Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-20

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 gives information about how electricity produced using geothermal energy.

Overall, the production of electricity through geothermal energy is a 5 step complicated linear process which use water as a raw material and ended up into electricity which delivered into grid.

First of all, the cold water is used as raw material which pumped down into the 4.5km depth of the injection well and later the crossed from geothermal zone where hot rocks are placed and make the cold water into hot water. On the east side, there is a production well where hot water stored and later hot water pumped up into a condenser.

Furthermore, the condensor makes the hot water into steam and after that steam pumped with pressure into a turbine which rotates by steam. From this, by the rotation of turbine generator produce electricity because generator is powered by turbine. At the end the electricity is trasnfered into the grid.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages in the correct order, including the 4.5 km injection well, heating in the geothermal zone, the production well, and the conversion of steam into electricity. The overview identifies a five-step linear process and water as the input, giving the reader a useful summary. Some details, however, are unclear or not fully supported by the diagram: the water is not described as being “stored” in the production well, and the diagram does not show steam being pumped “with pressure.” The final transfer to the grid is also not explicit in the transcription, although power lines are shown. To strengthen the response, describe the condenser and the turbine-generator relationship more precisely and avoid adding mechanisms not shown.

Coherence and Cohesion: Band 6.5

The response has a clear overall sequence, moving from an overview to the underground stages and then to steam and electricity production. Paragraphing helps distinguish the overview from the process details, and signposts such as “First of all,” “Furthermore,” and “At the end” make the order easy to follow. This is a coherent arrangement, though some linking is mechanical and the first detailed paragraph contains several stages in one long sentence. The reference “From this” is also vague: it is not immediately clear whether it refers to steam, the turbine, or the preceding process. Use more precise links between stages and separate the water-heating, steam-generation, and electricity-generation steps to make progression smoother.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “injection well,” “production well,” “geothermal zone,” “condenser,” “turbine,” and “generator,” so the subject is generally clear. There are also attempts at more specific language, such as “raw material” and “linear process.” However, several word choices and collocations are inaccurate or awkward: “hot water stored” does not describe the movement shown, “rotates by steam” is unnatural, and “electricity … delivered into grid” is imprecise. Spelling errors in “condensor” and “trasnfered” also reduce control. Aim for accurate process verbs and natural combinations, such as water being heated, steam driving a turbine, and electricity being transmitted.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more extended sentence forms, and the sequence remains understandable. However, errors in verb forms, agreement, articles, and sentence construction are frequent enough to limit accuracy. For example, “which use water” should be “which uses water,” while “cold water … which pumped down” needs a passive form such as “which is pumped down.” In “generator produce electricity,” the subject and verb do not agree, and “electricity … delivered into grid” lacks the required auxiliary and article. Some sentences also join several actions without clear grammatical control. Practise accurate passive constructions for process descriptions and check subject–verb agreement, articles, and complete verb phrases.

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