What Is Rain?

Have you ever noticed that it rains only when there are clouds? This is because rain comes from clouds. Clouds are made of drops of water or ice. Clouds form when water vapor in the air becomes so cold it turns into water. Some of the drops of water group together to make larger drops of water. Other drops of water become so cold that they turn to ice. When the water drops or ice bits become heavy enough, they fall from the sky as rain or snow.