FAA Ground School Practice Test

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What does the suffix "nimbus" indicate when used in naming clouds?

  1. A high, fluffy cloud

  2. A rain cloud

  3. A cloud without precipitation

  4. A cloud that reflects light

The correct answer is: A rain cloud

The suffix "nimbus" is derived from Latin, meaning "rain." When used in cloud naming, it indicates a cloud that is associated with precipitation. For example, a cumulonimbus cloud is a type of cloud that not only produces heavy rains but can also be a strong thunderstorm cloud. Therefore, when "nimbus" is part of the name of a cloud, it signals to meteorologists and aviators that this cloud has the potential to produce rain or other forms of precipitation. This is key information for weather forecasting and aviation safety, highlighting the importance of understanding cloud nomenclature in the context of meteorology.

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