explain the process of formation of coal?
how synthetic fibres changed our everyday life?
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synthetic fibres are usually used in the making of many items like cloths threads decoration items. the help the human life in places of beauty like nice synthetic dress or a synthetic table cloth. they are also easy to wash and light weight
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The environments or conditions under which these coals were formed: anthracite coal, bituminous coal,
lignite?
Coal formed millions of years ago when the earth was covered with huge swampy forests where plants - giant ferns, reeds and mosses - grew. As the plants grew, some died and fell into the swamp waters. New plants grew up to take their places and when these died still more grew. In time, there was thick layer of dead plants rotting in the swamp. The surface of the earth changed and water and dirt washed in, stopping to decaying process. More plants grew up, but they too died and fell, forming separate layers. After millions of years many layers had formed, one on top of the other. The weight of the top layers and the water and dirt packed down the lower layers of plant matter. Heat and pressure produced chemical and physical changes in the plant layers which forced out oxygen and left rich carbon deposits. In time, material that had been plants became coal.
Coals are classified into three main ranks, or types: lignite, bituminous coal, and anthracite. These classifications are based on the amount of carbon, oxygen, and hydrogen present in the coal. Coal is defined as a readily combustible rock containing more than 50% by weight of carbon. Coals other constituents include hydrogen, oxygen, nitrogen, ash, and sulfur. Some of the undesirable chemical constituents include chorine and sodium. In the process of transformation (coalification), peat is altered to lignite, lignite is altered to sub-bituminous, sub-bituminous coal is altered to bituminous coal, and bituminous coal is altered to anthracite
Synthetic fiber has made our life much easier. Synthetic fiber are man made fiber. They are made up from raw material. The most widely used synthetic fiber is cotton which is used in clothing like jackets,socks, jackets cushions and etc. then comes Nylon which is used to make the seat belts of car, socks, ropes, blankets etc. Rayon which is used to make bed sheets, carpets and etc
lignite?
Coal formed millions of years ago when the earth was covered with huge swampy forests where plants - giant ferns, reeds and mosses - grew. As the plants grew, some died and fell into the swamp waters. New plants grew up to take their places and when these died still more grew. In time, there was thick layer of dead plants rotting in the swamp. The surface of the earth changed and water and dirt washed in, stopping to decaying process. More plants grew up, but they too died and fell, forming separate layers. After millions of years many layers had formed, one on top of the other. The weight of the top layers and the water and dirt packed down the lower layers of plant matter. Heat and pressure produced chemical and physical changes in the plant layers which forced out oxygen and left rich carbon deposits. In time, material that had been plants became coal.
Coals are classified into three main ranks, or types: lignite, bituminous coal, and anthracite. These classifications are based on the amount of carbon, oxygen, and hydrogen present in the coal. Coal is defined as a readily combustible rock containing more than 50% by weight of carbon. Coals other constituents include hydrogen, oxygen, nitrogen, ash, and sulfur. Some of the undesirable chemical constituents include chorine and sodium. In the process of transformation (coalification), peat is altered to lignite, lignite is altered to sub-bituminous, sub-bituminous coal is altered to bituminous coal, and bituminous coal is altered to anthracite
Synthetic fiber has made our life much easier. Synthetic fiber are man made fiber. They are made up from raw material. The most widely used synthetic fiber is cotton which is used in clothing like jackets,socks, jackets cushions and etc. then comes Nylon which is used to make the seat belts of car, socks, ropes, blankets etc. Rayon which is used to make bed sheets, carpets and etc
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