Classical

Earth - Section 1

41:  

The earth rotates on its axis and the exact time needed for one complete rotation is

A.

,23 hours, 56 minutes, 4.09 seconds

B.

23 hours. 58 minutes. 29.5 seconds

C.

23 hours, 59 minutes, 7.5 seconds,

D.

23 hours. 59 minutes, ,18 seconds

 
 

Option: A

Explanation :


42:  

The speed of rotation of the earth is the highest

A.

Along the Equator

B.

At the North pole

C.

Along the Tropic of Cancer

D.

Along the Arctic Circle

 
 

Option: B

Explanation :


43:  

The exact time taken by the earth for single rotation on its own axis is

A.

24 hrs

B.

24 hrs 5 secs

C.

23 hrs 50 minutes 7.2 secs

D.

23 hrs 56 minutes 4.09 secs

 
 

Option: D

Explanation :


44:  

Green House Effect  means

A.

pollution in houses in tropical regions

B.

trapping. of solar energy due to atmospheric oxygen

C.

trapping of solar energy due to atmospheric carbon dioxide

D.

Cultivation in green houses so as to check pollution.

 
 

Option: C

Explanation :


45:  

It is six months long day in the northern polar region and six months long night in the southern polar region because

A.

earth is revolving around the sun

B.

earth is inclined towards its orbital plane

C.

earth is rotating

D.

None of these

 
 

Option: B

Explanation :




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