Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · Cambridge IELTS 12 · 2026-08-25

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 4.0)

the daigram illustrates how geothermal energy use for electricity production . overall, first the cold water pumped out 4.5 kilometer into the groud mean in the injection well after that, when water move into another so it covert into the hot water into the production well . in this hot water start their work without any stop . when water boils fully the water convert into steam and this steam start their process and this steam moves into the turbine and due to the steam of water then it produce energy and this energy move into the genrators after that when the the energy fully move into genrator so this genrators put onto the electricity polls and in this way geothermal plant work and produce electricity . so we learn about the geothermal electricity how electricity produce and the whole process this daigram show after that we learn about the electricity production.

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response attempts to describe the geothermal energy process but fails to provide a clear, professional summary. While the main stages are mentioned, the description is repetitive and lacks the analytical tone required for an Academic Task 1 report. The student focuses on narrating the process in a conversational way rather than reporting the key features of the diagram. Furthermore, the response lacks a clear overview or summary of the process, which is essential for a higher band score. The information is presented in a single, dense paragraph, making it difficult to follow the logical flow of the energy production cycle.

Coherence and Cohesion — Band 4.0

The response lacks paragraphing, which is a significant issue for Task 1. The text is a single block of writing, and the progression of ideas is disjointed. While some cohesive devices like 'after that' and 'when' are used, they are repetitive and mechanical. The lack of clear sentence boundaries and the absence of logical transitions between the stages of the process make the text difficult to navigate. The concluding sentences are redundant and do not add value to the summary, further hindering the overall coherence of the response.

Lexical Resource — Band 4.0

The vocabulary is very limited and repetitive. The student relies on basic verbs like 'move', 'produce', and 'convert' throughout the text. There is a lack of technical terminology appropriate for describing a mechanical process, such as 'geothermal reservoir', 'thermal energy', or 'condenser'. Spelling errors, such as 'daigram', 'groud', and 'genrators', are frequent and detract from the professional quality of the report. The range of vocabulary is insufficient to convey the information with the necessary precision for an Academic Task 1 response.

Grammatical Range and Accuracy — Band 4.0

The grammar is weak, with frequent errors that often impede communication. There are significant issues with subject-verb agreement, such as 'this genrators put onto', and incorrect sentence structures, such as 'the daigram illustrates how geothermal energy use for electricity production'. Punctuation is also problematic, with many run-on sentences and missing articles. The student uses only simple sentence structures, and attempts at more complex explanations result in grammatical confusion. The frequency of these errors is high, making the text difficult to read and understand.

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

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