The diagrams below show a structure that is used to generate electricity from wave power.
The diagrams graphically demonstrate how electrical energy is produced in two steps by taking advantage of the wave power.
Turning to the diagram A, on the ocean floor a chamber is constructed, and the chamber is situated beside the cliff or the sea wall. Whenever the wave advances, the chamber guides the wave towards a vertical column in which a turbine is located. Thence, the movement of the water flow increases the pressure of the air at the bottom of the column. In turn, an air flow takes shape inside the column, and this flow rotates the turbine on counterclockwise. Afterwards, the axial rotation of the turbine produces electricity.
Looking at the diagram B, the energy reduction of the wave brings about retreating the water flow and the wave returns back into the inlet of the chamber. This phenomenon lessens the air pressure at the bottom of the column. Therefore, the air inside the column is sucked out and then a new air flow, which revolves the turbine on anticlockwise, commences to move down. As a result the electricity is generated.
- Some people think that parents should teach children how to be good members of society. Others, however, believe that school is the place to learn this.Discuss both these views and give your own opinion. 45
- You successfully passed a job interview You are expected to start on November 15 but you will not be available on that date Write a letter to your boss Explaining your situation Expressing your concern Suggesting a solution 78
- Using animals to test the safety of cosmetics or drugs used for medical reasons is never acceptable To what extent do you agree with this statement 80
- Success in formal pen and paper examinations is often seen to be a sign of intelligence To what extent do you agree with the view that formal examinations measure intelligence How can students be assessed 84
- To some people studying the past has little value in the modern world Why do you think it is important to do so What will be the effect if children are not taught history Give reasons for your answer and include any relevant examples from your own knowled 61
the wave returns back into the inlet of the chamber.
the wave returns the inlet of the chamber.
Read a sample and see how to use verbs:
http://www.testbig.com/ielts-writing-task-i-essays/diagrams-show-struct…
Attribute Value Ideal
Score: 6.5 out of 9
Category: Good Excellent
No. of Grammatical Errors: 1 2
No. of Spelling Errors: 0 2
No. of Sentences: 10 10
No. of Words: 181 200
No. of Characters: 856 1000
No. of Different Words: 94 100
Fourth Root of Number of Words: 3.668 4.0
Average Word Length: 4.729 4.6
Word Length SD: 2.706 2.4
No. of Words greater than 5 chars: 64 60
No. of Words greater than 6 chars: 46 50
No. of Words greater than 7 chars: 29 40
No. of Words greater than 8 chars: 17 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18.1 21.0
Sentence Length SD: 6.625 7.5
Use of Discourse Markers (%): 0.2 0.12
Sentence-Text Coherence: 0.424 0.35
Sentence-Para Coherence: 0.559 0.50
Sentence-Sentence Coherence: 0.096 0.07
Number of Paragraphs: 3 4