meltdown
Melting of the core of a nuclear reactor.
Subject:
Chapter 15 - Geologic Resources: Nonrenewable Mineral and Energy Resources
magma
Molten rock below the earth's surface.
Subject:
LPG
See liquefied petroleum gas.
Subject:
Liquefied petroleum gas (LPG)
Mixture of liquefied propane (C3H8) and butane (C4H10) gas removed from natural gas and used as a fuel.
Subject:
liquefied natural gas (LNG)
Natural gas converted to liquid form by cooling to a very low temperature.
Subject:
life cycle cost
Initial cost plus lifetime operating costs of an economic good. Compare full cost.
Subject:
kerogen
Solid, waxy mixture of hydrocarbons found in oil shale rock. Heating the rock to high temperatures causes the kerogen to vaporize. The vapor is condensed, purified, and then sent to a refinery to produce gasoline, heating oil, and other products. See also oil shale, shale oil.
Subject:
Identified resources
Deposits of a particular mineral-bearing material of which the location, quantity, and quality are known or have been estimated from direct geological evidence and measurements. Compare undiscovered resources.
Subject:
high-quality energy
Energy that is concentrated and has great ability to perform useful work. Examples are high-temperature heat and the energy in electricity, coal, oil, gasoline, sunlight, and nuclei of uranium-235. Compare low-quality energy.
Subject:
gangue
Waste or undesired material in an ore. See ore.
Subject:
Pages
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