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Clouds. 3.5.7.C Describe the Basic Elements of Meteorology. UNDERSTANDING CLOUDS.
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Clouds 3.5.7.C Describe the Basic Elements of Meteorology
UNDERSTANDING CLOUDS Clouds are usually the most obvious feature of the sky. They reflect weather patterns and play a role in what the weather does. They are sources of precipitation as well as affect the temperatures of our atmosphere. Clouds block incoming sunlight during the day, which cools the air, but they can also block outgoing radiation from the Earth, which can warm temperatures.
WHAT ARE CLOUDS Clouds are water, either small liquid water drops or tiny pieces of ice. Meteorologists rank clouds according to their height and whether they are puffy or flat.
HOW ARE CLOUDS FORMED Clouds form when the air rises and evaporation and transpiration occurs. As temperatures and air pressure drop, water droplets clump together causing condensation or a cloud. When the droplets are too heavy to float in the air they fall to the ground in the form of rain or snow called, precipitation.
CLOUD CLASSIFICATION • Cirrus-high level clouds that have bases below 7,000 feet • Cumulus- mid-level clouds that have bases between 7000-18,000 feet • Stratus-low level clouds that have bases below 6,500 feet
CIRRUS • High altitude and wispy • Composed of ice crystals • Thin with hair-like strands • Some have a wavelike appearance • Some have a sheet-like appearance • Are usually thin allowing moonlight and sun to shine through
CUMULUS • Contains ice crystals or rain • Usually puffy • Noticeable vertical development • Have popcorn appearance • Can be widely scattered or clumped • Appears thick
STRATUS • Lowest of the low clouds • Appear as an overcast, but can be scattered • Can be in layers
Your Turn • Using your knowledge about the three basic types of clouds, create your own cloud. • You may use any materials you wish to make your cloud. • Create your cloud, attach your name and the type of cloud you created. • The project is worth 25 Points! • Have Fun!