Geography
Assertion (A): In the course of the earth's movement around the sun, the North Pole remains inclined towards the sun for a part of the year while the South Pole is tilted away from it.
Reason (R): The earth rotates on an inclined axis in an elliptical path around the sun.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Explanation — The earth rotates on an inclined axis in an elliptical path around the sun. The earth's axis is inclined at an angle of 23.5° from the perpendicular to this plane of the elliptic. As a result of this, in the course of the earth's movement around the sun, the North Pole remains inclined towards the sun for a part of the year while the South Pole is tilted away from it. For the remaining part of the year, the situation is reversed.
Related Questions
Which of the following is true about the revolution of the earth around the sun?
- It results in the cycle of seasons
- The direction of motion is the same as rotation
- The speed is not uniform
- All of the above.
Assertion (A): A bulge in the middle portion of the earth and flattened top at the poles.
Reason (R): Centrifugal force always directed outward, i.e., away from the axis of rotation.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Which of the following is true about the perihelion position of the earth?
- It is farthest from the sun.
- It occurs on 3 January.
- The speed of revolution is the least.
- All of the above.
The lighted part of the earth is called the :
- Circle of Light
- Circle of Illumination
- Circle of Solstice
- Circle of Equinox