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    Question


Section 4-6 Knowledge Review - PLG
Knowledge Review - Question          7
   The dive medical
    community
    lumps DCS and
    lung
    overexpansion
    injury under the
    clinical term
    decompression
    illness (DCI)



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    Question


Section 4-7 Knowledge Review - PLG
Knowledge Review - Question          8
   The proper rate
    for ascending is
    no faster than 18
    metres/60 feet
    per minute – a
    rate slower is
    acceptable and
    appropriate




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    Question


Section 4-8 Knowledge Review - PLG
Knowledge Review - Question          9
   Dive within your
    limits – deep
    dives require
    special training




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    Question


Section 4-9 Knowledge Review - PLG
Knowledge Review - Question          1
   A safety stop is
    recommended
    after all dives (air
    supply and other
    considerations
    allowing)




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    Question


Section 5-1 Knowledge Review - PLG
Knowledge Review - Question          2
   You need to
    make an
    emergency
    decompression
    stop to allow
    your body to
    eliminate
    nitrogen




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    Question


Section 5-2 Knowledge Review - PLG
Knowledge Review - Question          3
   Dive tables are
    based on a dive
    ending at sea
    level – under less
    pressure at
    altitude, nitrogen
    comes out of
    solution more
    easily



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    Question


Section 5-3 Knowledge Review - PLG
Knowledge Review - Question          4
   When you fly after
    diving, you dive
    and return to
    normal
    atmospheric
    pressure, then
    expose yourself to
    further pressure
    reduction



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    Question


Section 5-4 Knowledge Review - PLG
Knowledge Review - Question          8
   Don’t let it
    intimidate you –
    there are two
    kinds of divers:
    those who have
    been lost, and
    those who won’t
    admit it




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    Question


Section 5-8 Knowledge Review - PLG
Knowledge Review - Question          9
   To get better at
    anything it takes
    practice – get out
    there and meet
    people, go
    places, dive and
    have fun!




    Return to
    Question


Section 5-9 Knowledge Review - PLG
Knowledge Review - Question           11
   When you travel
    to a new country
    you ask a travel
    guide for
    information –
    diving is no
    different!




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    Question


Section 5-11 Knowledge Review - PLG
Knowledge Review - Question           12
   A Scuba Review
    is a great way to
    refresh your
    memory
    regarding dive
    theory and skill –
    be prepared and
    dive safe




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    Question


Section 5-12 Knowledge Review - PLG
Knowledge Review - Question                         10
   Side 1 align the white triangle above the 18 metres/60 foot mark
   Hold the disk in place; with your finger find the 18 metres/60 foot
    depth curve and follow the curve to its NDL mark
   Holding the disk steady, move the pointer so the pointer centerline
    lines up with the NDL mark
   The yellow triangle should point to a number on the outside ring of the
    disk
   The no-decompression limit is:
    Metric - 56 minutes
    Imperial - 55 minutes



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    Question


Section 4-10 Knowledge Review – PLG Wheel
Knowledge Review - Question                               11
   Metric –
         Side 1 set the white triangle to 12 metres
         Move yellow pointer triangle to point to 24 minutes
         Read up the pointer centerline until it crosses 12 metre depth curve
         To the right of this intersection, find the pressure group whose arrow
          pierces 12 metres - pressure group D
   Imperial –
         Side 1 set the white triangle to 42 feet – in this case 45 feet
         Move yellow pointer triangle to point to 24 minutes
         Read up the pointer centerline until it crosses 45 foot depth curve
         To the right of this intersection, find the pressure group whose arrow
          pierces 45 feet - pressure group F
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    Question


Section 4-11 Knowledge Review – PLG Wheel
Knowledge Review - Question                      12
   Side 2 find the black dot with the yellow letter K inside
   Find the 34 minutes on the yellow ring
   Rotate the disk until the line corresponding to 34 minutes is
    directly above the black dot containing the letter K
   Put your finger on the K dot and trace the radial line toward the
    centre of the disk until it intersects the thick white curve labeled
    Surface Interval Curve
   Read off the upper edge of this curve - pressure group F




