National and global energy resources

• what are the main energy resources available for use on earth

  fossil fuels (coal, oil, gas) , nuclear fuel , bio-fuel , wind, solar, hydro - electricity , geothermal , the tides , the sun , water waves
• what is a renewable energy resource 


  one that is being replenished as it is used
• examples of uses of energy resources

  transport, electricity generation , heating
• why is non-renewable energy used 


  for more large scale energy supplies due to the large energy output per kilogram of fuel - renewable resources cannot provide such a large amount of energy as easily
• example of when renewable energy isnt reliable

  solar doesnt work at night , wind is only intermittent
• what is the environmental impact of energy extraction 


  fossil fuels involve destroying landscapes , wind turbines are visual pollution
• what is an environmental impact of the use of energy sources


  fossil fuels release harmful emissions , solar and wind create electricity with no emissions
• when and why were fossil fuels used alot 


  during the industrial revolution - easy to mine and provided lots of energy
• what is a problem with using energy resources


  It is easier to use energy resources due to increasing pressure to cope with the public’s increasing power demands but harder to solve environmental issues due to political, social, ethical and economic consideration