Question

What is tidal energy? How is tidal energy harnessed for producing electricity?

Answer 1

Tidal energy

1. Tidal energy is the energy created by the rise and fall (Tide) of the water in the ocean.
2. The gravitational force between the moon and earth results in tides in the ocean.

Electricity production from tidal energy

1. A tidal energy power plant has a dam where a turbine is installed.
2. The water flows from the ocean to the reservoir during the high tide.
3. Water before reaching the reservoir passes through the turbine's blade.
4. The turbine's blade starts rotating due to the kinetic energy of the water flow.
5. The rotation of the turbine's blade rotates the shaft, which is connected by the generator to produce electricity.
6. The water flows from the reservoir to the ocean during the low tide which rotates the turbine's blade and produces electricity.