Which energy form relies on water flow in rivers or dams to generate electricity?

• A. Wind Energy
• B. Geothermal Energy
• C. Water Energy
• D. Solar Energy

Answer: (C)

Hydropower harnesses the energy of moving water to generate electricity. In these systems, water flowing in rivers or released from a dam releases its potential energy (or kinetic energy) to spin a turbine. The turbine is connected to a generator, which converts that mechanical energy into electrical energy. This method is renewable when water flows naturally or is replenished by the water cycle, and it specifically uses water flow to produce power.

The other options rely on different sources: wind energy uses air movement to turn turbine blades; geothermal energy taps heat from within the Earth; solar energy collects sunlight with photovoltaic cells or solar collectors to produce electricity.