Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-11-09

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 diagram illustrates the whole procedure of how electricity can be generated utilizing the geothermal energy.There are several steps shown in the figure from water storage in a tank to the final step of production of electrical energy.

The process begins when cold water from storage tank will go down towards the injection well, where water in forcefully pumped down to move forward and reached the underground geothermal zone. This step is very crucial for the process because the hot rocks present in this area will eventually turn the cold water into boiled firstly, then the extreme hot temperature of rocks will cause evaporation. The water vapours in steam will be pumped upward through production well. A condenser is installed on the ground to collect the steam followed by the turbine. The steam pressure will run the turbine Finally, the turbine will run the generator and electric current will be produced. Electrical energy will give power supply to the tower and will be used for various purposes such as manufacturing machines in factories will use this electricity and electrical supply for appliances in our homes etc.

AI examiner evaluation

Task Achievement / Task Response: Band 5.5

You identify the process as a whole and describe its main sequence, from cold water entering the injection well to steam driving a turbine and generator. This gives the reader a relevant account of the central stages. However, the overview is not sufficiently clear or accurate: the response does not highlight the key transformation of water as it passes through the hot-rock zone, and it says the condenser “collect[s] the steam,” whereas the diagram shows it releasing steam. The explanation that the rocks turn water into “boiled firstly” and then cause evaporation is also unclear. The final claims about powering a tower, factories and home appliances are not shown in the diagram. Focus on the depicted stages and give a concise, accurate overview of how underground heating leads to electricity generation.

Coherence and Cohesion: Band 6.5

The response follows a generally logical, chronological order, using “The process begins,” “This step,” and “Finally” to guide the reader through the system. The opening also establishes the topic before the stage-by-stage account. This coherent overall arrangement is a strength. However, the writing is presented as one long paragraph, and some links between stages are unclear: “A condenser is installed on the ground to collect the steam followed by the turbine” makes the relationship between the condenser, steam and turbine difficult to follow. The final sentences move from the generator to a tower and then to examples of electricity use, which interrupts the process description. Use clear paragraphing and connect each stage directly to the next, avoiding extra information outside the diagram.

Lexical Resource: Band 6.0

You use a reasonable range of topic-related vocabulary, including “geothermal zone,” “injection well,” “production well,” “condenser,” “turbine” and “generator.” These terms help communicate the process, and phrases such as “electrical energy” show some variation. However, several choices are inaccurate or unnatural for this diagram: “water in forcefully pumped,” “turn the cold water into boiled,” and “the steam pressure will run the turbine” do not express the stages precisely. “Power supply to the tower” is also not a clear description of the diagram’s electricity output. Aim for precise process collocations, such as water being pumped down, heated by hot rocks, converted into steam, and used to drive a turbine.

Grammatical Range and Accuracy: Band 5.5

There are attempts at complex sentences, for example the explanation beginning “because the hot rocks present in this area,” and the sequence is mostly understandable. However, some grammatical errors make parts of the process difficult to interpret. These include “water in forcefully pumped” (missing the correct verb form), “will go down” and “will be produced” where present simple is more suitable for a general process, and “turn the cold water into boiled,” which has an incorrect construction. The sentence “The steam pressure will run the turbine Finally” also needs punctuation to separate the stages. Improve control of passive forms and present-tense process descriptions, and check sentence boundaries, articles and verb forms when editing.

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