Why Does the Ocean Not Fall Off the Edge of the Earth?

Think of the Earth like a giant, round ball. If you roll a marble on a table, it stays there unless you push it hard. The ocean is just a huge amount of water sitting on that ball. But wait! You might wonder why the water doesn't just slide off if we are at the bottom or the top!

Gravity is like an invisible magnet. It pulls everything toward the center of the Earth. This means no matter where you stand, gravity pulls your feet down and keeps the oceans pressed against the planet.

The Earth is round, so "down" always points to the center. Imagine a ball covered in slime. No matter how you turn it, the slime stays stuck to the surface because it wants to be close to the core. Water behaves just like that slime. It flows over mountains and fills valleys, but it never flies off into space.

Our atmosphere also helps! The air pressure pushes down on the water, helping to hold it in place. Without this help, some water might escape into space, but for now, gravity wins the tug-of-war.