Here's why:
* Earth's Rotation: The Earth spins on its axis, completing a full rotation roughly every 24 hours. This rotation is what causes day and night.
* Perspective: As Earth rotates, it's like we're standing on a spinning platform. From our perspective, the Sun seems to move across the sky, even though it's actually the Earth moving beneath it.
Think of it like this: Imagine you're on a carousel, and the carousel is spinning. Even though you're staying in place on the carousel, the horses and other decorations around you will seem to move past you. It's the same principle with the Earth and the Sun.