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Learn about the three main types of clouds - cumulus, stratus, and cirrus - and how they affect weather. Find out the ingredients that form clouds and discover the formation of fog.
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Clouds • Clouds are tiny droplets of water (or ice) that float in the air • They form when water vapor condensesand becomes liquid water (or ice)
Classifying Clouds • There are three main types of clouds • Cumulus • Stratus • Cirrus • Each type causes different types of weather
Ingredients-water vapor-cooling temperatures-condensation nuclei
Cumulus Clouds • Cumulus clouds look like fluffy, round piles of cotton • Form in low to mid altitudes • These clouds indicate fair weather • Cumulonimbus clouds are towering clouds with flat tops that produce thunderstorms
Stratus Clouds • Stratus clouds form flat, gray layers and cover most of the sky • They form at low altitudes (below 2 kilometers) • These clouds produce drizzle, rain, or snow
Cirrus Clouds • Form at high levels (above 6 kilometers) where temperatures are low • They are made of ice crystals and are associated with fair weather
Fog • Fog is when clouds form at or near the ground • It forms when the ground cools at night after a warm, humid day