Renewable And Non Renewable Resources Questions Medium
Tidal energy is a form of renewable energy that is generated by harnessing the power of ocean tides. It is a result of the gravitational pull of the moon and the sun on the Earth's oceans, causing them to rise and fall.
Tidal energy is harnessed through the use of tidal power plants or tidal turbines. Tidal power plants are constructed near coastlines where there is a significant difference in water levels between high and low tides. These plants consist of barrages or dams that are built across estuaries or bays. During high tide, the gates of the barrage are opened, allowing the water to flow into the reservoir behind it. When the tide recedes, the gates are closed, and the water is trapped in the reservoir. As the tide changes and the water level outside the barrage drops, the water in the reservoir is released through turbines, which are connected to generators. The flowing water turns the turbines, generating electricity.
Tidal turbines, on the other hand, are similar to wind turbines but are specifically designed to operate underwater. They are placed in areas with strong tidal currents, such as straits or channels. As the tidal currents flow, they cause the blades of the turbine to rotate, which in turn drives a generator to produce electricity.
Both tidal power plants and tidal turbines are effective methods of harnessing tidal energy, providing a clean and renewable source of electricity. However, the construction and maintenance of these systems can be expensive, and their implementation is limited to areas with suitable tidal conditions.