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-There are four types of clouds: low clouds, middle clouds, high clouds, and clouds of vertical development.
-Clouds are classified according to their height, or altitude-low, middle, or high-and their shape.
-If air movement is mainly horizontal, clouds form in layers; these are stratiform clouds. If air movement is mainly vertical,
clouds grow upward in puffs; these are called cumuliform clouds.
-Cloud heights are measured as a distance above the ground, NOT above sea level.
-Clouds reach higher altitudes along the equator and lower latitudes in the polar regions.
1) HIGH CLOUDS
Above about 7000 meters
-cirrus
-cirrostratus
-cirrocumulus
-contrails
2)MIDDLE CLOUDS
About 2000-7000 meters
-altostratus
-altocumulus
3)LOW CLOUDS
Below about 2000 meters
-stratus
-nimbostratus
-stratocumulus
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