TeXes Science Practice Test

What is the name given to middle altitude clouds between 2000 and 6000 meters that appear puffy?

1. Stratus

2. Altocumulus

3. Cumulonimbus

4. Cirrus

The correct answer is: Altocumulus

Middle altitude clouds, which are typically found between 2000 and 6000 meters, are classified as altocumulus clouds. These clouds are characterized by their puffy, white, and sometimes gray appearance. Altocumulus clouds often appear in patches or layers and can indicate an unstable atmosphere. Their formation is usually a result of moisture-laden air being lifted, which leads to cloud development in this altitude range. The term altocumulus specifically refers to these middle altitude clouds, distinguishing them from stratus clouds, which are more uniform and spread out horizontally at lower altitudes, and from cumulonimbus clouds, which are tall, towering clouds associated with thunderstorms and severe weather. Cirrus clouds, on the other hand, are wispy and thin, found at even higher altitudes, typically above 6000 meters. By identifying the specific characteristics of altocumulus clouds, one can understand their typical appearance and the atmospheric conditions that lead to their formation.