How do droplets become heavy enough so that the droplets fall as rain or snow?

How does a water droplet become snow?

A: A snowflake begins to form when an extremely cold water droplet freezes onto a pollen or dust particle in the sky. This creates an ice crystal. As the ice crystal falls to the ground, water vapor freezes onto the primary crystal, building new crystals – the six arms of the snowflake. That’s the short answer.

How do cloud droplets become large enough to fall as precipitation?

Water droplets may grow as a result of additional condensation of water vapor when the particles collide. If enough collisions occur to produce a droplet with a fall velocity which exceeds the cloud updraft speed, then it will fall out of the cloud as precipitation.

How do cloud droplets become raindrops?

Water vapor in the atmosphere cools and condenses on a particle, such a dirt, dust or soot. This creates a cloud and when the cloud becomes saturated (full of moistures), water is released as raindrops.

How does the rain fall?

Raindrops fall to Earth when clouds become saturated, or filled, with water droplets. Millions of water droplets bump into each other as they gather in a cloud. When a small water droplet bumps into a bigger one, it condenses, or combines, with the larger one.

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How is rainfall caused explain it with the help of a diagram?

When water on the Earth’s surface is heated by the Sun, it evaporates and turns into water vapour which rises into the air. When the air cools it condenses around some dust or other particles in the air, called condensation nuclei. These small droplets then become visible as clouds.

Why is snow not water?

Why snow does not rehydrate, contrary to popular belief

Eating snow is not the same as consuming water because snow is a solid that must melt before it becomes a fluid. Cells and organs in the body need water to be in a liquid state, so the body must work to heat and melt the snow once it is eaten.

What must happen in order for a cloud droplet to fall as precipitation?

Cloud droplets must increase in size in order to fall as precipitation. … Snow forms in supercooled clouds by the: Condensation of water into ice crystals.

Why do cloud droplets fall slowly?

Clouds can hold an enormous amount of water. … In fact, the small water droplets that make up clouds do fall slowly. However, the drag force of the air dominates over the gravitational force for small particles.

How do cloud droplets grow larger?

Turbulent currents in the clouds provide the first collisions between droplets. The combination forms a larger drop which can further collide with other droplets, thus growing rapidly in size. As the drops grow, their fall velocity also increases, and thus they can collide with slower falling droplets.

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