Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-09-17

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 process chart demonstrates information about the simple procedure by which electricity is produced.

Overall,it is apparent that there are five stages in this picture, commencing with cold water, and culminating in generating electricity. The process involves pumping water underground, heating it with hot rocks, and using the resulting steam to operate a turbine and generator.

The first stage is when cold water is transported to the injection well from water tank by travelling 4.5 kilometer deeper from the surface. The step after this, it is passed through Geothermal zone(hot rocks). At the same time, water is heated by Geothermal zone. Once cold water turn to hot water, it is transfer to the production well. Than water is transferred to condenser, it cools upcoming steam from turbine . Meanwhile, when steam entre in turbine, it rotate the turbine blade. Turbine is connected with the generator, due to rotation generator produce electtricity by Gauss law. After this process is complete, electricity is transfer to power transmission tower.

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The student successfully addresses all parts of the task by outlining the main stages of the geothermal energy production process, from cold water being pumped 4.5 kilometres underground to the generation of electricity. An overview is provided in the second paragraph, which clearly summarises the main steps involved. Key features such as the depth of the injection well (4.5 kilometres), the geothermal zone, the condenser, the turbine, and the generator are all correctly reported. The progression of the process is followed logically without significant omissions or misinterpretations of the visual data, fulfilling the requirements for Band 7.

Coherence and Cohesion — Band 6.0

The response is logically organised into an introduction, an overview, and a main body paragraph detailing the process steps. Cohesive devices such as 'Overall, it is apparent', 'The first stage', 'The step after this', and 'After this process is complete' are used to guide the reader through the diagram. However, some cohesive links feel slightly mechanical or are affected by minor referencing errors (e.g., 'Than water is transferred' where 'Then' is intended). Paragraphing is appropriate, and there is a clear overall progression from start to finish, supporting a Band 6.5 or solid 6 score.

Lexical Resource — Band 5.5

The student uses an adequate range of vocabulary suitable for describing a technical process, including terms such as 'procedure', 'transported', 'condenser', 'turbine', and 'generator'. However, there are several word-choice and spelling inaccuracies throughout the text, such as 'kilometer' instead of 'kilometres', 'transfer' instead of 'transferred', 'Than' instead of 'Then', and 'entre' instead of 'enter'. While these errors do not severely impede communication, they limit the score to a Band 6.

Grammatical Range and Accuracy — Band 5.5

The response contains a mix of simple and complex sentence structures, such as relative and participial clauses ('by travelling 4.5 kilometer deeper from the surface', 'using the resulting steam to operate a turbine'). There are, however, several grammatical errors and awkward phrasings, such as missing articles ('from water tank'), incorrect verb forms ('Once cold water turn to hot water'), and punctuation issues. Despite these errors, meaning is generally clear, justifying a Band 6 score.

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

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