Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-16

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 given presentation is a process diagram which illustrates the production of electricity using geothermal energy.

In an overview, everything sstarts with the usage of cold wated which got heated by the hot rocks beneath ground and then the steam of that hot water is used to run turbine and generate power.

At first, cold water from the reservior or storage units is pumped down to approx 4.5 km to the injection well. Further, the injection well inject the water in the designated geothermal zones where there are natural hot rocks. When the water is passed through the extreme heat between , it reaches the production well.

Similarly like the cold water at the beginning, boiled aqua again pumped on the ground level directly towards condenser. Furthermore, a turbine is powered by the pressurised steam coming from the condensor. In the last step, the turbine is connected to generator which converts mechanical energy to electrical energy. Thus, clean electricity could reaches to public from many geothermal powerplants.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the main process accurately: cold water is sent underground, heated by hot rocks, returned to the surface, and used to produce electricity through steam, a turbine and a generator. The overview captures this overall sequence, and the 4.5 km depth is correctly reported. However, some details are less fully or precisely described. For example, the water is said to reach the production well after passing through the hot-rock zone, but the role of the condenser in producing steam is not clearly explained; the response instead says the water is pumped “directly towards condenser.” The final claim that electricity reaches the public is not shown in the diagram. A more complete account of the condenser and the flow from steam to turbine would make the description more fully grounded in the visual.

Coherence and Cohesion: Band 6.0

The response has a clear overall arrangement, with an introduction, an overview and a chronological description of the stages. Sequencing expressions such as “At first,” “Further,” and “In the last step” help the reader follow the process. However, some links are mechanical or do not express the relationship accurately: “Similarly like the cold water at the beginning” is awkward, while “Furthermore” does not clearly show how the condenser stage leads to the turbine. The paragraphing is serviceable, but the second and third paragraphs could connect the underground heating stage more smoothly to the surface equipment. Use a consistent sequence of stages and clearer references to each component to improve progression and cohesion.

Lexical Resource: Band 6.0

You use an adequate range of process vocabulary, including “geothermal zones,” “injection well,” “production well,” “pressurised steam,” and “mechanical energy.” These terms help convey the subject, and the meaning is generally clear. There are, however, several inaccurate or unnatural choices and spelling slips, such as “reservior,” “condensor,” “boiled aqua,” and “extreme heat between.” “Aqua” is not a natural technical term here, and “boiled” overstates what the diagram shows. The phrase “clean electricity could reaches to public” is also an awkward collocation. Prefer standard, precise process language—for example, “storage tank,” “heated water,” and “the water passes through the hot-rock zone”—and check spelling carefully.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and complex sentence forms, including a relative clause in “where there are natural hot rocks” and a sequence linked by “which.” The process remains understandable, but some grammatical errors occur across the response. Examples include subject–verb agreement in “the injection well inject,” the missing auxiliary in “boiled aqua again pumped,” and the incorrect verb form in “electricity could reaches.” There are also problems with articles and sentence construction, as in “powered by the pressurised steam coming from the condensor,” where the intended stages could be expressed more clearly in a complete sentence. Review agreement, auxiliary verbs and modal patterns (“could reach”), and aim for accurate, complete clauses while retaining some complex structures.

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