Band 4.0 IELTS Writing Task 1 Model Answer

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

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 above image show the information of Geothermal power plant on the left side of image show the cold water which is deep inside the land around 4.5 km , beside its there is a cold water pumped down , also a generator powered by turbine and produces electricity and turbine which is powered by steam , beside it there is a hot water pumped up and the last thing show is condenser which is the right side of image and also the end of image . In summary we can see that how geothermal power plant play an significant role which id used to produce electricity. In geothermal power plant we can see that how cold water was down but after in between the generator and turbine the hot water pumped up by in the form of condenser which play an important role to generate the energy for electricity.

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response attempts to describe the process but fails to provide a clear, logical summary of the stages. The description is fragmented and lacks a coherent overview of the cycle. Key features, such as the injection of cold water, the heating process, and the conversion of steam to electricity, are mentioned but not explained in a way that shows a clear understanding of the process. The response lacks a formal structure, such as an introduction or a clear step-by-step progression, which is essential for Task 1. The information is presented in a disjointed manner, making it difficult for the reader to follow the sequence of the geothermal energy production.

Coherence and Cohesion — Band 4.0

The response lacks paragraphing, which is a fundamental requirement for a clear report. The sentences are linked by repetitive and basic conjunctions like 'and' or 'also', and the flow is hindered by the lack of cohesive devices. There is no logical progression of ideas; the text jumps between different parts of the diagram without establishing a clear relationship between them. The use of referencing is weak, with phrases like 'the above image' and 'the last thing' being too informal and imprecise for an academic report. The overall structure is disorganized, which significantly impacts the readability of the response.

Lexical Resource — Band 4.0

The vocabulary is very limited and repetitive. The student relies on basic terms such as 'image', 'thing', 'side', and 'show'. There is little attempt to use precise technical vocabulary related to the diagram, such as 'geothermal reservoir', 'injection well', 'production well', or 'thermal energy'. The phrasing is often awkward, such as 'the last thing show is condenser', which indicates a lack of control over academic register. The vocabulary used is insufficient to convey the technical nature of the process clearly, and there are frequent errors in word choice that impede the clarity of the description.

Grammatical Range and Accuracy — Band 4.0

The response contains frequent grammatical errors that often obscure the meaning. There are significant issues with sentence structure, such as run-on sentences and missing subjects or verbs (e.g., 'the above image show the information', 'which id used'). Punctuation is also problematic, with spaces before commas and a lack of full stops to separate distinct ideas. The range of structures is very limited, consisting mostly of simple, poorly constructed clauses. The frequent errors in basic grammar, such as subject-verb agreement and tense usage, make the text difficult to follow and indicate a lack of control over basic sentence construction.

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