Why do we have seasons?

Why do we have seasons?

Due to the orbiting of the earth we have seasons.

First there are four seasons in a year. In addition New Zealand have winter in June, July and August. Summer is in December , January and February. Autumn is in March , April and May. Spring is in September , October and November.

Secondly  the sun is the center of the solar system.

Planet earth revolves around the sun.

The axis of the earth is tilted.

Since the earth is tilted , for part of the year, one of the hemisphere is warmer and the other hemisphere is cooler. One of the hemisphere is northern hemisphere and the other is southern hemisphere.

Thirdly the northern hemisphere is leaning towards the sun. To make spring and autumn the northern hemisphere has to be either tilted toward the sun or away from it.

So temperatures during spring and fall are moderate: not too hot and not too cold. Later then if the southern hemisphere is tilted toward the sun or away from it , then it would be winter and summer.

Finally one hemisphere gets more sunlight it’s summer.

If there is not that much sunlight then it is winter.

In conclusion : The season that you're experiencing right this very minute is caused in  part by the amount of direct sunlight you're getting.

So seasons are caused by the Earth's tilt on its axis as it cruise around the sun in its orbit.