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    Question


Section 4-12 Knowledge Review – PLG Wheel
Knowledge Review - Question                      13
   Side 2 indicated G diver
   Side 1 find the letter G in the white p.g. index and the black
    arrow that goes with it
   Set the tip of this arrow so that it touches (not pierces) the
    17 metres/56 foot depth curve – in this case 18 metres/60 feet
   Hold the disk in place, rotate the pointer until the centerline is
    aligned with the NDL mark on the 18 metres/60 foot curve
   The yellow triangle at the end of the pointer should point to
    34 minutes maximum allowable bottom time


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    Question


Section 4-13 Knowledge Review – PLG Wheel
    Knowledge Review - Question                               14
    Side 1 set the white triangle to 16 metres/ 50 feet
    Move yellow pointer triangle to 23 minutes
    Read up the pointer centerline until it crosses 16 metres/ 50 feet – pressure group F
    Side 2 rotate disk until 1:30 minutes lines directly above the black dot containing the
     letter F
    Trace the radial line up and read the upper edge of the thick white curve – pressure
     group B
    Side 1 find the letter B in the white p.g. index
    Set the tip of this arrow so that it touches the 10 metres/ 35 foot depth curve
    Move the yellow pointer triangle to 46 minutes
    Read up the pointer centerline until it crosses the 10 metres/ 35 foot depth curve
    Find the pressure group whose arrow pierces 10 metres/ 35 feet –
     pressure group M

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      Question


    Section 4-14 Knowledge Review – PLG Wheel
    Knowledge Review - Question                               15
    Side 1 set the white triangle to 18 metres/ 60 feet
    Move yellow pointer triangle to 15 minutes
    Read up the pointer centerline until it crosses 18 metres/ 60 feet – pressure group E
    Side 2 rotate disk until 1:00 minutes lines directly above the black dot containing the
     letter E
    Trace the radial line up and read the upper edge of the thick white curve – pressure
     group B
    Side 1 find the letter B in the white p.g. index
    Set the tip of this arrow so that it touches the 12 metres/ 40 foot depth curve
    Move the yellow pointer triangle to 30 minutes
    Read up the pointer centerline until it crosses the 12 metres/ 40 foot depth curve
    Find the pressure groups whose arrow pierces 12 metres/ 40 feet –
     pressure group K

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      Question


    Section 4-15 Knowledge Review – PLG Wheel
    Knowledge Review - Question                               6
    Side 1 at the end of the first dive, you are a P diver
    Find the NDL in the 14 metres/ 50 foot depth curve
    Align the 60 minute mark along the yellow outer ring with the NDL mark
    Read backwards up to the 14 metres/ 50 foot depth curve to the white p.g. index
         Metric – black arrow touches J pressure group at 14 metre depth
         Imperial – black arrow touches D pressure group at 50 foot depth
    Side 2 find the letter P in black dot
    Follow the radial line up toward the center of the disk until you reach the cross-
     hatch
    Move the disk until the surface interval curve just crosses this cross-hatch
         Metric :29 minutes minimum surface interval
         Imperial 1:12 minutes minimum surface interval


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      Question


    Section 5-6 Knowledge Review – PLG Wheel
    Knowledge Review - Question                                       7
    Side 1 at the end of the first dive, you are
         Metric M pressure group
         Imperial N pressure group
    Find the NDL in the 14 metres/ 50 foot depth curve
    Align the 39 minute mark along the yellow outer ring with the NDL mark
    Read backwards up to the 14 metres/ 50 foot depth curve to the white p.g. index
         Metric – black arrow touches Q pressure group at 14 metre depth
         Imperial – black arrow touches M pressure group at 50 foot depth
    Side 2 find the letter
         Metric M in black dot
         Imperial N in black dot
    Follow the radial line up toward the center of the disk until you reach the cross-hatch
    Move the disk until the surface interval curve just crosses this cross-hatch
         Metric :0:00 minutes minimum surface interval
         Imperial 0:04 minutes minimum surface interval
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      Question


    Section 5-7 Knowledge Review – PLG Wheel

				
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