Key:
* The Sun is at the center of the diagram.
* The Earth is rotating on its axis, which is tilted at an angle of 23.5 degrees.
* The day side of the Earth is facing the Sun and is experiencing daylight.
* The night side of the Earth is facing away from the Sun and is experiencing darkness.
* The terminator is the line that separates the day side of the Earth from the night side.
As the Earth rotates on its axis, the terminator moves from west to east, causing different parts of the Earth to experience day and night.
The Earth also orbits around the Sun, which causes the seasons. As the Earth orbits the Sun, its axis is always tilted in the same direction. This means that the Northern Hemisphere is tilted towards the Sun during the summer months, and the Southern Hemisphere is tilted towards the Sun during the winter months.
The changing seasons are caused by the Earth's orbit around the Sun, and not by the Earth's rotation on its axis.
