On an isobaric weather chart,the spacing of the height contours indicates the magnitude of the pressure gradient force.

Question

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On an isobaric weather chart, the spacing of the height contours indicates changes in the height of the pressure surface (geopotential height), which is directly related to variations in atmospheric pressure and thus the magnitude of the pressure gradient force. Closer spacing of height contours indicates stronger pressure gradients, while wider spacing indicates weaker gradients.

On an Isobaric Weather Chart,the Spacing of the Height Contours