explain how rain clouds form

Rain clouds form when warm and moist air rises from the ground and cools as it rises higher in the atmosphere. This process is called convection. When the air cools, the moisture in it condenses, forming tiny water droplets that eventually form clouds. The condensation process is sped up by particles in the atmosphere called condensation nuclei. These particles can be dust, salt, smoke, or other particles that act as a surface on which water droplets form. The higher the air rises, the more water droplets form, and the more the air cools. Eventually, the air becomes so cool and saturated with water droplets that the droplets become too heavy to remain suspended in the air and they fall as precipitation. Fun Fact: Raindrops usually fall at speeds of about 20 mph, but during a heavy rainstorm, they can reach speeds of up to 25 mph!