Why is there snow in the sky?

Snow in winter is the same as rain in summer, because the water vapor in the air rises and meets cold air at high altitude, so it condenses into small snowflakes. Because of the cold weather in winter, they will not melt when they fall to the ground, which is the snow we see. Have you observed it carefully? Snowflakes are hexagonal, like white flowers, falling one after another, like goose feathers and cotton wool. What else would you think? On snowy days, the ground, trees and houses are all white, as if the earth were dressed in silvery white clothes. On a snowy day, ask your parents to take a picture of you. It's really beautiful. Snow is very useful. It can freeze bacteria and pests to death, make people less sick and make the air fresh. Snow can also protect crops, such as covering crops with thick quilts, which can safely survive the winter. When snow melts, it can also water and fertilize crops. Children welcome snow more. They can make snowmen and have snowball fights happily.