Question

The gravitational pull of the moon causes the sea water to rise periodically-
(a) What name is given to the condition of the sea when its water is raised?
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagrams to show how this energy can be harnessed to generate electricity.

Answer 1

Hint
The gravitational pull of the moon causes the sea water to raise and fall, this is the main reason for the rise and fall of the sea water. So, all of us think that the air around the sea will make the waves, it is also a reason but the main reason for the sea waves is the gravitational pull of the moon.

Complete step by step answer
What name is given to the condition of the sea when its water is raised-
High tide or the high waves are the name which is given to the condition of the sea when its water is raised. This condition is due to the more gravitational pull of the moon. And usually this condition will happen during the night time.
What name is given to the condition of the sea when its raised water recedes-
Low tide or low waves are the name which is given to the condition of the sea when its raised water recedes. This condition is due to the less gravitational pull of the moon. And usually this condition will happen during the day time.
What name is given to the energy which can be harnessed from this natural phenomenon-
Tidal energy is the name given to the energy which can be harnessed from this natural phenomenon. And the tidal energy is used to generate the electricity, by using the turbines, when the waves hit the turbine, the turbine will revolve. So, the electricity is generated.

Note
The water is allowed to move towards the wings of the turbine, so the turbine will rotate. The rotation of the turbine will generate the electricity, and this electricity is stepped up by the transformer and distributed to the several areas.