Classical

Earth - Section 1

31:  

Days and nights are equal throughout the globe when Sun is above

A.

Poles

B.

Tropic of Cancer

C.

Equator

D.

Tropic of Capricorn

 
 

Option: C

Explanation :

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32:  

The mean distance between the distances on perihelion and aphelion (in millwn'km.) is

A.

111 km

B.

149.5km

C.

159 km

D.

168.5km

 
 

Option: B

Explanation :

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33:  

The crust forms what percentage of the volume of the earth?

A.

0.5%

B.

2.5%

C.

7.5%

D.

12.5%

 
 

Option: A

Explanation :

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34:  

Variation in duration of day and night is due to
1. rotation of earth on its axis
2. revolution of earth round the sun
3. inclination of earth atan angle of 66 1/2

A.

1 and 2

B.

2 and   3

C.

1 and 3

D.

1,2 and 3

 
 

Option: B

Explanation :

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35:  

The moon is called a satellite of the earth because

A.

it is much 'smaller than the earth

B.

it revolves round the earth

C.

it draws light froth the sun via the earth

D.

it remains in position due to the gravitational pull of the earth.

 
 

Option: B

Explanation :

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