Cloud Height Prefixes: Which prefix indicates middle-level clouds?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

Cloud Height Prefixes: Which prefix indicates middle-level clouds?

Explanation:
Mid-level cloud prefixes indicate the altitude band where the clouds form. The prefix for that middle layer is alto-, used in cloud types like altocumulus and altostratus. These mid-level clouds typically form roughly from 6,500 to 20,000 feet (about 2,000 to 6,000 meters) above the surface. Cirro- refers to high clouds, strato- to low clouds, and nimbus signals rain-bearing clouds, not height. So, the prefix that denotes middle-level clouds is alto-.

Mid-level cloud prefixes indicate the altitude band where the clouds form. The prefix for that middle layer is alto-, used in cloud types like altocumulus and altostratus. These mid-level clouds typically form roughly from 6,500 to 20,000 feet (about 2,000 to 6,000 meters) above the surface. Cirro- refers to high clouds, strato- to low clouds, and nimbus signals rain-bearing clouds, not height. So, the prefix that denotes middle-level clouds is alto-.

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