Hi I'm Forgee I am going to tell you about the seasons.
The earth has a tilt of 23.5 and the earth rotates around the sun, in an almost perfect circle. When the port of the earth is tilted towrds the sun, it gets more direct sunlight.
Summer is when the most amount of sunlight is hitting the earth. summer solstice is on June 21st. In the southern hemisphere, it is autumn.
In spring there is slightly less sunlight hitting earth, but still enough for it to be warm out. The Spring equinox is March 20th. in the southern hemisphere it is winter.
In autumn the leaves start to change color because the earth is tilted away from the sun so it is colder. This means that the earth in the northern hemisphear is starting to get less direct sunlight. The autumn equinox is March 20th. in the southern hemisphere, it is summer.