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U.S. Energy Sources, 2006–2012
Here's a breakdown of the sources of energy in the United States for years 2006, 2009–2012: 2012 Oil 35% Natural gas 25% Coal 20% Nuclear 8%…geothermal energy
(Encyclopedia) geothermal energy: see energy, sources of.free energy
(Encyclopedia) free energy or Gibbs free energy, quantity derived from the relationships between heat and work studied in thermodynamics and used as a measure of the relative stability of a physical…dark energy
(Encyclopedia) dark energy, repulsive force that opposes the self-attraction of matter (see gravitation) and causes the expansion of the universe to accelerate. The search for dark energy was…kinetic energy
(Encyclopedia) kinetic energy: see energy.atomic energy
(Encyclopedia) atomic energy: see nuclear energy.thermonuclear energy
(Encyclopedia) thermonuclear energy: see nuclear energy.solar energy
(Encyclopedia) solar energy, any form of energy radiated by the sun, including light, radio waves, and X rays, although the term usually refers to the visible light of the sun. Solar energy is needed…nuclear energy
(Encyclopedia) CE5 Graph of binding energy per nucleon as a function of mass number nuclear energy, the energy stored in the nucleus of an atom and released through fission, fusion, or…activation energy
(Encyclopedia) CE5 Energy profile of an exothermic reaction: Although the total energy of the products is less than that of the reactants, the activation energy must be added to weaken or break…Trending
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