In illustration D039NG below, which number...

Question 1 of 2707066636ee928f7522a1c519945

In illustration D039NG below, which number indicates cirrus clouds?

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Question 1 of 27070

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In illustration D039NG below, which number indicates cirrus clouds?

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🔍 Key Concepts

• Typical altitude range and appearance of cirrus clouds • Differences between high-level (cirrus, cirrostratus, cirrocumulus) and mid/low-level cloud types • Using the height scale (in feet) on the left side of the illustration to classify clouds

💭 Think About

• First decide: in this picture, at what altitudes do cirrus clouds normally appear, and which numbered groups lie in that band? • Look closely at the shape and texture of each numbered cloud option: which one looks most like thin, wispy "mare’s tails" rather than puffy heaps or uniform layers? • For each option, ask if it might instead be a mid-level altocumulus/altostratus or a low-level stratus/cumulus rather than a true high, icy cloud

✅ Before You Answer

• Confirm that the number you choose is in the highest cloud layer region on the vertical scale (generally above about 20,000 feet) • Make sure the cloud you pick looks thin and fibrous, not thick, lumpy, or towering • Eliminate any option where the clouds are casting obvious shadows on lower layers or appear close to the surface, since cirrus clouds are very high up