RCAC Practice Exam (Meterology) V1

19 Questions | Total Attempts: 299

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RCAC Practice Exam (Meterology) V1

Air CadetsPractice ExamMeterology


Questions and Answers
  • 1. 
    Relative humidity is the
    • A. 

      Amount of moisture present in the air.

    • B. 

      Weight of water present in the air.

    • C. 

      Amount of moisture present in the air compared to the amount the air could hold at that temperature and pressure.

    • D. 

      Temperature to which the air must be lowered to bring about saturation.

  • 2. 
    The cloud type usually associated with steady rain is
    • A. 

      Altostratus.

    • B. 

      Altocumulus.

    • C. 

      Stratocumulus.

    • D. 

      Nimbostratus.

  • 3. 
    Clouds form when moist warm air overruns cold air because the warm air
    • A. 

      Is cooled by the cold air underneath.

    • B. 

      Is cooled by the surrounding cold air aloft.

    • C. 

      Becomes unstable as a result of cooling from below.

    • D. 

      Cools as a result of expansion as it rises.

  • 4. 
    Advection fog forms when
    • A. 

      Moist air moves from a warm surface to a colder surface.

    • B. 

      The cold ground cools the air in contact with it at night

    • C. 

      Moist air is influenced by orographic effect.

    • D. 

      Moist cool air moves from a cold surface to a warm surface.

  • 5. 
    In the northern hemisphere, the winds blow
    • A. 

      Clockwise around high and low pressure areas.

    • B. 

      Counter-clockwise around high and low pressure areas.

    • C. 

      Clockwise around a high pressure area and counter-clockwise around a low pressure area.

    • D. 

      Counter-clockwise around a high pressure area and clockwise around a low pressure area.

  • 6. 
    During a descent from 2,000 feet AGL to the surface, you will usually find that the wind
    • A. 

      Veers and increases.

    • B. 

      Backs and increases.

    • C. 

      Backs and decreases.

    • D. 

      Veers and decreases.

  • 7. 
    The diurnal change of surface wind velocity is such that during the day the surface wind will usually
    • A. 

      Veer and increase in speed.

    • B. 

      Veer and decrease in speed.

    • C. 

      Back and increase in speed.

    • D. 

      Back and decrease in speed.

  • 8. 
    The conditions required for the formation of thunderstorms are
    • A. 

      Moist air, high temperature, and an inversion.

    • B. 

      Stratus cloud, high humidity and a lifting force.

    • C. 

      Unstable air, high humidity and a lifting force.

    • D. 

      A mixing of two different air masses.

  • 9. 
    A condition when the air temperature aloft is higher than that of the lower atmosphere is generally referred to as
    • A. 

      A low pressure area.

    • B. 

      An inversion.

    • C. 

      A reverse temperature condition.

    • D. 

      An inverse convection condition.

  • 10. 
    Air masses that are being cooled from below are characterized by
    • A. 

      Strong winds, cumulus cloud, good visibility.

    • B. 

      Uniform temperature, good visibility.

    • C. 

      Continuous rain, freezing temperature.

    • D. 

      Fog, poor visibility and layer cloud.

  • 11. 
    A front is a
    • A. 

      Narrow zone of fog between a cyclone and an anticyclone.

    • B. 

      Line of thunderstorms.

    • C. 

      Narrow transition zone between two air masses.

    • D. 

      Mass of layer cloud which is very thick and which covers a wide area.

  • 12. 
    During the passage of a cold front
    • A. 

      Warm air is compressed as cold air rides over it.

    • B. 

      Temperature rises owing to increased pressure.

    • C. 

      Fog will always form from the interaction of warm and cold air.

    • D. 

      Warm air is lifted as colder air pushes under it.

  • 13. 
    The following sequence of clouds is observed at an airport: cirrus, altostratus, nimbostratus. The observer should expect
    • A. 

      The passage of a cold front.

    • B. 

      Anticyclonic weather.

    • C. 

      The passage of a warm front.

    • D. 

      Clearing skies and a decrease in temperature.

  • 14. 
    Cloud heights in Canadian Aerodrome Forecasts (TAF) are given in
    • A. 

      Feet AGL.

    • B. 

      Feet ASL.

    • C. 

      Metres AGL.

    • D. 

      Metres ASL.

  • 15. 
    Failure to adjust the altimeter when flying from an area of low pressure to an area of higher pressure will result in the altimeter indicating
    • A. 

      Too high.

    • B. 

      Too low.

    • C. 

      The pressure altitude.

    • D. 

      The true altitude.

  • 16. 
    A METAR describes the weather
    • A. 

      Expected at a station at a given time.

    • B. 

      Expected at a station over a 12 hour period.

    • C. 

      Observed at a station at the time of the report.

    • D. 

      Observed at a station during the previous day.

  • 17. 
    METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224In this report, the visibility is;
    • A. 

      4 miles.

    • B. 

      13 miles.

    • C. 

      5 miles.

    • D. 

      6 miles.

  • 18. 
    METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224In this weather report, the wind speed reported at YEG is;
    • A. 

      300 degrees at 8 kts.

    • B. 

      070 degrees at 70 kts.

    • C. 

      180 degrees at 5 kts.

    • D. 

      050 degrees at 6 kts.

  • 19. 
    METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224 In this weather report, FEW 013 means;
    • A. 

      3/8 to 5/8 of the sky covered in clouds height of the layer 13'.

    • B. 

      5/8 to less than 8/8 of the sky covered in cloud, height of the layer is 13,000'

    • C. 

      Sky Clear

    • D. 

      Trace to 2/8 of the sky covered in cloud, height of the layer 1,300'