Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-09

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 illustration shows how electricity is produced using geothermal energy

Overall, process involves 7 stages and is linear. It begins with cold water been pushed down to well and ends with generated steam in condenser is released to turbine which result in electricity.

It starts with cold water which is stored above injection well with distance of 4.5km is then flushed down towards the injection well. When the cold water from injection well reaches geothermal zone where natural hot rocks are located, These hot rocks turn the cold water into the hot water.

After that, hot water is stored in production well, which get pumped up to condenser, where hot water get transform into steam. Subsequently, steam travel to generator turbine via narrow tunnel which connect condenser and generator turbine. This high pressure steam hit the shaft which is connected to turbine. The pressure from steam force the shaft to rotate and thus produce electricity which then send to out via electicity tower

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main sequence from cold-water injection through heating, pumping, steam production and electricity generation, and you include the 4.5 km depth. The overview identifies a beginning and an end, showing a sound grasp of the process. However, it misstates the final stages: steam is released from the condenser and powers the turbine, while the turbine drives the generator; the response instead says steam is released “to turbine” and later describes a shaft and high-pressure action not shown in the diagram. The overview also calls the process linear without clearly summarising its key transformation. To strengthen the account, report the diagram’s stages accurately and keep explanations limited to visible information.

Coherence and Cohesion: Band 6.5

The response has a generally clear sequence, supported by paragraphing and markers such as “It starts,” “After that” and “Subsequently.” This makes the movement from underground heating to surface equipment easy to follow overall. The overview, however, gives an inaccurate and confusing account of the ending, and the final paragraph blurs the roles of the condenser, turbine and generator. Some links are also mechanical, with several stages introduced in the same way. Use a clearer overview followed by a step-by-step description, and make each sentence’s subject explicit—for example, distinguish what the steam powers from what the turbine drives. This would make progression more precise and cohesion less dependent on sequencing words.

Lexical Resource: Band 6.0

You use a reasonable range of process vocabulary, including “injection well,” “geothermal zone,” “production well,” “condenser” and “turbine,” which helps convey the diagram’s subject. There are also attempts at more specific wording, such as “flushed down” and “shaft,” although the latter adds an unsupported detail. Some word choices and collocations are inaccurate or awkward: “hot water get transform into steam,” “steam travel,” and “send to out” reduce naturalness. Spelling errors such as “electicity” are also noticeable. Aim for precise, conventional process language and check spelling; this would improve control while retaining the useful technical vocabulary already present.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentences, including clauses beginning “When” and “which,” and the overall meaning is usually recoverable. However, some errors in verb forms, agreement, articles and sentence construction remain. Examples include “cold water been pushed,” “hot water get pumped up,” and “steam travel”; these need forms such as “is pushed,” “is pumped,” and “travels.” The sentence beginning “Overall, process involves” also needs an article, while “These hot rocks” is incorrectly capitalised after a comma. Several long sentences combine stages without secure grammatical control. Practise accurate passive forms for process descriptions and punctuate sentence boundaries carefully; this will make your varied structures more reliable.

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