This NGSS-aligned science reading passage explains what cirrus clouds are made of and how they form. Students will learn that cirrus clouds are made of ice crystals because they form at high altitudes where the air is extremely cold. The passage describes their wispy appearance, how winds shape them, and how they can signal upcoming weather changes. It supports NGSS standard MS-ESS2-6 and helps students explore the connection between cloud types and weather prediction in an engaging and informative way.
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Cirrus clouds are the thin, wispy clouds you often see high up in the sky. They look like feathers or delicate brushstrokes stretched across the blue sky. But what are these clouds made of?
Unlike low clouds that are made mostly of water droplets, cirrus clouds are made of ice crystals. That’s because they form very high in the atmosphere, usually above 20,000 feet (6,000 meters), where the air is extremely cold. At these high altitudes, water vapor freezes into tiny ice crystals instead of turning into liquid droplets.
Cirrus clouds form when moist air rises very high into the sky and cools down. As it cools, the water vapor changes into ice crystals, which spread out into thin layers or streaks. Wind at those heights often stretches the clouds into their familiar wispy shapes.
Even though cirrus clouds don’t produce rain or snow at ground level, they can be a sign that a change in the weather is coming. For example, cirrus clouds sometimes appear before a warm front or a storm system, giving people a clue that rain might be on the way in the next day or two.
Because they are so high, cirrus clouds often catch sunlight in special ways—sometimes glowing pink, orange, or gold during sunrise or sunset.
Fun Fact: The name “cirrus” comes from Latin and means “curl of hair,” which describes their thin, curly appearance!
What are cirrus clouds made of?
Water dropletsSmoke and airIce crystalsDust and fog
Where do cirrus clouds form in the sky?
Near the groundIn the middle of the skyVery high in the atmosphereInside thunderstorms
Why are cirrus clouds made of ice crystals instead of water droplets?
Because it rains in themBecause they form in cold, high airBecause sunlight melts the cloudsBecause they are far from Earth
What do cirrus clouds look like?
Thick and darkThin and wispyRound and puffyFlat and grey
What weather sign might cirrus clouds give us?
Clear skies aheadSnowstorm coming in hoursRain or change in weather in a day or twoCold wind arriving now
What helps shape cirrus clouds into streaks?
Falling rainStrong winds at high altitudesLightning strikesPressure from the ground
What is the main idea of the passage?
Cirrus clouds are rainmakersCirrus clouds float at nightCirrus clouds are high, icy, and show weather changesCirrus clouds are warm and fluffy