To mark or delineate with charcoal.
A hard, black material that is burned as fuel
The metamorphic product of stratified plant remains. It contains more than 50 percent carbon compounds and burns readily.
Coal is a burnable carbonaceous rock that contains large amounts of carbon. Coal is also a fossil fuel—a substance that contains the remains of plants and animals and that can be burned to release energy. Coal contains other elements such as hydrogen, oxygen, and nitrogen; has various amounts of minerals; and is itself considered to be a mineral of organic origin.
a black or brown material that was created when plants partially decayed without oxygen, but with moisture, pressure, and high temperatures.
A brown or black sedimentary rock that forms from accumulated plant debris. A combustible rock that contains at least 50% (by weight) carbon compounds.
A black or brownish black solid, combustible carbon-rich substance formed by the partial decomposition of vegetable matter without access to air. Coal is one of the most important of the primary fossil fuels. It is indispensable to life and constitutes humankind's main source of energy.
The primary fuel of integrated iron and steel producers.
A combustible organic material containing more than 50% by weight and more than 70% by volume of carbonaceous (i.e.: rich in carbon) material, including inherent moisture. Coal is formed through compaction and induration of plant remains similar to those in peat.
kãul] = black fossil, extracted from the ground and used as fuel (Ro. carbune)
A carbonized matter used as fuel, an ember.
A brown-to-black, organic, combustible, sedimentary rock. It is formed through a progressive alteration known as coalification in which plant remains are physically and chemically altered by pressure, heat and time. Coals are classified by the degree of coalification. (See rank)
Black sedimentary rock composed mainly of plant matter. It is used as a fuel.
A carbonaceous rock mined for use as a fuel.
a fossil fuel that can burn to create energy
A natural dark brown to black material used as a fuel, formed from fossilized plants and consisting of amorphous carbon with various organic and some inorganic compounds.
Including lignite and peat.
A fossil fuel made from the remains of plants.
a readily combustible black or brownish-black rock whose composition, including inherent moisture, consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material. It is formed from plant remains that have been compacted, hardened, chemically altered, and metamorphosed by heat and pressure over geologic time.
coal is a form of stored solar energy. It is created from the remains of plants that have been concentrated by heat and pressure for millions of years. Coal is found in various forms or "grades," which depend on the ratio of carbon mass to energy content. Represented in descending order of hardness and energy content per pound, these grades are anthracite, bituminous, sub-bituminous and lignite.
burn to charcoal; "Without a drenching rain, the forest fire will char everything"
a black stone which derives its flammability from its containing much of the element fire , admixed with some air and earth , as evidenced by the smoke and ashes produced by its combustion
a sweet carbonated drink , usually with caramel flavoring and containing caffeine
a fossil fuel comprised primarily of carbon formed by the decomposition of plant matter in non-marine environments billions of years ago; a fossil fuel.
A fuel consisting of black or brown rock that is taken out of the ground at large mines.
Coal is the dirtiest of all fossil fuels. It is used for just under 40 percent of global electricity production, but because of its higher carbon content, releases well over half of the CO2 emissions in the power sector. Planet Earth has enormous reserves of coal – estimated by the World Energy Council and BP at 985 billion tons. Current consumption is around 4.4 billion tons a year. While coal use is falling in Western Europe, it continues to rise in the USA and Asia. Burning even a fraction of these coal reserves, plus the smaller reserves of oil and gas, would move us into the danger zone of temperature increases of 3 to 4 degrees Celsius and above. Back up
During Carboniferous period much of world was covered with vegetation growing in swamps. This vegetation died and became submerged under water. As decomposition took place, vegetable matter lost oxygen and hydrogen atoms, leaving a peat deposit with a high percentage of carbon. As time passed, layers of sand and mud settled from water over some of peat deposits. Pressure of these overlying layers, as well as movements of earth's crust and sometimes volcanic heat, acted to compress and harden deposits, thus producing coal.
the fossilised remains of plant material.
A black or brownish-black solid combustible substance formed by the partial decomposition of vegetable matter without access to air. The rank of coal, which includes anthracite, bituminous coal, subbituminous coal, and lignite, is based on fixed carbon, volatile matter, and heating value. Coal rank indicates the progressive alteration from lignite to anthracite. Lignite contains approximately 9 to 17 million Btu per ton. The contents of subbituminous and bituminous coal range from 16 to 24 million Btu per ton and from 19 to 30 million Btu per ton, respectively. Anthracite contains approximately 22 to 28 million Btu per ton.
A black or brownish black solid combustible substance formed by the partial decomposition of vegetable matter without free access of air and under the influence of moisture and often increased pressure and temperature that is widely used as a natural fuel.
a general name given to stratified accumulations of carbon-rich material derived from vegetation. The starting point for coal formation is ususally peat or some similar accumulation of partially decayed plant matter. By the process of compaction, heating, and chemical alteration, the peat is converted by a series of stages into coal. The type of coalification corresponds to the amount of heating that a peat has undergone: Peat Lignite (brown coal) Bituminous coal Anthracite
Manufactured gas made by distillation or carbonization of coal in a closed coal gas retort, coke oven or other vessel.
