The sun is shining and the sky is clear in Wan Li today. I play in the yard with the children. Just as we were having a good time, all of a sudden, dark clouds were gathering and there was a strong wind, and then it began to rain. Alas! God is like a child's face. He changes when he talks, and sometimes he laughs and sometimes he cries.

I thought to myself: Why does it rain? Why is there no sun when it rains? I rushed home in the rain. As soon as I rushed into the door, I jumped at the computer. "Why does it rain? Why is there no sun when it rains? Where, where ... "I frowned and said to myself," Found it! " I cried happily. I see, because the water in rivers and oceans will become steam after being evaporated by sunlight, and the steam will rise into the air and become small water droplets, and the small water droplets will gather together to form clouds. When the water droplets in the cloud accumulate to the point where they can no longer be loaded, they will fall from the sky. This is rain. Then why is there no sun when it rains? In fact, the sun has been hanging in the sky. When it rains, we can't see the red sun because thick dark clouds cover the sun and the sky becomes dark. Dark clouds are much closer to us than the sun. They block the sun, just as the crown of a big tree blocks the sun. After the rain clears, the dark clouds disperse, and we can see the sun in the blue sky again!

I looked at the sky and it was raining harder and harder. It used to rain in Mao Mao, but now it rains cats and dogs! The more I think about it, the less I understand it, and the more I think about it, the more confused I am. Why are raindrops big and small? I went back to my computer desk and looked at it. "Oh! So it is! " I suddenly realized. It turns out that the size of raindrops is determined by the water vapor in the cloud. If the cloud is thin and there is not much water vapor in the cloud, the water droplets will be very small, and it can only rain in Mao Mao. If the clouds are thick and there is a lot of water vapor in the clouds, water droplets will collide with each other and merge into larger raindrops. It will rain heavily at this time. Rain is very important to life on earth. Plant growth needs rainwater, which flows to rivers and lakes and can provide us with daily water. The rain fell on the leaves and washed away the dust on them. After the rain, the air is much fresher! But rain also has disadvantages. If it rains too hard and for too long, it may cause floods and mudslides. ...

Rain, you really make people love and hate!