Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-07

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 diagram demonstrates the process involving five steps, which are used for generating electricity through geothermal energy. Overall, the process begins with pumping down cold water into underground facilities and ends with generating electricity with the help of turbines powered by steam.

First of all, the cold water, which is stored in the container is pumped down to the injection well through narrow passage of 4.5 kilometer. Subsequently, the water is passed through geothermal zone which consits of hot rocks, taking cold water to extermities. Consequently, the water becomes hot and it is pushed upwards through narrow passage with similar length of 4.5 km to condenser by the production well. The generated steam from the hot water, rotates the turbine very quickly, which is connected to the generator, resulting the production of the electricity. The generator is connected to the tower for the distribution of electricity. Thus, electricity is generated through geothermal power plant.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main sequence from pumping cold water underground to producing electricity, and your overview correctly identifies the process’s beginning and end. You also include the 4.5-kilometre depth and explain that hot rocks heat the water before it rises. However, some stages are less fully or precisely described: the condenser’s role in producing steam is not clearly stated, and the account moves directly from hot water reaching the condenser to steam rotating the turbine. The description of water travelling to the “extremities” is unclear and not supported by the diagram. For a fuller account, explain that water passes through the geothermal zone, returns to the surface via the production well, and is converted to steam in the condenser before powering the turbine.

Coherence and Cohesion: Band 6.5

The response has a clear overall arrangement: an introduction and overview are followed by a chronological account, with “First of all,” “Subsequently,” and “Consequently” helping the reader follow the stages. The final sentence also provides a sense of closure. This coherent progression is a strength. However, some linking is mechanical, and “Thus” repeats the conclusion that electricity has already been generated. The sentence beginning “The generated steam…” compresses several stages, making the relationship between the condenser, steam, turbine, and generator less clear. Improve cohesion by giving each major stage its own clear clause and using precise references, such as “the heated water” and “this steam,” so the sequence remains easy to track.

Lexical Resource: Band 6.0

You use an adequate range of process vocabulary, including “injection well,” “geothermal zone,” “production well,” “condenser,” and “turbine.” These terms make the subject clear, and phrases such as “pumped down” and “pushed upwards” convey movement. There are, however, some inaccurate or awkward choices that reduce precision: “narrow passage” is less suitable than “well,” “taking cold water to extermities” does not clearly describe the flow, and “rotates the turbine very quickly” adds an unsupported detail. Spelling errors such as “consits” and “extermities” also affect accuracy. Aim for standard process collocations, for example, water “flows through” the hot-rock zone and “is converted into steam.”

Grammatical Range and Accuracy: Band 6.0

You use a mix of simple and complex forms, including a relative clause in “the cold water, which is stored in the container,” and participle clauses such as “resulting the production of the electricity.” The stages are generally understandable, but some grammatical errors remain. For example, “through narrow passage” needs an article, and “resulting the production” requires a different construction, such as “resulting in electricity production.” The sentence “The generated steam from the hot water, rotates…” has an unnecessary comma separating the subject from its verb. There is also some awkward control of clause relationships in the long description of the water’s movement. Use a wider range of sentence patterns while checking articles, prepositions, and punctuation around clauses.

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