Clouds are divided into the following types, depending on their height, density, expansion and transparency:
1. Cirrus clouds: These types of clouds are present from an altitude of 8000 meters to 12000 meters.
2. Cumulus clouds: These types of clouds are found at a height of 4000 meters to 7000 meters.
3. Stratus clouds: These clouds are like fog and are found closer the earth’s surface.
4. Nimbus clouds: These are black and dense clouds which are found closest to the surface of earth.