Band 6.5 Sample: The diagram below shows how electricity is generated in a hydroelectric power station.
Introductory Statement:
The given diagram illustrates about how the electricity produced by using a hydroelectric power station.
Overview:
Overall, it is quite apparent that, the production of electricity by the hydroelectricity power station consists of several steps. The process starts with the storage of water in a high- level reservoir and ends with the production of energy which is sent to the national grid.
Body Paragraph 1:
Moving to the details, the process starts with the storage of water from the river in a high-level reservoir which is called dam. The dam has a tunnel like opening at it base for water to flow through it. The intake of water from the opening is open during the day time and is close during the night. Furthermore, the water flows through the opening into a tube like structure, through which the water flows during day to generate electricity. And during night the water is pumped back to high-level reservoir.
Body Paragraph 2:
Furthermore, when the water through the tube flows down the water strikes with the blades of turbine. And the turbine rotates with the help of water currents. The water flows in the low-level reservoir during the day time. Moving further, the electricity is produced by the generator placed above the turbine. Furthermore, the generator is operated by rotation of turbine. The electricity is then sent to the national grid for future use. At night, the turbine is converted the water is pump and sent back from low-level reservoir to the high-level and reservoir through a pump.
Band 6.5 Sample: The diagram below shows how electricity is generated in a hydroelectric power station.