What are ocean currents and how do they move heat around the world?
Ocean's Warm Delivery
What are ocean currents and how do they move heat around the world?
The ocean looks like it's just sitting there, sloshing politely against the sand. But it's actually on the move — vast rivers of water flowing inside the sea itself, never stopping, circling the whole planet. We call them ocean currents, and they have a secret job: they're the world's delivery service for heat.
So why does the ocean move at all? Two big bossy forces push it around. The first is the wind. When wind blows across the surface for thousands of miles, it drags the top layer of water along with it, like your breath nudging the foam on a hot drink.
