The diagrams below show the design for a wave-energy machine and its location. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

There are

two

diagrams, one of which illustrates the structure and working of a

wave-energy

machine

,

while

the other describes the choices of locating the

machine

at

two

different depths of a

water

body.

Overall

, a

wave-energy

machine

manipulates the

water

flow to rotate the turbines and generate electricity. The

machine

, if located at an area of greater depth below sea level, produces a high output of energy but requires high installation costs. The

machine

has

two

chambers. The lower

chamber

is introduced to

water

waves which cause an upward airflow into the upper

chamber

. The air escapes the

chamber

, re-enters, and flows downwards into the lower

chamber

.

This

circulation of airflow rotates the turbines which in turn, generates

wave-energy

Correct your spelling

wave energy

show examples

. The

wave-energy

machines have

two

possible locations in a

water

body that vary based on the depth of

water

. Machines that are placed near the shore require lower installation costs as the waves are smaller and result in a lower output of wave energy as compared to the ones that are situated

further

into the

water

body where the waves are larger and produce a higher amount of energy.