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Weather
- 1. What are the characteristics of stable air?
- 2. What are characteristics of a moist, unstable air mass?
- 3. An air mass moving inland from the coast in winter is likely to result in
- 4. (Refer to Figure 12.) The wind direction and velocity at KJFK is from
- 5. (Refer to Figure 12.) What are the current conditions for Chicago Midway Airport (KMDW)?
- 6. You have received an outlook briefing from flight service through 1800wxbrief.com. The briefing indicates you can expect a low-level temperature inversion with high relative humidity. What weather conditions would you expect when operating within the inversion?
- 7. While operating around buildings, the Remote Pilot in Command should be aware of the creation of wind gusts that:
- 8. Every physical process of weather is accompanied by, or is the result of, a
- 9. What causes variations in altimeter settings between weather reporting points?
- 10. A temperature inversion would most likely result in which weather condition?
- 11. The most frequent type of ground or surface-based temperature inversion is that which is produced by
- 12. Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
- 13. What are the standard temperature and pressure values for sea level?
- 14. The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due to
- 15. What is meant by the term "dewpoint"?
- 16. The amount of water vapor which air can hold depends on the
- 17. Clouds, fog, or dew will always form when
- 18. What are the processes by which moisture is added to unsaturated air?
- 19. Which conditions result in the formation of frost?
- 20. The presence of ice pellets at the surface is evidence that there
- 21. What measurement can be used to determine the stability of the atmosphere?
- 22. What would decrease the stability of an air mass?
- 23. What is a characteristic of stable air?
- 24. When warm, moist, stable air flows upslope, it
- 25. If an unstable air mass is forced upward, what type clouds can be expected?
- 26. What feature is associated with a temperature inversion?
- 27. 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?
- 28. At approximately what altitude above the surface would the pilot expect the base of cumuliform clouds if the surface air temperature is 82 °F and the dewpoint is 38 °F?
- 29. What are characteristics of a moist, unstable air mass?
- 30. What are characteristics of unstable air?
- 31. A stable air mass is most likely to have which characteristic?
- 32. The suffix "nimbus," used in naming clouds, means
- 33. Clouds are divided into four families according to their
- 34. An almond or lens-shaped cloud which appears stationary, but which may contain winds of 50 knots or more, is referred to as
- 35. Crests of standing mountain waves may be marked by stationary, lens-shaped clouds known as
- 36. What clouds have the greatest turbulence?
- 37. What cloud types would indicate convective turbulence?
- 38. The boundary between two different air masses is referred to as a
- 39. One of the most easily recognized discontinuities across a front is
- 40. One weather phenomenon which will always occur when flying across a front is a change in the
- 41. Steady precipitation preceding a front is an indication of
- 42. Possible mountain wave turbulence could be anticipated when winds of 40 knots or greater blow
- 43. Where does wind shear occur?
- 44. When may hazardous wind shear be expected?
- 45. A pilot can expect a wind-shear zone in a temperature inversion whenever the windspeed at 2,000 to 4,000 feet above the surface is at least
- 46. One in-flight condition necessary for structural icing to form is
- 47. In which environment is aircraft structural ice most likely to have the highest accumulation rate?
- 48. The conditions necessary for the formation of cumulonimbus clouds are a lifting action and
- 49. What feature is normally associated with the cumulus stage of a thunderstorm?
- 50. Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
- 51. What conditions are necessary for the formation of thunderstorms?
- 52. During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
- 53. Thunderstorms reach their greatest intensity during the
- 54. Thunderstorms which generally produce the most intense hazard to aircraft are
- 55. A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is a known as a
- 56. If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenon might be expected on the landing approach?
- 57. What situation is most conducive to the formation of radiation fog?
- 58. If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 °F, what type weather is most likely to develop?
- 59. In which situation is advection fog most likely to form?
- 60. What types of fog depend upon wind in order to exist?
- 61. Low-level turbulence can occur and icing can become hazardous in which type of fog?
- 62. Which weather phenomenon is always associated with a thunderstorm?
- 63. (Refer to Figure 12.) Which of the reporting stations have VFR weather?
- 64. For aviation purposes, ceiling is defined as the height above the Earth's surface of the
- 65. (Refer to Figure 12.) What are the wind conditions at Wink, Texas (KINK)?
- 66. (Refer to Figure 12.) The remarks section for KMDW has RAB35 listed. This entry means
- 67. (Refer to Figure 15.) What is the valid period for the TAF for KMEM?
- 68. (Refer to Figure 15.) In the TAF for KMEM, what does "SHRA" stand for?
- 69. (Refer to Figure 15.) Between 1000Z and 1200Z the visibility at KMEM is forecast to be?
- 70. (Refer to Figure 15.) What is the forecast wind for KMEM from 1600Z until the end of the forecast?
- 71. (Refer to Figure 15.) In the TAF from KOKC, the "FM (FROM) Group" is forecast for the hours from 1600Z to 2200Z with the wind from
- 72. (Refer to Figure 15.) In the TAF from KOKC, the clear sky becomes
- 73. (Refer to Figure 15.) During the time period from 0600Z to 0800Z, what visibility is forecast for KOKC?
- 74. (Refer to Figure 18.) Of what value is the Weather Depiction Chart to the pilot?
- 75. (Refer to Figure 19.) How are Significant Weather Prognostic Charts best used by a pilot?
- 76. (Refer to Figure 19.) Interpret the weather symbol depicted in Utah on the 12-hour Significant Weather Prognostic Chart.
- 77. (Refer to Figure 19.) What weather is forecast for the Florida area just ahead of the stationary front during the first 12 hours?
- 78. (Refer to Figure 19.) The enclosed shaded area associated with the low pressure system over northern Utah is forecast to have
- 79. (Refer to Figure 19.) At what altitude is the freezing level over the middle of Florida on the 12-hour Significant Weather Prognostic Chart?