Aviation Weather Exam 2 || With Complete Solutions (100% Correct)

Aviation Weather Exam 2 || With Complete Solutions (100% Correct) Aviation Weather Exam 2 || With Complete Solutions (100% Correct) What are the characteristics of the flow of air around high pressure systems? - ANSWER - Outward Downward Clockwise What are the characteristics of the flow of air around low pressure systems? - ANSWER - Inward Upward Counterclockwise What is a Trough Line? - ANSWER - An elongated area of low pressure. (Air rises in this area) (It is conducive to cloudiness and precipitation) What is a Ridge Line? - ANSWER - An elongated area of high pressure. (Air moving out of a high depletes the quantity of air - therefore these are areas of descending air.) (Descending air favors dissipation of cloudiness) What are isobars? - ANSWER - Lines on a weather chart which connect areas of equal or constant barometric pressure. If isobars are close together on a weather chart or a constant pressure chart what does this mean? - ANSWER - This shows the steepness of the pressure gradient. • Close = Steep Pressure Gradient = High Wind Speeds • Spaced Out = Shallow PG = Low Wind Speeds What causes the winds aloft to flow parallel to the isobars? - ANSWER - Coriolis Force What causes surface winds to generally flow across the isobars at an angle? - ANSWER - Surface Friction What is the effect of stable air on clouds? - ANSWER - Stratiform What is the effect of unstable air on clouds? - ANSWER - Cumuliform What is the effect of stable air on turbulence? - ANSWER - Smooth What is the effect of unstable air on turbulence? - ANSWER - Rough What is the effect of stable air on precipitation? - ANSWER - Steady