The diagrams below show the design for a wave-energy machine and its location. Summaries the information by selecting and reporting the main features and make comparisons where relevant. You should write at least 150 words.

The two diagrams show the inner workings of a wave-energy

machine

and how it is affected by location. The first diagram shows how the

machine

works. It is placed against the direction of the wave, having an opening at the bottom which takes in

water

-

this

part is the

water

chamber There is

also

a vent which allows

air

to flow in from the top. As the

water

level rises, an upward flow of

air

is created, which allows the

air

to circulate throughout the

machine

when combined

the

Change preposition

with the

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downward

air

.

This

spins the turbines in the compartment above the

water

chamber, which activates the electricity generator. The second diagram shows the options for placing wave-energy machines. If placed near the shore,

installations

Change the noun form

installation

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costs are reduced at the expense of performance - waves are weaker the closer they are to land. Moving out

further

to sea will boost output as waves are larger, but installing the

machine

will come at high expenses.