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CBSE Class 7 Social Studies Worksheet

Geography

1.
State Yes or No: On 17-18 October 1999, a cyclone hit five districts of the Bihar state.
A) Yes B) No
2.
Fill in the blanks: Exosphere layer helps in ____________ transmission.
3.
State Yes or No: Exosphere layer has very thin air.
A) Yes B) No
4.
What is the solid crust or the hard top layer of the earth?
5.
State Yes or No: When people inhale, we take some amount of nitrogen into our lungs and exhale it.
A) Yes B) No
6.
Fill in the blanks: Early warning systems are in place across the ____________ ocean, but not in the Indian Ocean.
7.
State Yes or No: The temperature of the atmosphere changes not only between day and night but also from season to season.
A) Yes B) No
8.
State Yes or No: The mass of air that has made the temperature on the earth liveable.
A) Yes B) No
9.
Why level of greenhouse gas in the atmosphere increases?
10.
Fill in the blanks: ____________ are hotter than winters.
11.
State Yes or No: The 7 to 10 m high tidal wave intruded suddenly and caused massive damage to the standing paddy crops.
A) Yes B) No
12.
State Yes or No: Insolation is the incoming solar energy intercepted by the earth.
A) Yes B) No
13.
State Yes or No: Industrial revolution enabled small scale production. 
A) Yes B) No
14.
Fill in the blanks: In areas having lower temperature, the ____________ is cold.
15.
Fill in the blanks: In fact, radio waves transmitted from the ____________ are reflected back to the ____________ by exosphere.
16.
Give examples of fuel.
17.
Fill in the blanks: Forms of precipitation are ____________, sleet, hail.
18.
What makes a perfect balance in the atmosphere?
19.
State Yes or No: The radius of the earth is 6370 km. 
A) Yes B) No
20.
Fill in the blanks: In areas where ____________ is high the air gets heated and rises.

CBSE Class 7 Social Studies Worksheet

Geography

Answers

1.
Option B

2.
Radio
3.
Option A

4.
The lithosphere is the solid crust or the hard top layer of the earth. 
5.
Option A

6.
Pacific
7.
Option A
8.
Option A

9.
When the level of green house gas in the atmosphere increases due to factory smoke or car fumes, the heat retained increases the temperature of the earth.
10.
Summers
11.
Option A
12.
Option A
13.
Option B

14.
Air
15.
Earth
16.
Coal, natural gas and petroleum are examples of fuel. 
17.
Snow
18.
The amount of carbon dioxide released by humans or animals seems to be equal to the amount used by the plants which make a perfect balance in the atmosphere.
19.
Option B

20.
Temperature
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