What are coriolis effects?

The coriolis effect is like when you’re on a spinning merry-go-round and try to throw a ball straight, it goes sideways instead.

Imagine you're playing catch with your friend while both of you are on a spinning merry-go-round. If you throw the ball straight toward your friend, from their point of view, the ball doesn’t go straight, it curves. That’s because you’re all moving together as the merry-go-round spins, and when you let go of the ball, it keeps moving in the direction it was going before the spin changed.

Earth is like that spinning merry-go-round. It spins around its axis once every day. When things move across Earth, like air or water, they also get this sideways push because of the spin. That’s why winds and ocean currents curve as they travel across the planet.

In the Northern Hemisphere, it pushes things to the right; in the Southern Hemisphere, it pushes them to the left. It's like a giant invisible hand giving everything a little nudge, not magic, just spinning movement!