Weather theoryQuestion 324 of 934

On a surface weather chart, what do closely spaced isobars show?

  1. A shallow pressure gradient and light winds
  2. A stationary front
  3. A ridge of low pressure
  4. A steep pressure gradient and strong winds
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Correct answer: A steep pressure gradient and strong winds

Isobars close together mean a steep pressure gradient and strong winds.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 12: Weather Theory — Wind and Pressure on Weather Maps, page 296

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Questions last reviewed: 18 October 2026