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Classifying Clouds

Video link. Classifying Clouds. Essential Question. How do we classify clouds? Clouds are classified according to their height above ground and appearance (texture) from the ground. .  The following cloud roots and translations summarize the components of this classification system :

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Classifying Clouds

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  1. Video link Classifying Clouds

  2. Essential Question How do we classify clouds? Clouds are classified according to their height above ground and appearance (texture) from the ground. 

  3.  The following cloud roots and translations summarize the components of this classification system:  1) Cirro-: curl of hair, high.          2) Alto-: mid.                                          3) Strato-: layer.                                   4) Nimbo-: rain, precipitation. 5) Cumulo-: heap.

  4. High-levelclouds • High-level clouds are given the prefix "cirro". Due to cold temperatures at these levels, the clouds primarily are composed of ice crystals,  and often appear thin, streaky, and white. •    The three main types of high clouds are cirrus, cirrostratus, and cirrocumulus. 

  5. Mid-level clouds • Depending on the altitude, time of year, and vertical temperature structure of the troposphere, these clouds may be composed of liquid water droplets, ice crystals, or a combination of the two, including supercooled droplets (i.e., liquid droplets whose temperatures are below freezing).  • The two main type of mid-level clouds are altostratus and altocumulus. 

  6. Low-level clouds • Low clouds normally consist of liquid water droplets or even supercooled droplets, except during cold winter storms when ice crystals (and snow) comprise much of the clouds. • The two main types of low clouds include stratus, which develop horizontally, and cumulus, which develop vertically.

  7. Clouds are also classified by their appearance. • Clouds come in three basic shapes: • Cumulus • Cirrus • Stratus • All other cloud names are combinations of these 3 basic shapes and a prefix or suffix.

  8. Cumulus • Puffy with flat bottoms • Signals fair weather

  9. Cumulonimbus • Looks like an anvil; called "Thunderheads” • Signals stormy weather

  10. Cirrus • Wispy; looks like a horse’s tail or mane • Signals fair weather

  11. Cirrocumulus • Cotton balls in rows • Signals fair weather

  12. Stratus • Like a blanket • Signals approaching rain

  13. Nimbostratus • Dark clouds • Signals long periods of precipitation

  14. How do we classify clouds? • Discuss with your table.

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