The approximate diameter of the earth is
A. | 4,200 Km |
B. | 6,400 Km |
C. | 12,800 Km |
D. | 15,600 Km |
Option: C Explanation : Click on Discuss to view users comments. |
The earth revolves round the sun in its orbit by approximately
A. | 1° per day |
B. | 2° per day |
C. | 3° per day |
D. | 5° per day |
Option: A Explanation : Click on Discuss to view users comments. |
What percentage of insolation is received by the earth's surface?
A. | 43% |
B. | 17% |
C. | 51% |
D. | 90% |
Option: C Explanation : Click on Discuss to view users comments. |