How can rivers be used as an energy source?

Hydroelectricity: The movement of water can be utilized to drive wire coils that conduct electricity, as well as to spin turbines and magnets.

Direct mechanical Waterwheels can be turned to grind flour, cut wood, run looms, and other tasks by flowing water. This is arguably one of the earliest types.

Heat source: When water descends from a higher level, energy is released in the form of heat; this is especially evident at the base of a waterfall, where the water's temperature is noticeably warmer than at the top.

Rivers can be used as an energy source through hydropower, where the kinetic energy of flowing water is converted into electricity using turbines. This is typically achieved by constructing dams or diversion structures to control the flow of water and channel it through turbines, which then generate electricity.