Weather, Part 107 certification 2026

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Progress: 24% (23/94)

Learning progress ?

1. What are the characteristics of stable air?Not learned 2. What are characteristics of a moist, unstable air mass?Not learned 3. An air mass moving inland from the coast in winter is likely to result inNot learned 4. (Refer to Figure 12.) The wind direction and velocity at KJFK is fromNot learned 5. (Refer to Figure 12.) What are the current conditions for Chicago Midway Airport (KMDW)?Not learned 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?Not learned 7. While operating around buildings, the Remote Pilot in Command should be aware of the creation of wind gusts that:Not learned 8. Every physical process of weather is accompanied by, or is the result of, aNot learned 9. What causes variations in altimeter settings between weather reporting points?Not learned 10. A temperature inversion would most likely result in which weather condition?Not learned 11. The most frequent type of ground or surface-based temperature inversion is that which is produced byNot learned 12. Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?Not learned 13. What are the standard temperature and pressure values for sea level?Not learned 14. The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due toNot learned 15. What is meant by the term "dewpoint"?Not learned 16. The amount of water vapor which air can hold depends on theNot learned 17. Clouds, fog, or dew will always form whenNot learned 18. What are the processes by which moisture is added to unsaturated air?Not learned 19. Which conditions result in the formation of frost?Not learned 20. The presence of ice pellets at the surface is evidence that thereNot learned 21. What measurement can be used to determine the stability of the atmosphere?Not learned 22. What would decrease the stability of an air mass?Not learned 23. What is a characteristic of stable air?Not learned 24. When warm, moist, stable air flows upslope, itNot learned 25. If an unstable air mass is forced upward, what type clouds can be expected?Not learned 26. What feature is associated with a temperature inversion?Not learned 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?Not learned 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?Not learned 29. What are characteristics of a moist, unstable air mass?Not learned 30. What are characteristics of unstable air?Not learned 31. A stable air mass is most likely to have which characteristic?Not learned 32. The suffix "nimbus," used in naming clouds, meansNot learned 33. Clouds are divided into four families according to theirNot learned 34. An almond or lens-shaped cloud which appears stationary, but which may contain winds of 50 knots or more, is referred to asNot learned 35. Crests of standing mountain waves may be marked by stationary, lens-shaped clouds known asNot learned 36. What clouds have the greatest turbulence?Not learned 37. What cloud types would indicate convective turbulence?Not learned 38. The boundary between two different air masses is referred to as aNot learned 39. One of the most easily recognized discontinuities across a front isNot learned 40. One weather phenomenon which will always occur when flying across a front is a change in theNot learned 41. Steady precipitation preceding a front is an indication ofNot learned 42. Possible mountain wave turbulence could be anticipated when winds of 40 knots or greater blowNot learned 43. Where does wind shear occur?Not learned 44. When may hazardous wind shear be expected?Not learned 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 leastNot learned 46. One in-flight condition necessary for structural icing to form isNot learned 47. In which environment is aircraft structural ice most likely to have the highest accumulation rate?Not learned 48. The conditions necessary for the formation of cumulonimbus clouds are a lifting action andNot learned 49. What feature is normally associated with the cumulus stage of a thunderstorm?Not learned 50. Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?Not learned 51. What conditions are necessary for the formation of thunderstorms?Not learned 52. During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?Not learned 53. Thunderstorms reach their greatest intensity during theNot learned 54. Thunderstorms which generally produce the most intense hazard to aircraft areNot learned 55. A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is a known as aNot learned 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?Not learned 57. What situation is most conducive to the formation of radiation fog?Not learned 58. If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 °F, what type weather is most likely to develop?Not learned 59. In which situation is advection fog most likely to form?Not learned 60. What types of fog depend upon wind in order to exist?Not learned 61. Low-level turbulence can occur and icing can become hazardous in which type of fog?Not learned 62. Which weather phenomenon is always associated with a thunderstorm?Not learned 63. (Refer to Figure 12.) Which of the reporting stations have VFR weather?Not learned 64. For aviation purposes, ceiling is defined as the height above the Earth's surface of theNot learned 65. (Refer to Figure 12.) What are the wind conditions at Wink, Texas (KINK)?Not learned 66. (Refer to Figure 12.) The remarks section for KMDW has RAB35 listed. This entry meansNot learned 67. (Refer to Figure 15.) What is the valid period for the TAF for KMEM?Not learned 68. (Refer to Figure 15.) In the TAF for KMEM, what does "SHRA" stand for?Not learned 69. (Refer to Figure 15.) Between 1000Z and 1200Z the visibility at KMEM is forecast to be?Not learned 70. (Refer to Figure 15.) What is the forecast wind for KMEM from 1600Z until the end of the forecast?Not learned 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 fromNot learned 72. (Refer to Figure 15.) In the TAF from KOKC, the clear sky becomesNot learned 73. (Refer to Figure 15.) During the time period from 0600Z to 0800Z, what visibility is forecast for KOKC?Not learned 74. (Refer to Figure 18.) Of what value is the Weather Depiction Chart to the pilot?Not learned 75. (Refer to Figure 19.) How are Significant Weather Prognostic Charts best used by a pilot?Not learned 76. (Refer to Figure 19.) Interpret the weather symbol depicted in Utah on the 12-hour Significant Weather Prognostic Chart.Not learned 77. (Refer to Figure 19.) What weather is forecast for the Florida area just ahead of the stationary front during the first 12 hours?Not learned 78. (Refer to Figure 19.) The enclosed shaded area associated with the low pressure system over northern Utah is forecast to haveNot learned 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?Not learned