A readily combustible rock containing more than 50% by weight and more than 70% by volume of carbonaceous material, including inherent moisture, formed from compaction and induration of variously altered plant remains similar to those in peat
A member of a group of easily combustible, organic sedimentary rocks composed mostly of plant remains and containing a high proportion of carbon.
fossil peat; a layered rock composed largely of chemically and physically altered plant remains mixed with a lesser amount of inorganic material (ash)
Solid, brittle, combustible rock composed of at least 50% (by weight) of carbonaceous material; formed from altered plant remains and classified by plant material(type), impurities (grade) and degree of metamorphism (rank).
A fossil fuel consisting of carbonized plant material.
A combustible rock of organic origin composed mainly of carbon, hydrogen and oxygen with lesser amounts of nitrogen, sulphur and other elements. Coal is formed from accumulated vegetable matter that has been altered by decay and by various amounts of heat and pressure.
Coal is a fossil fuel that currently provides about half of the country’s electricity. Coal power plants create more emissions per unit of generated electricity than other fuels, and are required to install pollution control devices to curb pollution. Like natural gas and oil, coal is a nonrenewable resource because it cannot be replenished on a human time scale.
A black or brownish/black solid, combustible substance formed by the partial decomposition of vegetable matter without access to air. Types of coal are anthracite, subanthracite, bituminous, subbituminous, and lignite; the categories are based on fixed carbon, volatile matter, coking properties, and heating value. The contents of subbituminous and bituminous coal range from 16 to 24 million Btu per ton and from 19 to 30 million Btu per ton, respectively. Anthracite contains approximately 22 to 28 million Btu per ton.
A hydrocarbon-based fossil fuel composed of the remains of land plants which have been transformed into a solid mass of carbon, hydrogen and oxygen through heat and pressure resulting from burial
A black or brownish black solid, combustible substance formed by the partial decomposition of vegetable matter without access to air. The rank of coal, which includes anthracite, bituminous coal, subbituminous coal, and lignite, is based on fixed carbon, volatile matter, and heating value. Coal rank indicates the progressive alteration, or coalification, from lignite to anthracite. See anthracite, bituminous coal, subbituminous coal, lignite.
Coal is a combustible rock of organic origin composed mainly of carbon (50-98%), hydrogen (3-13%) and oxygen, with lesser amounts of nitrogen, sulphur and other elements. Some water is always present, as are grains of inorganic matter that form an incombustible residue known as ash.
Burnable rock containing carbon and other elements and minerals; coal was formed from the remains of trees and plants millions of years ago
obtained by the controlled combustion of various types of wood, it serves for the clarification and the transfer of aftertaste to some distils (charcoal mellowing = coal taste, typical of Tennessee whiskey)
a hard, black substance formed from plants that lived about 300 million years ago
a carbon-rich mineral deposit made of the remains of fossil plant life. It is first deposited as peat, but over time is buried, compressed and heated which changes it physically and chemically. There are different grades of coal depending on the amount of water and gases left inside the deposit, and the percentage of carbon present.
Black or brown rock, formed under pressure from organic fossils in prehistoric times, that is mined and burned to produce heat energy.
A solid, brittle, more or less distinctly stratified combustible carbonaceous rock, formed by partial to complete decomposition of vegetation; varies in color from dark brown to black; not fusible without decomposition and very insoluble.
Solid, combustible mixture of organic compounds with 30-98% carbon by weight, mixed with various amounts of water and small amounts of sulfur and nitrogen compounds. It forms in several stages as the remains of plants are subjected to heat and pressure over millions of years.
Fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period.
The most abundant fossil fuel, derived from prehistoric plant materials that were exposed to high temperatures and pressure.
A fossil fuel made of sedimentary organic rock that contains more than 40 percent carbon by weight after moisture has been removed. It is formed from plant matter that decayed in swamps and bogs that has been compressed and altered by geological processes over millions of years. Four main types of coal have been identified and ranked based on how much carbon and energy they contain: lignite, subbituminous coal, bituminous coal, and anthracite.
Carbon-containing rocks, derived from plant remains altered by increased pressure and temperature and various chemical processes. A fossil fuel.
Rock formed from the fossilised remains of plants. The largest volume of coal originates from the Carboniferous period (354 million years ago).
A solid fossil fuel found in the earth. Coal is burned to make electricity.
A fossil-fuel deposit originating from metamorphosed plant material [LCOTE
is a mineral made of decayed plant material that was buried and compressed for hundreds of millions of years. One pound of coal can be used to produce enough electricity to light 10 100-watt incandescent light bulbs for an hour.
Coal is a type of sedimentary rock that is made of compacted and lithified organic (mostly plant) remains that have been compressed by pressure and exposed to heat. Coal is a fossil fuel.
A combustible mineral substance (carbonized vegetable matter). In this report, the term includes its derivative, coke, which is formed by destructive distillation or imperfect combustion. Only statistics on the number of households using coal are collected in RECS. (See Fuel.)
Coal (IPA: ) is a fossil fuel extracted from the ground by coal mining, either underground mining or open-pit mining (surface mining). It is a readily combustible black or brownish-black rock. Coal is a sedimentary rock, but the harder forms, such as anthracite coal, can be regarded as metamorphic rocks because of later exposure to elevated temperature and pressure.