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.

The diagrams
illustrates
Suggestion
illustrate
the structure of a
system
which produces electricity from waves and the locations it can be set up. As can be seen from the
first
diagram, the wave-energy machine is constituted of two main chambers linked with each other via two air passages. The
turbine
is placed in the upper
chamber
while the lower
chamber
is partly submerged in the sea
wate
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
water
. As regards its operation,
first
, the sea wave enters the lower
chamber
and raises the water level there to push the air up to rotate the
turbine
before finding its way out at the top of the
system
. After that the sea wave withdraws from the lower
chamber
, which creates a drop in pressure to suck the air back in from the opening in the top
chamber
to revolve the
turbine
and come down to the lower compartment of the
system
. The cycle is
then
repeated and creates
continuous force
Suggestion
a continuous force
on the wings of the
turbine
to make it rotate and generate electricity. As is shown in the
second
diagram, the energy generating
system
can be established close to the shore with smaller waves and lower installation cost accompanied by more modest electricity output.
Howerver
Suggestion
However
, when it is erected far offshore where the waves are more powerful, the cost of construction is higher and proportional to the electric yield. Overall, the diagram presents the working mechanism of a power generating
system
operating by waves and its possible locations which reveals the positive correlation between the energy output and the installation cost.

Fully explain your ideas

To get an excellent score in the IELTS Task 2 writing section, one of the easiest and most effective tips is structuring your writing in the most solid format. A great argument essay structure may be divided to four paragraphs, in which comprises of four sentences (excluding the conclusion paragraph, which comprises of three sentences).

For we to consider an essay structure a great one, it should be looking like this:

  • Paragraph 1 - Introduction
    • Sentence 1 - Background statement
    • Sentence 2 - Detailed background statement
    • Sentence 3 - Thesis
    • Sentence 4 - Outline sentence
  • Paragraph 2 - First supporting paragraph
    • Sentence 1 - Topic sentence
    • Sentence 2 - Example
    • Sentence 3 - Discussion
    • Sentence 4 - Conclusion
  • Paragraph 3 - Second supporting paragraph
    • Sentence 1 - Topic sentence
    • Sentence 2 - Example
    • Sentence 3 - Discussion
    • Sentence 4 - Conclusion
  • Paragraph 4 - Conclusion
    • Sentence 1 - Summary
    • Sentence 2 - Restatement of thesis
    • Sentence 3 - Prediction or recommendation

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