Question

State the energy changes taking place in and around a hydroelectric power station when:
(i) Water flows into the reservoir from catchment area, such that level of water in the reservoir rises

Answer 1

Answer:

Rain or melting snow causes rivers to flow and fill dams built at some places. The potential energy of water held behind a dam is then transformed into mechanical energy (rotation) and the final transformation takes a place in a generator to electrical energy.

Answer 2

Answer:

When water from a dam falls on the water turbine, the potential energy of the water changes into its kinetic energy and this kinetic energy of water transferred to the blades of the turbine as the kinetic energy which rotates the turbine