why is Dirt or Dust always Black/Brown/Yellow/Brownish yellow in color!!???
2006-07-05 06:09:33 · 9 answers · asked by AKMA_SIST 2 in Science & Mathematics ➔ Other - Science
you are all talking of soil..
wht abt clothes?
wht abt dirt in our body?..etc....
2006-07-05 06:17:24 · update #1
The color of dirt varies due to the mix of mineral contents. Red and yellow soils have a high concentration of iron oxides.
Brown and black may be humus, decaying vegatation.
For example, if we traveled around the earth collecting samples of dirt by color we would find most of the shades of yellows and reds, all the brown shades and black. Soils having blue color probably do not exist.
Further reading: http://soils.usda.gov/education/resources/k_12/lessons/color/
2006-07-05 06:27:34 · answer #1 · answered by Anonymous · 2⤊ 1⤋
its a result of the minerals dissolved in there. they have different pigments which result in different colors. most minerals dissolved in soil just happen to be those of brown, black, and red.
2006-07-05 06:13:48 · answer #2 · answered by Newtibourne 2 · 0⤊ 0⤋
I must agree that it depends upon the mineral make up of the sample you are viewing
2006-07-05 06:15:47 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Its the principal colour of soil.
2006-07-05 06:15:44 · answer #4 · answered by ag_iitkgp 7 · 0⤊ 0⤋
Just look at any terrorists, politician, and tort lawyers face.
2006-07-05 06:13:26 · answer #5 · answered by Anonymous · 0⤊ 0⤋
cuz it's on the ground. has the ground ever been white or yellow or blue? huh has it!!!!!
2006-07-05 06:15:28 · answer #6 · answered by Say_say26 1 · 0⤊ 0⤋
the different minerals color it.
2006-07-05 06:12:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋
because it just is....that's like asking why is wood brown........it just is
2006-07-05 06:13:55 · answer #8 · answered by sa-da-tay 4 · 1⤊ 0⤋
brown??!!
2006-07-05 12:46:15 · answer #9 · answered by ? 2 · 0⤊ 0⤋