The diagrams below show a structure that is used to generate electricity from wave power.
Sample Response
The diagrams illustrate how electricity is generatedelectricity generates usingwith the help of wave power.
Overall, waves playwave plays anthe important role and the turbine rotatesand turbine moves, generating electricity, and the whole structure is built into a cliff or sea wallconnected with cliff or sea wall.
As can be seen from the first picture, the chamber plays a significant part in the whole process in which waves enter and leaveWave come and go. When the wave enters the chambercomes I the chamber, the incoming waveflow of the wave creates air pressure. Then, a turbine in the column rotatesmove roundly and then air goesgo out from the open topthen wide-open head of the column. When the turbine moves, it generates electricity. The structureThe whole structure of this process is built on a cliff or sea wall.
With regard to the secondnext diagram, Air enters through the top of the column and again drives the turbinecomes from the upper side of the column, which again circulate the turbine in the same direction. Air moves downwardsin the down direction. After that, by this motion turbine which also creates electricity. Eventually, the wave recedes into the seagoes back to sea.
Why this response received Band 6.0
The response successfully follows the two operating phases and identifies the chamber, airflow, turbine, and electricity generation, so the essential process is covered. Its main limitation is frequent grammatical and lexical awkwardness, which makes several stages less precise than the diagram. The highest priority is to explain the rising and retreating wave phases in clear cause-and-effect sentences, emphasising that opposite airflow keeps the turbine turning in the same direction.
IELTS Writing Criteria Scores
Task Achievement
The main components and both airflow phases are described accurately, although the overview and causal explanation lack full precision.
Give a clearer overview that the incoming and retreating waves create opposite airflow while the turbine continues rotating in one direction.
Coherence and Cohesion
The response follows the diagram from the incoming wave to the returning wave, but some linking is mechanical and local progression becomes unclear.
Use one paragraph for each phase and connect every stage explicitly with cause-and-effect links such as as a result and this draws air downward.
Lexical Resource
Relevant process vocabulary is present, but awkward collocations and imprecise expressions occur frequently.
Use precise combinations such as enters the chamber, forces air upward, rotates the turbine, and is drawn back toward the sea.
Grammatical Range and Accuracy
Complex structures are attempted, but frequent agreement, article, word-form, and sentence-formation errors reduce control and clarity.
Build each stage with a complete subject-verb clause and systematically check singular agreement, articles, and passive forms.
Write this task while it is fresh
Try the same task now. It helps you remember the feedback and write better next time.
IELTS Academic Writing Task 1
The diagrams below show a structure that is used to generate electricity from wave power.
Your response
Write the task yourself, then compare your choices with the annotated response.