Question 9
Domain 2: FAA Part 107 WeatherWhat is a microburst?
Correct answer: A
Explanation
A microburst is a small-scale, powerful downdraft that hits the ground and spreads outward. It is defined by a "sudden, intense downdraft with horizontal outflow," which creates strong, divergent winds near the surface.
Why each option is right or wrong
A. A sudden, intense downdraft with horizontal outflow
A microburst is defined in meteorology as a localized downdraft from a thunderstorm that descends rapidly and, on reaching the surface, spreads outward in all directions. The key diagnostic feature is the combination of a very strong downward air current followed by divergent horizontal winds at ground level, which is why the answer describing a sudden, intense downdraft with horizontal outflow is the best match.
B. A small tornado touching down briefly
C. A brief period of heavy rain
D. A miniature cold front