Why Some Clouds Rain And Others Don T Youtube With little relief in sight for california's record drought, scientists are trying to learn why some clouds rain and other don't. as lauren sommer of kqed says, they're finding surprising answers. That's what a cloud is, after all, millions of water droplets. but prather is looking at tiny particles in the air. prather: pollution, sea spray, dust, smoke. sommer: they're the seeds of a rainstorm. the water inside a cloud sticks to them, growing larger and larger until you get a raindrop or snowflake. large pumps on the trailer next to us.
Why Some Clouds Rain And Others Don T Youtube It seems like such a basic question, but “we really don’t understand why some clouds drop rain and others don’t,” prather says. at the heart of this mystery is the physics of ice formation. a pure cloud droplet can cool to –40ºf before it freezes, and many clouds on earth never get anywhere near this cold. If the snowflake or graupel pellet continues to fall into air with temperatures above freezing, it will melt and become a raindrop. in alaska, this often happens below the level of the cloud base. snow is more reflective than rain, so if you look away from the sun at precipitation falling from a distant cloud, the fall streaks may look brighter. Here’s why some clouds don’t produce rain: insufficient moisture. a primary reason some clouds don’t produce rain is due to insufficient moisture. for a cloud to generate rain, it must contain enough water vapor. in some cases, clouds form in relatively dry air, which means there isn’t enough water vapor to condense into large enough. What causes rain? clouds are made of water droplets. within a cloud, water droplets condense onto one another, causing the droplets to grow. when these water droplets get too heavy to stay suspended in the cloud, they fall to earth as rain. come to think of it, what makes it snow, hail, and sleet? all these forms of water don’t fall out of a.
Curious Kids Why Does Rain Only Come From Grey Clouds Here’s why some clouds don’t produce rain: insufficient moisture. a primary reason some clouds don’t produce rain is due to insufficient moisture. for a cloud to generate rain, it must contain enough water vapor. in some cases, clouds form in relatively dry air, which means there isn’t enough water vapor to condense into large enough. What causes rain? clouds are made of water droplets. within a cloud, water droplets condense onto one another, causing the droplets to grow. when these water droplets get too heavy to stay suspended in the cloud, they fall to earth as rain. come to think of it, what makes it snow, hail, and sleet? all these forms of water don’t fall out of a. Less light is reflected. the rain cloud appears black or gray. clouds form when air becomes saturated, or filled, with water vapor. warm air can hold more water vapor than cold air, so lowering the temperature of an air mass is like squeezing a sponge. clouds are the visible result of that squeeze of cooler, moist air. Some droplets fall through the cloud and coalesce into raindrops on their way down. as more and more droplets join together they become too heavy and fall from the cloud as rain. warm air can hold more moisture than cool air. when the warmer air is cooled and the moisture condenses, it often rains more heavily.
Why Are Some Clouds Darker Than Others Less light is reflected. the rain cloud appears black or gray. clouds form when air becomes saturated, or filled, with water vapor. warm air can hold more water vapor than cold air, so lowering the temperature of an air mass is like squeezing a sponge. clouds are the visible result of that squeeze of cooler, moist air. Some droplets fall through the cloud and coalesce into raindrops on their way down. as more and more droplets join together they become too heavy and fall from the cloud as rain. warm air can hold more moisture than cool air. when the warmer air is cooled and the moisture condenses, it often rains more heavily.
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