Isobar facts for kids
Video loop of isobars showing the motion of a cold front
An isobar (from βάρος or baros, meaning 'weight') is a line of equal or constant pressure on a graph, plot, or map; an isopleth or contour line of pressure. More accurately, isobars are lines drawn on a map joining places of equal average atmospheric pressure reduced to sea level for a specified period of time.
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Isobar Facts for Kids. Kiddle Encyclopedia.