Classical

Earth - Section 1

36:  

The mean radius of the earth is approximately

A.

3200 Km

B.

6400Km

C.

9600Km

D.

12800Km

 
 

Option: B

Explanation :


37:  

One degree of the circumference of the earth measures (approx.)

A.

100 Km

B.

111 Km

C.

151 Km

D.

175Km

 
 

Option: B

Explanation :


38:  

Heat received by earth from the Sun is known as

A.

Insolation

B.

Solar heat

C.

Solar radiation

D.

Thermal radiation

 
 

Option: A

Explanation :


39:  

At the  core of the earth the temperature  estimated to be around

A.

100oC

B.

1200oC

C.

2000oC

D.

2600oC

 
 

Option: C

Explanation :


40:  

Consider a specific point on the surface of the earth (say, Delhi) The temperature at a given time of day (say, 12.00 Noon) will in general be higher in summer than in winter. This because 

A.

the evaporation of water from atmosphere results in precipitation occurring in winter alone

B.

Sun rays falling on thel earth are  inclined more towards the sun in winter

C.

the earth is closer to the sun in summer than in winter

D.

the axis of the earth is inclined more towards the Sun in winter

 
 

Option: B

Explanation :




Suggest an improvement