Syllabus concepts to know

• 7.2.1 Energy sources are both renewable and non-renewable.
• 7.2.2 Global energy consumption is rising with increasing population and with per capita demand.
• 7.2.3 The sustainability of energy sources varies significantly.
• 7.2.4 A variety of factors will affect the energy choices that a country makes.
• 7.2.5 Intermittent energy production from some renewable sources creates the need for energy storage systems.
• 7.2.6 Energy conservation and energy efficiency may allow a country to be less dependent on importing a resource.
• 7.2.7 Energy security for a country means access to affordable and reliable sources of energy.
• 7.2.8 The global economy mostly depends on finite reserves of fossil fuels as energy sources; these include coal, oil and natural gas.
• 7.2.9 Nuclear power is a non-renewable, low-carbon means of electricity production.
• 7.2.10 Battery storage is required on a large scale to meet global requirements for reduction of carbon emissions, but it requires mining, transporting, processing and construction, all of which produce emissions and pollution, and cause sociopolitical tensions.