c) The Air and the Water
The water cycle shows how water moves and 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 water plants for our food.
The warm air comes up and becomes cold. Then it comes down-it rains. Then little wet drops change into millions of drops of water and become clouds. When the clouds cover/go up the sky it may rain.When the air becomes colder, more drops of water are formed. When there are very many drops of water, they are 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 make 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 and all the trees shake