9781422277539

Breaking waves pound at solid rock, splitting it into boulders and gradually reducing it to small stones and beach sand.

Currents and Water Movement The waters of the world’s oceans are kept in constant motion by powerful currents that sweep across the globe. Driven by a combination of solar heat, the rotation of the Earth, and ocean winds, these currents have a huge influence on global weather systems and climate, for better or worse. Ocean water is continually on the move. Some ocean cur- rents carry water around the ocean surface, while others move water down into the depths, across the ocean floor, and up again. These surface and deep-water currents interact in a complex pattern.

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Oceans