Tornadoes form when warm, moist air collides with cold, dry air, creating instability in the atmosphere. This instability, combined with changes in wind direction and speed at different altitudes, can cause a rotating thunderstorm called a supercell. When the rotation tightens and speeds up, it can create a funnel cloud that, once it touches the ground, becomes a tornado.
MCQs
1. What causes the spinning motion of a tornado?
A) The moon’s gravitational pull
B) Wind at different heights moving at different speeds
C) Earth’s rotation
D) High temperature
2. What is a supercell?
A) A type of rain cloud
B) A very large tornado
C) A powerful, rotating thunderstorm
D) A small hurricane
3. Tornadoes are most common in which part of the United States?
A) The West Coast
B) The Midwest
C) The Northeast
D) The Southeast
4. What is a tornado’s funnel cloud made of?
A) Smoke
B) Dust and debris
C) Condensed water droplets
D) Sand
Fill in The Blanks
Choose from These Words: moist, mesocyclone, 300, unstable.
1. Tornadoes form when warm, ______ air meets cool, dry air.
2. The rotating column of air in a tornado is called a __________.
3. Tornadoes can have wind speeds of over _______ miles per hour.
4. Tornadoes form in an atmosphere that is _______.
True / False
1. Tornadoes can only form during the summer months (True / False)
2. Tornadoes always come with heavy rain and thunderstorms (True / False)
3. Tornadoes only occur in the United States (True / False)
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