elevation potential energy

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The energy possessed by a mass (e.g. a body of water) by virtue of its being raised above a particular datum point, usually taken as either sea level or local ground level. The energy may be released when the mass is allowed to fall to a lower level, and may be harnessed (e.g. in the case of water by powering a turbine in a hydroelectric scheme). The elevation head is the energy possessed by a unit weight of water at a point, owing to this cause. See also Bernoulli equation; Darcy's Law; pressure head.

Subjects: Ecology and Conservation — Earth Sciences and Geography.

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