Officer Aptitude Rating (OAR) Test 2025 – 400 Free Practice Questions to Pass the Exam

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What distinguishes cirrus clouds from other types like altocumulus?

They are the lowest forming clouds

They are formed from ice crystals at high altitudes

Cirrus clouds are specifically distinguished by their formation from ice crystals at high altitudes, typically above 20,000 feet. This high-altitude formation results in their thin and wispy appearance, often resembling feathers or strands. The presence of ice crystals is due to the colder temperatures at these elevations, which differ from other cloud types, like altocumulus, that are typically composed of water droplets and form at lower altitudes. Understanding that cirrus clouds are primarily made of ice crystals helps to contextualize their characteristics, such as their transparency and their role in weather patterns, as they usually indicate fair weather or the onset of a change in weather. This feature is a key distinguishing factor when comparing cirrus clouds to other types, which may vary in texture, altitude, and precipitation capability.

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They are only grey in color

They do not produce precipitation

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