Which of the following is a possible consequence of subsidence?4
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Which cloud type may indicate the presence of severe turbulence?4
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At the top of orographic waves, in mountainous regions, the cloud most likely to be encountered is4
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Clouds, fog or dew will always be formed when:4
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Which of the following types of clouds are evidence of unstable air conditions?4
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Which of the following clouds are classified as medium level clouds in temperate regions?4
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Which one of the displayed cloud forms is representative of altocumulus castellanus?4
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What is the main composition of clouds classified as 'high level clouds'?4
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A plain in Western Europe with an average elevation of 500 m (1600') above sea level is covered with a uniform AC layer of cloud during the summer months. At what height above the ground is the base of this cloud to be expected?4
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Which of the following clouds may extend into more than one layer?4
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