Conditions necessary to turn an ordinary thunderstorm into a tornado-spinning monster include _______________.
A)a low-altitude,northerly flow of warm,humid,tropical air from the Gulf of Mexico
B)a cold,dry air mass moving down from Canada or out of the Rocky Mountains at 50 mph
C)jet-stream winds racing east at speeds in excess of 150 mph
D)All of the choices are correct.
E)a low-altitude,northerly flow of warm,humid,tropical air from the Gulf of Mexico and a cold,dry air mass moving down from Canada or out of the Rocky Mountains at 50 mph only

Question

Conditions necessary to turn an ordinary thunderstorm into a tornado-spinning monster include _______________.
A)a low-altitude,northerly flow of warm,humid,tropical air from the Gulf of Mexico
B)a cold,dry air mass moving down from Canada or out of the Rocky Mountains at > 50 mph
C)jet-stream winds racing east at speeds in excess of 150 mph
D)All of the choices are correct.
E)a low-altitude,northerly flow of warm,humid,tropical air from the Gulf of Mexico and a cold,dry air mass moving down from Canada or out of the Rocky Mountains at > 50 mph only

Quizplus · Accepted Answer

All of the choices listed are conditions that can contribute to the development of a tornado. Warm, humid air provides the necessary moisture, cold dry air contributes to atmospheric instability, and strong jet-stream winds can help in the formation of the supercell thunderstorms that often spawn tornadoes.

Conditions Necessary to Turn an Ordinary Thunderstorm into a Tornado-Spinning