2006-10-05 06:12:57 · 15 answers · asked by Rajesh D 1 in Education & Reference ➔ Homework Help
As already pointed out coal is the plant remains of prehistoric-historic forests. Coal is produced in the following stages:
Peat.
Lignite (or brown coal)
Sub bituminous
Bituminous
Anthracite.
Each stage represents the driving off of hydrogen due to heating and compaction.
The woods that went to to produce coal grow primarily in the Carboniferous Period (check the dates but roughly 300 million years ago). There are also deposits of brown coal from eastern Europe aged from the Tertiary Period (ie, after the dinosaurs).
Hope this helps.
2006-10-05 06:41:27 · answer #1 · answered by 13caesars 4 · 0⤊ 0⤋
Coal is ancient vegetation that has been crushed over millions of years as sedimentary deposits over it have become rock. Coal rests in layers, and so it's found in areas where this ancient rock can be exposed (surface mines) or where it's discovered deep underground, whence mines are used to recover the coal to the surface.
2006-10-05 13:21:24 · answer #2 · answered by scho2000 1 · 0⤊ 0⤋
coal is fossilised trees that fell a long time ago, we are talking pre historic forests, in time this is covered with layers of soil I think it may be referred to as strata the end result is coal as we know it . This in turn is found under ground in what is called seems, this is dug out as coal
2006-10-05 13:31:04 · answer #3 · answered by Peter T 2 · 0⤊ 0⤋
Visit these links
This link gives a detailed info on COAL
http://en.wikipedia.org/wiki/Coal
http://www.chem4kids.com is a very good site. Its about the basic chemistry stuff. There are links to that site which link you to some other good sites like biology4kids and all. If you wanna know more about it. Click this link!
Good Luck!
2006-10-05 13:21:23 · answer #4 · answered by Anonymous · 0⤊ 0⤋
coal mines, it is a raw material
2006-10-05 13:19:55 · answer #5 · answered by braslinbabe85 2 · 0⤊ 0⤋
Coal is it's own raw material.
It is mined from the ground cleaned up and sold for burning.
2006-10-05 13:15:28 · answer #6 · answered by my_iq_135 5 · 0⤊ 0⤋
Underground ,but today you usually get from a coal merchant
2006-10-05 13:23:29 · answer #7 · answered by taxed till i die,and then some. 7 · 0⤊ 0⤋
Freuchie filling station on the A92.
Fiver a bag and good solid stuff. Highly recommended.
2006-10-05 13:25:09 · answer #8 · answered by Anonymous · 0⤊ 0⤋
it is decaying materials that turn into peat and eventually into coal
2006-10-05 13:17:43 · answer #9 · answered by Anonymous · 0⤊ 0⤋
are you for real!
it comes from either deepcast mines or open-cast mines, its fossil fuel laid down millions of years ago, by organic material, i.e. forests, dead animals, other plants, etc
its the same stuff, that produces oil.....
2006-10-05 13:25:36 · answer #10 · answered by chris s 3 · 0⤊ 0⤋