Question

As Earth revolves around the Sun, how does its axis of rotation change relative to the Sun? How does this affect the seasons?

Answer 1

Hint: Earth’s orbit is not perfectly a circle. The axis of rotation of Earth does not change at all rather the axis of Earth is tilted. The tilted axis of Earth causes changes in the seasons. Here we will discuss how the tilted axis of Earth causes change in the seasons.

Complete answer:
Many people believe that Earth is closer to the sun in the summer and that is why it is hotter in summer. And, so, they think Earth is farthest from the sun in the winter season.
Although this idea makes sense, it is incorrect.
During part of the year, Earth is closer to the sun compared to other times. However, in the Northern Hemisphere, we are having winter when Earth is closest to the sun and summer when it is farther away! Compared with how far away the sun is, this change in Earth's distance throughout the year does not make much of a difference to our weather.
There is a different reason for Earth's seasons.
Earth's axis is an imaginary pole going right through the center of Earth from the "top" to its "bottom." Earth spins about this pole, making one complete turn each day. That is why we have day and night, and why every part of Earth's surface gets some of both.
Earth has seasons because its axis doesn't stand up straight.
Let us now know why the axis of Earth is not straight. Long, when Earth was young, it is thought that something big hit Earth. So instead of rotating with its axis straight up and down, it is leaned over a bit.
As Earth orbits the sun, its tilted axis points in the same direction always. So, throughout the year, different parts of Earth get the direct rays of sun.
Sometimes it is the North Pole tilting towards the sun (around June) and sometimes it is the South Pole tilting towards the sun (around December).
It is summer in June in the Northern Hemisphere because the sun's rays hit that part of Earth more directly than at any other time. It is winter in December in the Northern Hemisphere, because that is when it is the South Pole's turn to be tilted towards the sun.

Note:
It is very important to note that the present angle at which the earth is aligned is best suitable to sustain life. If the angle is increased to 45 degrees or even more than that, it will be very difficult to sustain life on earth.