burning coal is an energy source and it is very important.
coal is found from charcoal..........a special kind of rock found about 4 feet below earths surface
No. Anthracite coal is a metamorphic rock.
Coal is a form of rock. It is an organically formed sedimentary rock.
Peat (not much of a rock).
Coal is classified as a sedimentary rock.
Bituminous coal is consided a sedimentary rock. Anthracite coal is bituminous coal that has been metamorphosed by great pressure and heat and is considered a metamorphic rock.
It is a metamorphic rock . Also the coal is sometimes considered a sedimentary rock.
Coal is a sedimentary rock. However, harder forms of coal, because of exposure to elevated temperature and pressure, are metamorphic rock.
Coal forms from the remains of plants that have been buried in Earth's crust for millions of years. Over time, heat and pressure from the layers of rock above it compress the plant material, forming coal. This process of transformation from plant material to coal is part of the rock cycle, as coal is a type of sedimentary rock.
there is not a certain size a coal rock can be because they come in all sizes.
No, coal is a sedimentary rock composed mostly of the remains of ancient vegetation (except for anthracite coal which is a metamorphic rock, see image above)..
no coal doesn't have the 5 characteristics of a rock