How Is Rain Formed In Clouds - Web what causes rain? Within a cloud, water droplets condense onto one another,. Web the rain cloud appears black or gray. Clouds are made of water droplets. Clouds form when air becomes saturated, or filled, with water vapor.
Web the rain cloud appears black or gray. Clouds are made of water droplets. Clouds form when air becomes saturated, or filled, with water vapor. Within a cloud, water droplets condense onto one another,. Web what causes rain?