LEARNING OBJECTIVES
                   1.7.2 Energy resources                                   Supplement 
                   Core                                                     • Understand that the Sun is the source of energy for 
                   • Describe how electricity or other useful forms of      all our energy resources except geothermal, nuclear and 
                   energy may be obtained from:                             tidal 
                   – chemical energy stored in fuel                         • Show an understanding that energy is released by 
                    – water, including the energy stored in waves, in       nuclear fusion in the Sun
                   tides, and in water behind hydroelectric dams 
                   – geothermal resources 
                   – nuclear fission                                        • Recall and use the equation: 
                   – heat and light from the Sun (solar cells and panels)   efficiency = useful energy output
                   – wind                                                                             energy input        × 100%
                   • Give advantages and disadvantages of each              • efficiency = useful power output
                   method in terms of renewability, cost, reliability,                               Power input          × 100%
                   scale and environmental impact 
                   • Show a qualitative understanding of efficiency
      Electricity
                              Electricity is known as a 
                             secondary energy source 
                             because it is produced using 
                             primary energy sources (eg. 
                              Coal, nuclear fuel, wind 
                                  power).
      How is electricity generated?
        Hydroelectric 
                 Electricity
      How is electricity generated?
                  Wind 
        Hydroelectric 
                 Electricity
      How is electricity generated?
                  Wind 
        Hydroelectric       Nuclear
                 Electricity