How does the Earth's rotation affect day and night?

The Earth's rotation on its axis is what causes day and night. As the Earth spins, different parts of the planet are either facing towards the Sun, experiencing day, or facing away from the sun, experiencing night. This rotation takes approximately 24 hours to complete, creating our 24-hour day and night cycle. The tilt of the Earth's axis also plays a role in the varying lengths of day and night throughout the year. Understanding the Earth's rotation is crucial in grasping fundamental concepts of world geography.