What causes the four seasons on Earth?

Earth has four seasons because it tilts as it goes around the Sun, like a spinning top that wobbles.

Imagine Earth is like your favorite toy, a ball that spins around the Sun, which is like a bright light in the sky. But instead of being perfectly straight, Earth is tilted at an angle, just like when you tilt your head to look at something.

As Earth moves around the Sun, different parts get more sunlight than others. When it's summer in one place, that part of Earth is tilted toward the Sun, like holding a flashlight close to your face so you feel warm. When it's winter, that same place is tilted away from the Sun, like moving the flashlight far away and feeling cool.

This tilt stays the same all year, but as Earth moves in its path around the Sun, we experience spring, summer, autumn, and winter one after another. It's like a dance between Earth and the Sun!