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Book 16, Question 111 · Video

How Do Fog Nets Catch Water?

Video · 1:54 · Crafty Clover explains, from A Million Whys Book 16

Fog nets catch water by letting tiny fog droplets stick to a mesh! People stretch big nets across hilltops in dry places like the Atacama Desert. The droplets join together and tri

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How do fog nets catch water?

The Big Idea

Fog nets catch water by letting tiny fog droplets stick to a mesh! People stretch big nets across hilltops in dry places like the Atacama Desert. The droplets join together and trickle into tanks.

Fog Blows By

Step one: fog blows through the net. On a foggy hilltop in the Atacama Desert in Chile, wind pushes fog toward a big mesh net. The net is full of tiny holes.

Droplets Stick

Step two: droplets stick to the strings. Tiny droplets cling to the fibers and merge into bigger drops. When the drops get heavy, they run down.

Water Collected

Step three: the water is collected. Drops trickle into gutters along the bottom and then into tanks, ready to be piped away. A big net can collect many gallons a day. The water is used for farms and village taps.

A Closer Look

Let's take a closer look! Fog blows toward the net. Droplets stick to the mesh. They grow into bigger drops and run down. And the water fills a tank.

Quick Facts

Quick facts! The nets copy the way fog sticks to spiderwebs and leaves. Nature gave people the idea, and engineers copied it. Fog nets work with no electricity, just wind and gravity. Try the mist experiment with a grown-up.

Think Like a Scientist

Now, think like a scientist, with a grown-up! Spray a fine mist from a distance toward a window screen or net. Do drops form on the strings? Let them run down into a cup. Share what you discover with a grown-up.

Outro

Fog nets turn drifting fog into water for people, farms, and plants. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this