An eddy is defined by our textbook as the circular movement of water. The following quote from the textbook describes the process that forms an eddy: "When a narrow, fast-moving current moves into or through slower-moving water, the force of its flow displaces the quieter water and captures additional water as it does so. The current oscillates and develops waves along its boundary that are known as meanders. These meanders break off to form eddies, or pockets of water moving with a circular motion; eddies take with them energy of motion from the main flow and gradually dissipate this energy through friction." Click here to learn more about eddies.
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