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SAI International School
Class VII
Home Assignment
Subject: Physics
Ch-Wind, Storm and Cyclones
Subtopic: Tornado

For Assertion & Reason question follow the following directions.
DIRECTION: Each of these questions contains an Assertion followed by Reason. Read them carefully and answer the
question on the basis of following options. You have to select the one that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion & Reason both are incorrect.

Any one option is correct. Marks
1. Which of the following is not a relevant precaution during tornado? 1
a) Go to the lowest and smallest room, preferably to the basement.
b) Do not use umbrella with metallic tips or base.
c) Get under base something sturdy or in a hallway.
d) Get away from windows.
2. What country has the most tornadoes in the world each year? 1
a) China
b) Australia
c) Mexico
d) United States
3. What is the region in the Midwest called where most of the tornadoes in the 1
United States form?
a) Windy Plains
b) Dust Bowl
c) Tornado Alley
d) Great Tornado Flats
4. A dark funnel shaped cloud that reaches from the sky to the ground is called a 1
a) Hurricane
b) Typhoon
c) Tornado
d) Thunderstorm

5. Tornado is formed 1
1. The air from the Earth’s surface, which is comparatively warm, rises up.
2. When column of cold air, funnel like in shape sinks from a storm cloud
(Cumulonimbus cloud).
3. When the funnel touches the ground it becomes a tornado
4. Warm air starts revolving around the cold air column with a very high
speed swirling wind.
Arrange the above in correct order for tornado formation:
a) 1,2,3,4
b) 2,1,4,3
c) 3,1,4,2
d) 4,3,1,2