Storyclover
Storyclover
Late on a warm afternoon, Mara stood on the steps and studied a storm cloud above the meadow. She wanted to know why it grew so tall.
Why Does a Storm Cloud Grow So Tall?Warm wet air rises, cools, and builds towering clouds where droplets and ice can grow heavy enough to fall.
1. Late on a warm afternoon, Mara stood on the steps and studied a storm cloud above the meadow. She wanted to know why it grew so tall.
2. The sun had warmed the wet garden, the pond, and the road. Warm wet air rose from them, because warm air is lighter than cool air.
3. Up high, the air was cooler. The rising water vapor cooled and became tiny droplets. The droplets gathered into a soft gray cloud.
4. But the ground kept warming the wet air. Fresh warm air rose into the cloud and lifted more droplets with it. The cloud piled upward.
5. Near the top, the air was cold enough to turn some droplets into little ice crystals. Droplets and crystals bumped together, growing rounder and heavier.
6. Mara held her umbrella and watched the cloud's top puff high above the trees. Its lower part was packed with water and ice, and it could not hold everything forever.
7. The biggest drops grew heavy enough to fall. Some ice melted into rain on the way down, and soft thunder grumbled behind the cloud.
8. Mara listened to the rain tapping on her umbrella. Now she knew the answer: Warm wet air rises, cools, and builds towering clouds where droplets and ice can grow heavy enough to fall.
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