Final answer:
Dams are structures that use flowing water to generate electricity, which is known as hydroelectric energy.
Step-by-step explanation:
Dams are large structures located along rivers that use the river's flow to turn turbines and generate electricity. This process is known as hydroelectric energy. Hydroelectric energy is a renewable source of energy that harnesses the power of flowing or falling water to generate electricity. Dams are built to control the flow of water and create a reservoir, which can then be used to turn turbines and produce electricity.
Learn more about Hydroelectric Energy