Why do We have Seasons?

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The year is divided into four seasons. Seasons happen because the Earth is tilted on it axis. As the Earth travels around the Sun, first one pole and then the other pole leans towards the Sun. When the North Pole tips towards the Sun, it is summer in the northern half of the world and winter in the southern half. Six months later, it is the South Pole's

turn to lean towards the Sun, making summer in southern lands and winter in northern ones. Spring and autumn happen when the Earth is between its summer and winter positions. At the poles, there are only two seasons-summer and winter. During the polar winter, the Sun never rises and the days are dark, while in the summers, the Sun shines all the time and there are no real nights.

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