PPL - WEATHER

• When requesting weather information for the following morning, a pilot should request


  an outlook briefing.
• Low-level turbulence can occur and icing can become hazardous in which type of fog?

  Steam fog
• What would decrease the stability of an air mass?

  warming from below
• You plan to phone a weather briefing facility for preflight weather information. You should

  identify yourself as a pilot.
• What should pilots state when telephoning a weather briefing facility for preflight weather information?

  The intended route of flight and destination.
• Possible mountain wave turbulence could be anticipated when winds of 40 knots or greater blow

  across a mountain ridge, and the air is stable.
• The presence of ice pellets at the surface is evidence that there


  is a temperature inversion with freezing rain at a higher altitude
• You're flying on a cross country and your weather briefer tells you of an approaching warm from with steady precipitation. What can you expect?

  Stratiform clouds with little to no turbulence
• What are the processes by which moisture is added to unsaturated air?

  Evaporation and Sublimation
• In which environment is aircraft structural ice most likely to have the highest accumulation rate?

  Freezing rain
• What are characteristics of unstable air?

  turbulence and good surface visibility
• A stable air mass is most likely to have which characteristic?

  Smooth air
• Between 1000Z and 1200Z the visibility at KMEM is forecasted to be


  3 SM
• The most frequent type of ground or surface-based temperature inversion is that which is produced by

  terrestrial radiation on a clear, relatively still night.
• What is the approximate base of the cumulus clouds if the surface air temperature at 1,000 feet MSL is 70 °F and the dewpoint is 48 °F?

  6000 feet MSL.
•  What are characteristics of a moist, unstable air mass?


  Cumuliform clouds and showery precipitation.
• What cloud types would indicate convective turbulence?

  Towering cumulus clouds
• What feature is associated with a temperature inversion?

  A stable layer of air.