Band 6.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.5 · Cambridge IELTS 12 · 2026-07-31

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 6.5)

The diagram illustrates the number of steps involved in the production of electricity by geothermal energy, tracing the process from a introduction of cold water into injection well to production of electricity with a help of steam.overall, the procedure follows a circular, multi stage sequence that begins with a pumping of cold water deep into earth and ends with a output of electricity with help of steam powered turbines.During the process, cold water is moved to hot rocks and then coming hot water is condensed to steam which will generate power through turbine.In initial stages, cold water is pumped down to 4.5 km into ground.water is pumped with a help of injection well through hot rocks.In final stages, hot water is pumped up into condenser with a help of production well.Hot water is condensed into steam with in a condenser.It is followed by movement of turbines with help of moving steam which will result in production of electricity by generator.At last step, produced electricity will be transferred to power plants.

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The response successfully identifies the main features of the geothermal energy production process. You have clearly outlined the sequence from the injection of water to the generation of electricity. However, the response lacks a clear paragraph structure, which makes it harder to follow the progression of the process. While you have covered the key stages, the description could be more precise by explicitly mentioning the depth (4.5 km) and the specific components like the 'injection well' and 'production well' more fluidly. To improve, ensure you group related steps into distinct paragraphs to better highlight the logical flow of the diagram.

Coherence and Cohesion — Band 6.0

The response is written as a single block of text, which significantly impacts the coherence. IELTS Academic Task 1 requires clear paragraphing to separate the introduction/overview from the detailed body stages. While you use some cohesive devices like 'In initial stages' and 'In final stages', the lack of paragraph breaks makes the text feel repetitive and mechanical. The progression of ideas is logical, but the overall structure needs to be improved by organizing the information into at least two or three distinct paragraphs to guide the reader through the process more effectively.

Lexical Resource — Band 6.5

You demonstrate an adequate range of vocabulary for the task, using technical terms such as 'geothermal energy', 'injection well', 'condenser', and 'turbines' correctly. However, there is a noticeable lack of variety in your sentence starters and phrasing, with repetitive use of 'with a help of'. To reach a higher band, try to incorporate more sophisticated synonyms and varied collocations. For example, instead of repeating 'pumped', you could use 'injected', 'circulated', or 'transported'. The vocabulary is sufficient to convey the meaning, but it lacks the flexibility and precision required for higher bands.

Grammatical Range and Accuracy — Band 6.0

The response contains a mix of simple and some complex sentence structures. There are several recurring grammatical errors, particularly with articles (e.g., 'a introduction', 'to a output', 'into ground'). Additionally, there are punctuation issues, such as missing spaces after periods and inconsistent capitalization at the start of sentences. While these errors do not completely impede communication, they are frequent enough to lower the score. To improve, focus on the correct use of articles and ensure that every sentence begins with a capital letter and ends with appropriate punctuation.

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