Fig. 3.1 is a cross-section of a barrage constructed across a tidal bay. This barrage forms part of a tidal power station.
Fig. 3.1 labels: barrage, low water level, open sea, gates, turbine connected to generator, high water level, tidal bay.
The gates are lifted open as the tide rises. They are lowered to shut at high tide. Fig. 3.1 shows the water levels in the open sea and the tidal bay at low tide. With the gates lifted, water flows through the turbine.
(a)[3]
Complete the sentences to show the energy transfers that occur when the gates are opened.
"________ energy of the __________ in the __________ is transferred to __________ energy in the rotating __________. This energy is used in the generator to produce electrical power."
(b)[2]
State one advantage and one disadvantage of tidal power as an energy resource.
(c)[1]
State the principal source of energy for tidal energy.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “the gravitational potential” …