What fundamental process in the atmosphere results in the movement we measure as wind?

Answer

Air moving from high-pressure zones toward low-pressure zones.

When air warms, it rises creating low pressure; when air cools, it sinks creating high pressure. Air naturally moves to seek equilibrium by flowing from the areas where density is high (high pressure) to where density is lower (low pressure), which is wind.

What fundamental process in the atmosphere results in the movement we measure as wind?
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