MasteryExams
Geography • Physical GeographyMedium

Which of the following cloud classifications describes a mid-level gray or blue-gray blanket-like layer that often covers the entire sky and allows the sun to appear dimly?

A. Cirrostratus
B. Altostratus✓ Correct Answer
C. Stratocumulus
D. Nimbostratus

💡 Solution & Explanation

Altostratus clouds form a mid-level gray or bluish sheet that blankets the sky uniformly, allowing the sun to appear dimly as if viewed through frosted glass. High-level clouds like cirrostratus are thinner and ice-crystal based, whereas low-level nimbostratus clouds are darker and thicker, producing continuous precipitation. Choosing stratocumulus would be incorrect because those clouds appear as patchy, lumpy layers rather than a smooth veil. Altostratus layers often precede approaching warm fronts and continuous rain or snow systems.

🚩 Report a problem