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 : |
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 : |
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 : |
