All clouds are made of many little drops of water. But not all clouds are alike. There are three kinds of clouds. Cirrus clouds are one kind. These are made of ice drops. They look very soft and light. Another kind of cloud is called a cumulus cloud. They are very large and deep and flat on the bottom. We usually see cumulus clouds on warm summer days and finally there are stratus clouds,which cover the whole sky. These clouds make the sky gray and the sun does not shine at all