Where does dust come from and why does it reappear so soon after we dust?

Answer 1

If you live in Kansas, brown dust comes from Nebraska with the North wind, and red dust from Oklahoma with the South wind. The color of the sky can many times tell you which way the wind is blowing.

Dust is made by abrading one material with another. The small particles are easily borne by even a light breeze, and precipitate out of the air whenever and wherever the air movement is sufficiently slowed or stopped. Water (rain) precipitates the dust faster, reforms it into mud, which dries out to be soil. Grass is usually the best thing to prevent winds from picking up dust. The interlocking root system covers soil and protects it from the wind.

Answer 2

Terrestrial dust is mostly tiny fragments abraded from larger things; some of it may be even smaller things aggregating together to form motes of dust.

The larger things that turn to dust can be almost anything in the world, from shoes (one study found fragments of shoe leather to be a significant part of the dust in Grand Central Station) to ships to sealing wax, not to mention cabbages (fragments of dried vegetable matter) and kings (especially if cremated).

Wind-driven dust composed of fragments of stone and clay is so powerful that over the millennia it has cut fantastically shaped canyons and pillars in the badlands of the American West. Drought created the Dust Bowl with its penetrating clouds of dry plowed soil; the fires of ancient Plains Indians probably added to the dust in teepees; soot from unburned automobile fuel plagues city apartments.

Dust knows no borders, and dust from volcanic ash lingers in the upper atmosphere to produce brilliant sunsets thousands of miles away from the eruption.

As for why dusting seems worse than futile, one reason is that a dustcloth may simply stir up dust temporarily while the friction simultaneously creates a static electric charge. Charged particles of dust are attracted to surfaces with the opposite charge. An antistatic spray may help by providing a very thin layer of insulation between the opposite charges..

Answer 3

dust are major because of the fast winds tht cause the mud to flow in the air and spread it all over the place...if ur talkin abt the house..
as a fact 70% of the dust formed in the house r frm the humans itself..!!
like dead skin, hairs...etc..

Answer 4

Because of so many pollutants in the air today. Sounds strange but I remember sitting at home when I was a child watching particles floating in the air, while the light shown through the door. You could count them there were so few.

Today there are many.........

Answer 5

Dust is all around us we just don't see the particles until sunlight hits it. Dust comes from clothes, curtains, carpet, furniture, animals, you name it , it is there :)