What percentage of insolation is received by the earth's surface?
| A. | 47% |
| B. | 51% |
| C. | 66% |
| D. | 87% |
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Option: B Explanation : Click on Discuss to view users comments. |
The word used to describe the shape of earth is
| A. | Flat |
| B. | Circle |
| C. | Sphere |
| D. | Oblate Spheroid |
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Option: D Explanation : Click on Discuss to view users comments. |
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 |
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Option: C Explanation : Click on Discuss to view users comments. |
