How are the four seasons of the earth formed?

In the process of the earth's revolution, due to the tilt of the earth, the sun regularly shines directly or obliquely to a certain place, so the temperature also changes regularly, forming four seasons.

The speed of the earth's revolution around the sun is 30 kilometers per second, which takes 365 days and 5: 48: 46, which is one year.

One day the earth rotates is 1 day, or exactly 23 hours, 56 minutes and 04 seconds. The earth itself rotates on its axis (that is, the earth rotates), and at the same time it moves in a circle around the sun (that is, the so-called revolution of the earth). Note that when it moves in a circle, the orbit is elliptical.