Energy resources

What the syllabus asks of you

• Describe how useful energy may be obtained, 4 Know that radiation from the Sun is the main or electrical power generated, from: source of energy for all our energy resources (a) chemical energy stored in fossil fuels except geothermal, nuclear and tidal (b) chemical energy stored in biofuels (c) water, including the energy stored in waves, in tides and in water behind hydroelectric dams (d) geothermal resources (e) nuclear fuel (f) light from the Sun to generate electrical power (solar cells) (g) infrared and other electromagnetic waves from the Sun to heat water (solar panels) and be the source of wind energy including references to a boiler, turbine and generator where they are used
• Describe advantages and disadvantages 5 Know that energy is released by nuclear fusion of each method in terms of renewability, in the Sun availability, reliability, scale and environmental impact 6 Know that research is being carried out to investigate how energy released by nuclear fusion can be used to produce electrical energy on a large scale
• Understand, qualitatively, the concept of 7 Define efficiency as: efficiency of energy transfer (a) (%) efficiency = (useful energy output) / (total energy input) (× 100%) (b) (%) efficiency = (useful power output) / (total power input) (× 100%) recall and use these equations