Tornadoes are caused by severe thunderstorms, when warm, moist air collides with cold, dry air, creating instability in the atmosphere. This can lead to the formation of a rotating column of air, or vortex, which is fueled by the temperature and wind speed differences between the ground and the atmosphere. If the conditions are right, this rotating column can touch down to the ground, forming a tornado.
MCQs
1. Which type of cloud is commonly associated with tornadoes?
A) Cumulus
B) Stratus
C) Cirrus
D) Cumulonimbus
2. What role does wind shear play in the formation of tornadoes?
A) It cools down the temperature
B) It creates rotation in the thunderstorm
C) It makes the tornado stop
D) It increases sunlight penetration
3. What time of year do tornadoes most often occur in the United States?
A) Winter
B) Spring
C) Summer
D. Fall
4. What is a tornado alley?
A) A movie about tornadoes
B) A safety zone from tornadoes
C) An area prone to frequent tornadoes
D) A museum with tornado exhibits
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