Here's why:
* Rotation: The Earth spins on its axis, completing one full rotation approximately every 24 hours. As the Earth rotates, different parts of the planet face the sun, creating daylight. The opposite side of the Earth faces away from the sun, experiencing night.
* Orbit: The Earth's orbit around the sun causes the seasons, but not day and night. The Earth takes about 365 days to complete one orbit around the sun.
Think of it this way: Imagine a spinning basketball with a light shining on it. The side of the basketball facing the light experiences "day," while the side facing away experiences "night." This is similar to how the Earth's rotation creates day and night.
