Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-08-06
IELTS Writing Task 1 question
The diagram below shows how geothermal energy is used to produce electricity.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Student answer (Band 5.0)
Task-1 Diagram
The diagram illustrates how electricity produce used to geothermal energy.
Overall, it can be noted that geothermal power plant produce energy throughout the cold water, hot water, injection well and turbine to produces electricity.
Firstly, cold water pumped dowen 4.5 km to the injection well, then throughout the geothermal zone the cold water heating in the production well. After that, hot water pumped up 4.5 km and hot water store in condenser, which makes steam drop for the turbine.
Following that, turbine machine observe steam to produce electricity. Lastly, powered by turbine and produce electricity throughout the generator the electricity supply to tower and reach in cities, villages and companies.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The response fails to meet the minimum word count requirement of 150 words, reaching only 112 words. This significantly impacts the ability to fully develop the description of the process. While the student identifies the main stages of the geothermal energy production cycle, the explanation is superficial and lacks the necessary detail to provide a comprehensive summary. Key features, such as the specific role of the condenser or the distinction between the production and injection wells, are described in a fragmented manner. To improve, the student must expand on the process steps and ensure all parts of the diagram are clearly explained to meet the length requirement.
Coherence and Cohesion — Band 5.0
The response uses basic cohesive devices such as 'Firstly', 'After that', and 'Following that' to sequence the information. However, the paragraphing is ineffective; the text is broken into very short, choppy segments that hinder the flow of the report. The logical progression is present but mechanical, and the lack of sufficient content makes the overall structure feel underdeveloped. To improve, the student should group related steps into more substantial paragraphs and use a wider variety of linking words to connect ideas more fluidly.
Lexical Resource — Band 5.0
The vocabulary is limited and often repetitive, relying heavily on basic terms like 'produce', 'hot water', and 'cold water'. There are several instances of awkward word choice and incorrect collocations, such as 'turbine machine observe steam' (instead of 'utilizes' or 'harnesses') and 'reach in cities' (instead of 'reach cities'). The range of vocabulary is insufficient to describe a technical process with precision. The student needs to incorporate more subject-specific terminology related to energy production, such as 'geothermal reservoir', 'thermal energy', and 'electricity distribution'.
Grammatical Range and Accuracy — Band 5.0
The response contains frequent grammatical errors that impede clarity. There are issues with verb forms ('electricity produce used', 'cold water heating'), missing articles, and incorrect prepositions ('throughout the cold water'). Sentence structures are mostly simple, and there is a lack of complex sentence construction. The frequent errors in tense and word order make the text difficult to follow at times. To improve, the student should focus on basic sentence construction, subject-verb agreement, and the correct use of passive voice, which is essential for describing technical processes.
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