Describe the changes in season on the earth due to its rotation around the sun and the tilting of its axis of rotation.

Earth is rotating about its axis through its north and south pole. It takes 20 hours in one rotation. The day and night on earth occur due to its rotation. The axis of rotation of the earth is slightly tilted with respect to the plane of its orbit around the sun. Further the tilting of the rotation of the earth is always in same direction. The earth completes one revolution around the sun in 365.25 days. As a result, the tilting of the northern and southern hemispheres of the earth towards the sun keeps on changing throughout the year.(a) We experience summer when the northern hemisphere is tilted towards the sun.(b) We experience winter when the southern hemisphere is tilted towards the sun.(c) We experience autumn and spring when the earth is between above two extreme positions.