1. Created by: -Andrea Úbeda Ortega. -Daniel Sánchez Garrido. -Judith García Elvira. -Álvaro Alonso Lancho. -Myriam García Martínez. -Sergio García Ruiz.

2. What is an hydroelectric power plant? It is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. This is the fall of water from the dam into the turbine, making the movement of the blades which produces energy.

3. Which components have this type of power plants? The reservoir, the intake, the dam, the penstock,the generator, the turbine, the river and the power lines or switchyard. Reservoir: Most hydropower plants rely on a dam that holds back water, creating a large reservoir. Dam: as there is a large water level difference between the two sides of the dam,the dam has to withstand tremendous pressure from the water in the reservoir. Penstock: a large pipe that carries the water.

4. Turbine: The water strikes and turns the large blades of a turbine, which is attached to a generator above it by way of a shaft. The most common type of turbine for hydropower plants is the Francis Turbine, which looks like a big disc with curved blades. A turbine can weigh as much as 172 tons and turn at a rate of 90 revolutions per minute. Generator: As the turbine blade turn, so do a series of magnets inside the generator.

5. The hydroelectric power plant ; what you see in the last photo, is a place where the energy is transformed from cinetic energy and potential energy to electricity moving a turbine.

7. Which are the most important hydroelectric power plants in Spain? La Muela (Valencia) = 628 MW Sallente-Estany Gento (Lleida) = 451 MW Tajo de la Encantada (Málaga) = 360 MW Aguayo (Cantabria) = 339 MW Moralels-Llauret (Lleida) = 210 MW Guillena (Sevilla) = 210 MW Bolarque (Guadalajara) = 208 MW La muela (Valencia) the most important hydroelectric power plant in spain.

8. −No release of CO₂ − No fossil fuels required. − Only uses natural resources. − It´s cheaper at night. −It´s a renewable energy. −It doesn´t pollute. − Damage of the environment. − It has a long construction process. − The flooding of land to form the reservoir, and alteration of water flow exerts direct impact on soil (erosion), vegetation, wildlife and wild lands, climate and human population of the area.