8.2

=World energy sources=

8.2.1 Identify different world energy sources.

 * < ===. World Energy Source .=== ||= ===CO 2 Emission (Y/N)=== ||< ===. Prime Energy Source .=== ||
 * < Hydroelectric ||= No ||< Sun ||
 * < Wind ||= No ||< Sun ||
 * < Water Currents ||= No ||< Sun ||
 * < Tidal Energy ||= No ||< Moon & Sun's Gravity ||
 * < Solar ||= No ||< Sun ||
 * < Bio Fuels ||= Yes ||< Sun ||
 * < Fossil Fuels ||= Yes ||< Sun ||
 * < Nuclear Fission ||= No ||< Nucleus ||
 * < Geothermal ||= No ||< Energy in Earth's Core ||

Non-renewable energy sources have a finite supply on Earth.

 * ===. Renewable .=== || ===. Non-renewable .=== ||
 * Solar || Fossil Fuels (Oil, Gasoline, Coal, Natural Gas) ||
 * Hydroelectric || Uranium (Nuclear) ||
 * Tides (Waves) ||  ||
 * Wind ||  ||
 * Geothermal ||  ||
 * Biofuels ||  ||

The amount of fuel used affects

 * ====costs of purchasing / mining====
 * ====costs of transporting and storing====
 * ====costs of refining / enrichment====
 * ====environmental impact====

8.2.5 State the relative proportions of world use of the different energy sources that are available.
Only approximate values are needed 38 % Oil 24 % Coal 24 % Natural Gas 6 % Nuclear 4 % Biomass 3 % Hydroelectric 1 % Solar Heat, Wind, Geothermal, Solar PV combined

If you wish to see comparisons between 2007 and 2004 global energy source consumption, see website: []