On a weather map, what does very close spacing of isobars indicate?

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Prepare for the Higher Geography Exam focusing on the Atmosphere. Study with multiple choice questions, receive hints and explanations for each question. Equip yourself for success!

Multiple Choice

On a weather map, what does very close spacing of isobars indicate?

Explanation:
Isobars packed tightly together mean a steep pressure gradient: the pressure changes a lot over a short distance. Air moves from high to low pressure, and the stronger that gradient, the more air is forced to accelerate, producing stronger winds. Conversely, when lines are spaced far apart, the gradient is weak and winds are lighter. Humidity isn’t directly indicated by how close the isobars are, since it’s about moisture content, not pressure spacing.

Isobars packed tightly together mean a steep pressure gradient: the pressure changes a lot over a short distance. Air moves from high to low pressure, and the stronger that gradient, the more air is forced to accelerate, producing stronger winds. Conversely, when lines are spaced far apart, the gradient is weak and winds are lighter. Humidity isn’t directly indicated by how close the isobars are, since it’s about moisture content, not pressure spacing.

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