The government of a country has committed to reducing its reliance on fossil fuels for its national electricity grid by investing in renewable energy sources.
State two reasons, apart from cost, for reducing the amount of fossil fuels burned to generate electricity.
Describe how a wind turbine generates electrical power.
Wind turbines can be expensive to install. State two other disadvantages of using wind turbines to generate electrical power.
The government also plans to install large-scale solar farms. Suggest one method of storing the electrical energy generated by solar panels so that it can be used when there is no sunlight.
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.