Question

The change in seasons on the earth occurs because
(a) the distance between the earth and the sun is not constant.
(b) the axis of rotation of the earth is parallel to the plane of its
orbit.
(c) the axis of rotation of the earth is perpendicular to the plane
of its orbit.
(d) the axis of rotation of the earth is tilted with respect to the
plane of its orbit.


NCERT Class VIII
Science - Exemplar Problems

Chapter 17. Stars and Solar System

Answer 1

(d) the axis of rotation of the earth is tilted with respect to the
plane of its orbit.

Answer 2

The change in the ‘seasons’ on the earth occurs because the axis of ‘rotation of the earth’ is tilted with respect to the ‘plane of its orbit’.

Option: (d)

Explanation:

• The seasons are created due to the Earth’s axis. This axis or the imaginary line would go through the Earth and around the spinning of the earth, would be tilted.  

• It has been said that, about 23.5 degrees are tilted which is relative to ‘our orbital plane’ around the sun.

• This axis has been tilted and it will further point to the North Star, regardless of the Earth’s orbit.  

• Not only Earth, other planets whose axis rotation are tilted would experience seasonal changes.

Learn more about rotation of the earth

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