Final answer:
Still waters generate energy through hydroelectric power generation by storing water behind a dam and using turbines to convert its gravitational potential energy into electrical energy.
Step-by-step explanation:
Still waters also generate energy through hydroelectric power generation. Hydroelectricity is generated by storing water behind a dam and then letting some of it run through generators in the dam to turn them. The gravitational potential energy of the stored water is used to produce electrical energy with the help of a turbine.