Science Links for Water Systems of the World

Ocean Currents

A current is the steady, predictable flow of one fluid within the body of another fluid. Fluids are materials capable of flowing and easily changing shape. The most common natural fluid is water. River currents are influenced by the volume, or amount, of water flowing in a river; the river's steepness, called its stream gradient; and a riverbed's topography, including sand bars, basins, rocks, and dams. The following articles and maps help us understand ocean currents and their interaction and effects on weather systems.

El NiƱo


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