P3.1 How much energy do we use? The global demand for energy is continually increasing. Our population is growing – we already have more people on the planet than ever before. As well as this, modern lifestyles demand transport and communications technology – which...
P3.2 How can electricity be generated? Electricity is a SECONDARY ENERGY SOURCE because we use primary sources to produce it – these primary sources can be non-renewable or renewable. Electricity is convenient because: It is transmitted easily over distance, through...
P3.3 Which energy sources should we choose? Ways to save energy In the home In the workplace National context ● More efficient appliances, e.g. a condensing boiler could save £190 per year ● Double glazing – possible savings of £130 per year ● Loft insulation –...