* Earth's Rotation: The Earth spins on its axis, completing a full rotation roughly every 24 hours. This rotation causes day and night. As the Earth rotates, different parts of the planet face the sun.
* Position in the Solar System: The Earth revolves around the Sun. While the Earth rotates on its axis, it's also moving in its orbit. This means that when one side of the Earth is facing the Sun, the other side is facing away from it, plunged in darkness.
In simpler terms:
Imagine a giant ball (Earth) being spun around a light bulb (Sun). When one side of the ball faces the light bulb, it's daytime. When that side of the ball is facing away from the light bulb, it's nighttime.
