SAMRA 15-4
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Questions and Answers

What causes wind to decrease and back at night?

  • Temperature inversion
  • Barometric pressure changes
  • Friction and cooling (correct)
  • Ocean currents
  • What does METAR CCA indicate?

  • Cautionary airspace
  • Correct report (correct)
  • Complete report
  • Current conditions alert
  • Under which conditions is icing on an airfoil considered most severe?

  • Thin wing and speed 250 KT (correct)
  • Thick wing and low speed
  • Medium wing and moderate speed
  • No wing and stall speed
  • Which of the following can weather radar detect? (Select all that apply)

    <p>Snow</p> Signup and view all the answers

    What is a determination of MSL?

    <p>Affects the air column weight above ground</p> Signup and view all the answers

    What is the purpose of a prognostic chart?

    <p>For special time at future weather</p> Signup and view all the answers

    How does an Inertial Navigation System (INS) determine an aircraft's position?

    <p>Acceleration and time</p> Signup and view all the answers

    How is an oceanic clearance governed?

    <p>Require subsequent clearance </p> Signup and view all the answers

    How is the preferred IFR route determined?

    <p>Each preferred route starts or ends with NAV aids</p> Signup and view all the answers

    What does IFR outlook contain?

    <p>IFR ceiling, visibility, rain and mist</p> Signup and view all the answers

    What happens when warm air moves over a cold surface?

    <p>Smooth flight at low level</p> Signup and view all the answers

    What will the weather be when 30 KT isotachs are spaced closer than 90 NM ?

    <p>CAT forms on cold fronts or low pressure systems</p> Signup and view all the answers

    Study Notes

    Wind and Weather Phenomena

    • Surface wind decreases and backs at night due to friction and cooling effects.
    • Weather radar can detect multiple phenomena including hail, snow, and volcanic ash; specifically, options A, B, and D are correct for detection capabilities.

    Aviation Meteorology Terms

    • METAR CCA indicates a Correct report in aviation weather.
    • Prognostic charts forecast weather for a specific future time.

    Flight Dynamics and Conditions

    • Icing is most severe on an airfoil when conditions involve a thin wing and a speed of 250 knots.
    • Warm air over a cold surface leads to smooth flight conditions at low altitudes.
    • Each preferred IFR route typically starts or ends with navigation aids for accurate guidance.
    • Inertial Navigation System (INS) determines aircraft position based on acceleration and time measurements.

    Clearance and Reporting

    • Oceanic clearance requires the longest route to be evaluated, along with any subsequent clearance needed.
    • Pilot Reports (PIREPs) are essential for providing information about atmospheric conditions; options C, E, and G are relevant.

    Visibility and Weather Conditions

    • IFR outlook affected by ceiling and visibility typically arises from conditions like rain and mist.
    • Isotach spacing for 30 knots within 90 nautical miles indicates potential for significant weather variability.

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    Description

    Test your knowledge on wind and weather phenomena as they relate to aviation meteorology. This quiz covers topics such as METAR reports, weather detection capabilities, and the effects of surface wind. Perfect for students and professionals in the field of aviation and meteorology.

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