Water Cycle
The water cycle is how water moves nnd changes on the Earth.
It is a cycle, because it doesn't have a beginning or an end. It is important, because it gives us water to drink. It also makes plants for our food.
The warm air moves up and becomes cold. Then it comes down - it rains. Then little wet drops change into millions of drops of water and make clouds. When the clouds come down it may rain. When the air become colder, more drops of water are formed. When there are very many drops of water, they become so heavy that the clouds cannot hold them, so they fall down on the ground. This is rain. When it is very cold, these drops become little crystals of ice and fall down on the ground. This is snow. When and why does the wind blow? When the air becomes warm, it goes up in the air and the cold air moves down. So the air moves and the wind blows. Sometimes the wind blows and all the trees shake.