Jeppesen Private Pilot Stage II Exam questions with correct answers

What is the major motivating force behind atmospheric circulation? Answer Uneven heating of the earth's surface What processes result in moisture being added to unsaturated air? Answer Evaporation & Sublimation What weather conditions can you expect with a small or converging temperature/dewpoint spread? Answer Fog or low clouds With the approach and passage of a frontal system in the United States, what pressure and wind direction changes take place? Answer The pressure falls as the front approaches and rises after its passage, while the wind direction shifts to the right after frontal passage. What conditions are necessary for the formation of thunderstorms? Answer Unstable air, a lifting force, and high moisture levels. Thunderstorms and squall lines are generally associated with what type of front? Answer Fast-moving cold Select the true statement regarding wind shear. Answer A microburst - one of the most dangerous sources of wind shear - is a downdraft associated with convective activity.