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 diagram to show how this energy can be harnessed to generate electricity.