Different types of clouds can be largely seen in the sky due to the air pressure and the temperature of the sky. When the air is cold way up in the sky, the water droplets from which the clouds are formed condense and freeze. On the other hand, warm air makes these clouds to come down from the sky and land in as fog. The clouds that take up the form of fog cover the sky and are stretched out and are observed in stormy weather.
Since you see clouds floating over the sky, the air changes and temperature squeezes, which stretches them and gives them different shapes which are not definite, making the clouds different from one another. No wonder, when you check the sky every day, you have new clouds, and absolutely new sky in visibility, all thanks to the floating air.
