How it Works
How much energy is available in moving water all depends on its flow or fall. Fast moving/flowing water like the Columbia River carries a great deal of energy, yet a creek with a small amount of water will not have as much energy. Water falling rapidly from a very high point, like Victoria Falls, again has a lot of energy in its flow.
In both instances, the water flows through a pipe, or penstock, the pushes against and turns blades in a turbine to spin a generator to produce electricity. In a run-of-the-river system the force of the current applies the needed pressure, while in a storage system, water is accumulated in reservoirs created by dams. They release as needed to generate electricity.
Hydropower dams are very costly to build. The power comes from Washington, California, and it's renewable source, because it has a water cycle. The impact is negative on native plants and animals in and next to the river, but its positive for the people.
Some Advantages and Disadvantages
1) It can cause the relocation of people
2) It can cause changes in the environment
1) No waste or pollution produced
2) Electricity can be generated constantly
Famous Scientisits!!! :)
* He wrote the mathematical equation about the nature of energy
* He invented the light bulb
Albert Einsten's equation