(a(i))[1]
State the energy source of a geothermal power station.
(a(ii))[2]
Complete the sentence about useful energy transfer in the power station. The generator changes ................................................ energy into ................................................ energy.
(b(i))[2]
State two advantages of a geothermal power station over a coal-fired power station.
(b(ii))[1]
State one disadvantage of using geothermal energy instead of coal in a power station.