Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-28

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 illustrates that how geothermal power is used to generate electricity.

Overall, It is evident that geothermal process follows a circular path where cold water turns into hot and eventually into steam. The steam then helps in turning the turbine to produce electricity.

At first,cold water is added into the geothermal plant,where it passes through the injection wall. The injection wall then pushes the water into hot rocks.In addition to that,there lies a geothermal zone that makes the water warm.Next to the hot rocks, the production well is present, which took the hot water out of it.

On top of that, hot water is recieved by condensor which than turns the water into steam.It does so by concverting liquid in to vapours. Finally, the steam not only turns the turbine but also generates electricity. The generated electricty then distribute into grid station.

AI examiner evaluation

Task Achievement / Task Response: Band 5.5

You identify the main stages, from cold water entering the injection well to heated water returning through the production well, then steam driving the turbine. The overview also captures the broad transformation from cold water to steam and electricity. However, some details are inaccurate or unclear: the water is not added “into the geothermal plant,” and the condenser produces steam rather than simply receiving hot water and “turn[ing]” it without explaining the stage. The turbine drives the generator; it does not itself generate electricity. The 4.5 km depth is omitted, and the final reference to a “grid station” is not supported by the diagram. The response is also seven words below the required minimum, limiting the detail reported.

Coherence and Cohesion: Band 6.5

The response has a clear overall arrangement: an overview followed by the underground process and then the surface equipment. Sequencing phrases such as “At first,” “Next to,” and “Finally” help the reader follow the stages, and the paragraph breaks are appropriate. This coherent progression is a strength. Some linking is mechanical or imprecise, however: “On top of that” does not clearly signal the next stage, while “In addition to that” introduces the geothermal zone as if it were an extra feature rather than part of the water’s route. References such as “it” in “which took the hot water out of it” are also unclear. More precise stage-to-stage links and clearer references would make the progression smoother.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “injection well,” “production well,” “geothermal zone,” “turbine,” and “steam,” which allows the main sequence to be understood. There is also some attempt to vary wording, for example “generate” and “produce.” However, several word choices and collocations are inaccurate or awkward: “injection wall” should be “injection well,” “hot water is recieved by condensor” is not a natural description, and “grid station” does not match the diagram’s transmission pylon and power lines. Spelling errors such as “recieved,” “concverting,” and “electricty” are noticeable. Aim for accurate technical terms and concise process verbs, such as “is pumped,” “is heated,” and “is converted into steam.”

Grammatical Range and Accuracy: Band 5.5

You attempt a mix of simple and complex sentences, including a relative clause in “the production well is present, which took the hot water out of it.” However, errors in sentence construction and verb forms recur. The opening “illustrates that how” should be “illustrates how,” and “the production well … took” should use the present passive, such as “the production well carries the hot water back up.” In “the steam … turns the turbine but also generates electricity,” the parallel structure incorrectly assigns electricity generation to the steam; the generator produces it. There are also article and punctuation problems, including “a condensor” and missing spaces after commas. More consistent present-tense passive forms and carefully checked sentence boundaries would improve accuracy.

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

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.