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 : Click on Discuss to view users comments. |
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 : Click on Discuss to view users comments. |
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 : Click on Discuss to view users comments. |
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 : Click on Discuss to view users comments. |
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 : Click on Discuss to view users comments. |
