Fossil Fuels Crossword

The amount of energy contained within a given volume or mass of an energy source.Gasoline has a higher energy density that does dry wood,which in turn has a higher energy density than wet wood
A measure of the fraction of energy used relative to the total energy available in a given source
Combustible deposits in Earth’s crust,composed of the fossils of prehistoric organisms.Coal,oil, and natural gas are three types
Black, combustible solid composed mainly of carbon,water, and trace elements found in Earth’s crust; formed from remains of ancient plants
A thick, yellow to black, flammable liquid hydrocarbon mixture found in Earth’s crust; formed from the remains of ancient microscopic aquatic organisms
A mixture of energy-rich gaseous hydrocarbons that occurs,often with oil deposits, in Earth’s crust
The extraction of mineral and energy resources near Earth’s surface by first removing the soil,subsoil, and overlying rock strata
The extraction of mineral and energy resources from deep underground deposits
Pollution caused when sulfuric acid and dangerous dissolved materials such as lead,arsenic, and cadmium wash from coal and metal mines into nearby lakes and streams
Type of air population in which acid falls from the atmosphere to the surface as precipitation or as dry acid particles
Process of removing any material-sulfur or metals,for example-from polluted emissions or solid waste and selling it as a marketable product
A clean-coal technology in which crushed coal is mixed with limestone to neutralize the acidic sulfur compounds produced during combustion
Underground geologic structures that tend to trap any oil or natural gas if it is present
Point at which global oil production has reached a maximum rate
A liquid or gaseous fuel that is synthesized from coal and other naturally occurring resources and used in place of oil or natural gas
Form of government support given to a business or institution to promote that group’s activity