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Comprehension Checkup

Choose the best answer.

1 What is this story mainly about?

a. Tornado Alley
b. how tornadoes form

c. how dangerous tornadoes are

d. tornadoes and their characteristics

2 What is the area in mid-America that gets a lot of tornadoes?

a. Tornado Alley b. Thunderstorm Alley

c. Windstorm Alley d. the Mississippi River

3 What speed can winds in the center of a tornado reach?
a. 500m per hour b. 5km per hour

c. 50km per hour d. 500km per hour

4 When unstable hot air meets cooler air, .
a. air does not last a long time

b. a thunderstorm touches the ground

c. a thunderstorm forms

d. tornadoes usually occur

5 How are 689 people killed on March 18, 1925?

a. A single giant tornado formed in Japan.

b. A series of tornadoes occurred in Japan.

c. An earthquake happened in mid-America.
d. A series of tornadoes occurred in the United States.

6 Which is NOT true about tornadoes?

a. They are not very wide. b. They are not even deadly.
c. They are very destructive. d. They do not last a long time.

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