Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-08-12

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 6.0)

The diagrammatic process illustrates the steps are involving to generate electricity from geothermal energy.

The process begins with cold water, which is the main source of this process. At the next stage of the injection wall, where water is pumped down at the level of 4.5 km underground to the geothermal zone, which often called hot rocks. In this zone cold water converts into hot once.

Subsequently, the production well is the next step, where hot water is pumped up to the condenser. Condenser is used to produce steam. Following this, steam is passed down to the turbine, which creates pressure to power the turbine. Finally, turbine is used to power and produce electricity. Generated electricity is supplied to various power station for the distribution. This process is remained continue.

Overall, the process consists of several stages, beginning with cold water pumped stage and ending with the production of electricity.

AI examiner evaluation

Task Achievement / Task Response — Band 6.0

The response covers the main stages of the geothermal energy production process, from the injection of cold water to the final distribution of electricity. However, the description is somewhat mechanical and lacks a clear overview of the process as a whole. While the key features are identified, the explanation of the 'condenser' and 'turbine' stages is slightly simplistic. To reach a higher band, you should aim to synthesize the information more effectively, perhaps by grouping the stages into logical phases (e.g., the underground extraction phase and the surface generation phase) and providing a more comprehensive summary of the entire cycle in the introduction or overview.

Coherence and Cohesion — Band 6.0

The response is logically sequenced, following the chronological order of the diagram. You use some cohesive devices such as 'The process begins', 'At the next stage', 'Subsequently', and 'Finally' to guide the reader. However, the paragraphing is underdeveloped; the entire body of the report is contained within a single paragraph, which hinders the logical flow. Additionally, some transitions are slightly repetitive or mechanical. Improving the use of paragraphing to separate the distinct phases of the process would significantly enhance the clarity and structure of your writing.

Lexical Resource — Band 6.0

You demonstrate an adequate range of vocabulary for the task, using terms like 'geothermal energy', 'injection well', 'condenser', and 'distribution'. However, there are some inaccuracies in word choice and phrasing, such as 'steps are involving to generate' (should be 'steps involved in generating') and 'hot once' (should be 'hot water'). The vocabulary is functional but lacks the precision and variety required for higher bands. To improve, focus on using more precise collocations and avoiding repetitive phrasing like 'the next step' or 'is used to'.

Grammatical Range and Accuracy — Band 5.5

The response contains a mix of simple and complex sentence structures. However, there are several grammatical errors that occur throughout the text, such as 'injection wall' (likely meant 'well'), 'which often called' (missing 'is'), 'Condenser is used' (missing article 'The'), and 'This process is remained continue' (incorrect verb form). These errors are frequent enough to be noticeable, though they do not generally impede the reader's understanding of the process. Increasing your control over articles and verb tenses will help improve your accuracy.

See this exact question answered at other band scores — the same prompt compared across bands.

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