The diagrams show a structure that is used to generate electricity from wave power.
Sample Response
The diagrams show the structure and processprocesses of generating electricity from wave powerthe wave power. As the diagrams showAs is observed from the presented illustration, waves are used to generate electricitythe wave is used to produce the electricity and both incoming and receding waves driveboth the tide and ebb the structure is used to rotate a turbine to produce the electricity. According to the diagramsgiven pictorial, the electricity-generating structureelectricity producing machine works in two ways. During the incoming-wave phaseFirstly, the structure is placed by the seanear a sea so that the incoming wavewave water gets inside the chamber and creates air pressurean air pressure that rotateswould rotate the turbine placed inside a column. The rotation of the turbine produces electricity which is stored in the cells and this electricity can be passed and used. The whole structure is placed near the sea, adjacent to a cliff or sea wall. The second illustration depicts how the electricity can be produced using a receding wavethe ebb tide of the sea. During the ebb, the water flows out of the chambergets off from the chamber and the air pressure is created again from the opposite direction and this rotates the turbine. The rotation of the turbine produces electricity and supplies it to the storage. In summary, the electricity can be produced using a structure near the sea and both the tide and the ebb-tide is used to rotate the turbine to produce the electricity.
Why this response received Band 6.0
The response explains the two airflow phases in a generally understandable sequence and identifies the chamber, column, and turbine. Its main limitation is visual accuracy: it invents electricity storage, treats the process as tide-driven, and omits that the turbine turns in the same direction as airflow reverses. The highest priority is to describe only the labelled mechanism and make that shared turbine movement the central overview.
IELTS Writing Criteria Scores
Task Achievement
The two phases and principal components are described, but the same-direction turbine movement is omitted and unsupported electricity storage is added.
State that incoming and receding waves reverse the airflow while the turbine continues to turn in the same direction, and remove storage claims.
Coherence and Cohesion
The account moves from incoming water to receding water in a broadly logical sequence, but repetition and the absence of paragraphing reduce clarity.
Use an overview followed by one paragraph for each airflow phase, avoiding repeated statements about producing electricity.
Lexical Resource
Relevant process terms such as chamber, column, air pressure, and turbine are used, but several expressions are repetitive or inaccurate.
Replace phrases such as given pictorial, wave water, gets off, and supplies it to the storage with precise process vocabulary.
Grammatical Range and Accuracy
The response attempts varied clause structures and passive forms, but recurring article, agreement, and sentence-construction errors reduce control.
Prioritise complete clause structure and agreement, especially with both phases are used and water leaves the chamber.
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IELTS Academic Writing Task 1
The diagrams 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.