Severe Weather — Quiz

Question 4 • Earth and Space Science

Which statement best explains how a decrease in atmospheric pressure can lead to the formation of a tornado-producing storm system?

Answer

Lower pressure allows warm, moist air to rise, leading to condensation, strong updrafts, and rotation that can intensify a storm.

Lower pressure pushes cooler air downward, increasing compression and weakening the storm's vertical motion and rotation.

Lower pressure increases the weight of the air column, reducing uplift and limiting the storm's ability to form rotating updrafts.

Lower pressure prevents moisture from condensing, reducing cloud development and stopping rotation from building in the storm.

Explanation

A decrease in atmospheric pressure can help warm, moist air rise. As the air rises, it cools and water vapor condenses, releasing heat that can strengthen the updraft; wind differences can then help the storm develop rotation. Choice A describes this process. The other choices incorrectly say lower pressure pushes air down, increases the air column’s weight, or prevents condensation.

AI-written and checked against the verified answer.

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