cloud is a visible mass of tiny water droplets or ice crystals suspended in the atmosphere. Clouds form when water vapor in the air condenses into liquid droplets or ice crystals, which occurs when the air becomes saturated with moisture and cools down. This process can happen when warm, moist air rises and expands, cooling as it goes higher in the atmosphere. The droplets or ice crystals then gather around particles like dust, forming the visible cloud. Clouds can vary in shape, size, and altitude, and they play a crucial role in Earth's weather and climate.