Thursday, 21 July 2016

describe the importance of non-renewable fossil fuels, renewable energy supplies, nuclear power and fuelwood; globally and in different countries at different levels of development

•non-renewable
          •they are finite e.g oil, coal, gas

•fossil fuels
          •they are energy resources taking many years to replace

•renewable resources
          •energy resources that are sustainable e.g geothermal, wind, HEP, wave and tidal power 

•change in world energy production
          •all energy sources are increasing in importance
          •some dips may refer to world economy 
          •coal, oil and natural gas are constantly increasing, but decreasing in percentage of world use - from 90% to 80%
          •hydro and nuclear power is emerging due to fears of nuclear disaster and is too expensive 

•coal, natural gas, nuclear, hydro and other are increasing in percentage use 
•oil and biofuels and waste are decreasing in percentage use
          •in the next few years, Asia Pacific will be using the most energy 


•reasons for the increase in demand for resources 
          •population growth
                    •more people need to use these resources in order to survive
                    •use of heating for the population

          •economic development 
                    •fuel for industry and manufacturing growth
                    •new countries rely on energy to support infrastructure 
                    
          •increasing wealth
                    •more are able to afford better lifestyles, which use energy resources 
                    •bigger houses 
                    •holidays and private forms of transport use a large carbon footprint

          •technological advances
                    •use of phones and the internet
                    •usage of appliances that are electrical 
       

             

•energy consumption 
          •countries above the north line of the equator use more energy  
          •the MEDC’s tend to use the most
          •countries that produce some of the largest amounts of oil also use the most
          •countries which are more developed, but have the shortest histories use the most e.g (UAE, USSR, AU and the USA) 
          •the lowest are mostly LEDCs or countries with longer histories e.g (UK and China) 



•primary energy regional consumption
          •oil
                    •a very high overall percentage use oil globally, but Asia uses the least 
                    
          •coal
                    •variety - prominent in larger areas
                    •1% in the middle east where other resources are cheaper
                    •lots of use in NICs where other technological means isn't as advanced 
                    
          •natural gas
                    •it’s found in more consistent climates - 50 % in the middle East, high else where apart from Asia 
                    
          •hydro-electricity 
                    •not common in areas with lots of land, popular in Latins, not very common

          •nuclear 
                    •not popular overall
                    •most popular in MEDCs, highly unpopular in the Middle East

          •renewables 
                    •not very popular in all countries - 1-8% in all 



          •the most developed countries tend to use a wide mix of energy sources as they are able to invest in domestic energy potential and to buy energy from abroad 

          •high investment is required for nuclear electricity means only a limited number of countries produce it this way 

          •richer countries have been able to invest more into renewable energy resources of energy

          •LEDC energy demand will grow due to population growth and economic development 



•advantages of higher energy consumption 
          •electricity makes household tasks easier 
          •modern transport systems are based on oil use
          •industry requires high energy to make it work 

•disadvantages of higher energy consumption 
          •there are concerns we are using it too quickly, and that we will soon run out of supplies 
          •creates air pollution 
          •interdependence of supply may lead to conflict 
          •safety concerns of extraction 

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