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Circulation facts for kids

Kids Encyclopedia Facts

Circulation may be used in reference to:

  • Circulatory system, a biological organ system whose primary function is to move substances to and from cells
  • Circulation (fluid dynamics), the path integral of the fluid velocity around a closed curve
  • Exhaust gas recirculation, a nitrogen oxide reduction technique
  • Atmospheric circulation, the large-scale movement of air
  • Newspaper circulation, the average number of copies of a newspaper distributed on a day
  • Magazine circulation, the average number of copies of a periodical distributed per edition/ volume
  • Library circulation, the activities around the lending of library books and other material to users of a lending library
  • Circulation (currency), the transfer of currency through the hands of civilians

See also

Kids robot.svg In Spanish: Circulación para niños

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Circulation Facts for Kids. Kiddle Encyclopedia.