Aviation Weather (PPL Questions) and Answers Already Passed

Aviation Weather (PPL Questions) and Answers Already Passed Thun derstorms which generally produce the most intense hazard to aircraft are? ✔✔Squall line thunderstorms What are the processes by which moisture is added to unsaturated air? ✔✔Evaporation and sublimation Why is frost considered hazardous to flight? ✔✔Frost spoils the smooth flow of air over the wings, and therefore decreases the lift capability of an aircraft Clouds, fog, or dew will always form when ✔✔Water vapor condenses Clouds are divided into four families according to their ✔✔Height range Crests of standing mountain waves may be marked by stationary, lens -shaped clouds known as? ✔✔standing lenticular clouds which conditions result in the formation of frost? ✔✔the temperature of the collecting surface is at or below the dewpoint of the adja cent air and the dewpoint is below freezing the temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing ✔✔stratiform clouds a pilot can expect a wind -shear zone in a temperature inversion w henever the windspeed at 2,000 -4,000 feet above the surface is at least ✔✔25 knots When may hazardous wind shear be expected? ✔✔in areas of low -level temperature inversion, frontal zones, and clear air turbulence low-level turbulence can occur and icing can become hazardous in which type of fog? ✔✔steam fog steady precipitation preceding a front is an indication of? ✔✔stratiform clouds with little or no turbulence where does wind shear occur? ✔✔at all altitudes, in all directions