Classical

Earth - Section 1

16:  

Which of the following is the cause for the earth's seasons?

A.

Vari,ation in the amount of ene'rgy' given off .by thesun'

B.

Its elliptical orbit and varying speed of rotation

C.

Inclination of its' axis of rotation to the plane of,orbit,

D.

Its greater' distance, from the Sun during winter than during Summer

 
 

Option: C

Explanation :


17:  

The position of the earth in its orbit, when it is at its greatest distance from the Sun causing summer in the Northern Hemisphere is:

A.

Perihelion

B.

Aphelion

C.

Perigee

D.

Apogee

 
 

Option: B

Explanation :


18:  

The time required for moonlight to reach earth

A.

3.6 sec

B.

2 sec

C.

1.3 sec

D.

1 sec

 
 

Option: C

Explanation :


19:  

Only one side of the moon is ever seen from the earth because

A.

the moon is at perigee

B.

the moon does not rotate

C.

only one side reflects light

D.

the periods of rotation and revolution of the moon are equal

 
 

Option: D

Explanation :


20:  

Day's and nights are caused by
1 rotation of the earth on its axis
2. revolution of the earth around the sun
3. inclination of the earth's axis

A.

Only 1 is correct

B.

1 and 2 are correct

C.

2 and 3 are correct

D.

All are correct

 
 

Option: A

Explanation :




Suggest an improvement