In a pumped-storage hydroelectric power station, water is pumped to an upper reservoir, transferring energy into a gravitational potential store. However, some energy is wasted due to friction and turbulence in the pipes.
State what happens to this wasted energy.
82 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations. Each one has a worked solution and a mark scheme showing where the marks go.