Fig. 4.1 illustrates a hydroelectric system that generates electrical energy. The labels shown are reservoir, pipe, power station and water.
(a)[3]
Describe how the power station uses the water in the reservoir to produce electrical energy.
(b)[3]
State three advantages of generating electrical energy with a hydroelectric system rather than a coal-fired power station.
(c(i))[1]
The electric drill usefully converts electrical energy into ........ energy.
(c(ii))[1]
The second drill is less ........ than the first drill.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Water moves down from the reservoir” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI