Concept Animations Multiple Choice Questions:-
1.When Doppler radar displays _________, a signature of a rotating mesocyclone (or tornado) may appear on the radar screen as _____.
precipitation intensity; a bright green color
precipitation intensity; bright green directly next to bright red
total rainfall; hail
radial velocity; heavy rain
radial velocity; bright green direction next to bright red
2.The highest precipitation intensity appears as what color on a Doppler radar map?
3.Doppler radars rely on signals returning to the station after bouncing off of precipitation.
4.Sheet lightning typically occurs _____.
when wind moves the ionized channel between each return stroke
when a lightning flash occurs within a cloud or is obscured by intervening clouds
with cloud-to-ground lightning that does not provide rain
as a dart leader moving toward the ground deviates from the original path
on a hot, summer night when the overhead sky is clear
5.Typically, a lightning flash will have _____.
one bright return stroke carrying a negative charge upward into the cloud
one bright stepped ladder carrying a negative charge upward into the cloud
one return stroke followed by a stepped leader
one bright stepped leader carrying a positive charge upward into the cloud
a stepped leader followed by at least one return stroke
6.Negative lightning has the potential to cause more damage than positive lightning because it generates a much higher current level and its flash lasts for a longer duration.