Video encyclopedia





Coal 101


How is Coal Formed? - Geography for Kids | Educational Videos by Mocomi


What is Coal - More Science on the Learning Videos Channel


Logan Halstead - Dark Black Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a fossil fuel that forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes. The geological processes take place over millions of years.
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    • Etymology 

    • Geology 

    • History 

    • Emission intensity 

    • Chemistry 

    • Coal as fuel to generate electricity 

    • Coal industry 

    • Damage to human health 

    • Damage to the environment 

    • Coal pollution mitigation 

    • Economics 

    • Politics 

    • Opposition to coal 

    • Transition away from coal 

    • Cultural usage