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. You should write at least 150 words.

The first diagram outlines the design of a wave-energy machine and the mechanism

that is

involved in the conversion of

the

Correct article usage

apply

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tidal energy into

electricity

.

Whereas

, the

second

diagram shows the factors that are important in siting/locating these

machines

.

Overall

, wave-energy

machines

are energy-efficient and operate in a simple manner to produce

electricity

. The location of these

machines

, whether placed in shallow or deep waters have its own advantages and disadvantages. A wave-energy machine consists of two chambers, a

turbine

and a generator. The inward movement of water waves in the lower chamber rises the water level and forces the air to displace into the upper chamber under pressure.

This

pressurised upward air current powers the

turbine

to rotate. The vacuum

thus

formed

as a result

, in-draws more air through the duct on the left top corner and

further

adds power to the rotating

turbine

.

Lastly

, the generator converts the kinetic energy of the

turbine

into

electricity

. The

second

diagram shows that the location of these

machines

is of paramount importance. If located near the coastline, in shallow waters, it involves

less

Change the quantifier

fewer

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costs, but the output is low

due to

the small tidal currents. In comparison, the offshore locations with higher tides produce more

electricity

, albeit at

a higher construction costs

Correct the article-noun agreement

higher construction costs

a higher construction cost

show examples

.