Cloud Types Quiz

Cirrus clouds are high-altitude clouds composed of ice crystals, typically found above 20,000 feet (6,000m). They appear thin and wispy and often indicate fair weather but may signal approaching weather changes.

Cumuliform clouds show significant vertical development with puffy, towering characteristics, while stratiform clouds form in horizontal layers or sheets across the sky.

Nimbostratus clouds are low to middle-level clouds that produce continuous, steady precipitation. They form in stable atmospheric conditions and appear as thick, grey layers.

Middle-level clouds with the 'alto-' prefix (Altostratus, Altocumulus) typically form between 6,500 and 20,000 feet (2,000-6,000m) in temperate regions.

Cumulonimbus clouds are towering clouds that extend through all altitude levels and are associated with thunderstorms, severe turbulence, icing, hail, and lightning - presenting significant aviation hazards.

Both are high-altitude ice crystal clouds, but Cirrostratus forms a thin, sheet-like layer that often covers the entire sky, while Cirrus appears as separate fibrous or streaky patches.

Stratus clouds form as uniform grey layers at low altitudes, often creating overcast conditions with poor visibility. They may produce light drizzle or mist.

Altocumulus clouds appear as grey or white patches or layers, usually with shading. They are middle-level clouds that often indicate unstable atmospheric conditions.

Fair weather Cumulus clouds have well-defined edges, moderate vertical development, and typically form in stable conditions with good visibility underneath.

Cirrocumulus clouds appear as small white patches without shading, often arranged in rows or groups, creating what meteorologists call a 'mackerel sky' pattern.