Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · Cambridge IELTS 12 · 2026-08-28

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)

Firstly the cold water is drawn to the pumped water in downward . Distance covered from initially point to a cold water pumped is 4.5 km, after completing a process water was down into the pumped by covered all process the water was pass and come into injection well . Than water was go to the geothermal zon which is also know as hot rocks. Due to geothermal here water was heat up and than send you the production well. This hot water move upward to the hot pumped. From hot pumped water was sending to the condenser . Condenser was the place where water was boiled after passing the steam process , go to the turbain where ia already electricity process than water send to tha generator this generator was provided the electricity to the power tanker . Passing this processing the electricity was generated

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the score. While the student attempts to describe the geothermal process, the summary is fragmented and lacks a clear overview or logical grouping of the stages. Key features, such as the cycle of water and the conversion of energy, are described in a confusing manner, making it difficult for the reader to follow the process. The lack of a proper introduction and conclusion further limits the development of the response. To improve, the student should focus on clearly identifying the main stages of the diagram and ensuring the summary is comprehensive and meets the length requirement.

Coherence and Cohesion — Band 4.0

The response lacks paragraphing, which makes it difficult to navigate the information. Cohesive devices are used in a very mechanical and often incorrect way, such as the repetitive use of 'than' (likely intended as 'then') and 'passing this processing'. The progression of ideas is disjointed, and the lack of clear transitions between the stages of the geothermal process hinders the overall flow. The text reads more like a list of poorly connected sentences rather than a cohesive summary. Improving the use of linking words and organizing the information into logical paragraphs would greatly enhance the clarity of the writing.

Lexical Resource — Band 4.0

The vocabulary is very limited and often inaccurate. There are frequent errors in word choice and spelling, such as 'turbain' (turbine), 'zon' (zone), and 'tanker' (likely referring to the power grid or transmission lines). The student relies on basic, repetitive language to describe technical processes, which prevents a precise explanation of the diagram. Many phrases are awkward or non-standard, such as 'cold water is drawn to the pumped water'. To improve, the student needs to expand their range of vocabulary related to technical processes and focus on correct spelling and word formation.

Grammatical Range and Accuracy — Band 4.0

The response contains frequent grammatical errors that often impede communication. There is a lack of control over basic sentence structures, with many run-on sentences and incorrect verb tenses (e.g., 'water was heat up', 'water was pass'). Punctuation is largely absent or misused, and there is a consistent confusion between nouns and verbs. The range of structures is very limited, consisting mostly of simple, error-prone sentences. To improve, the student must focus on mastering basic sentence construction, subject-verb agreement, and the correct use of passive voice, which is essential for describing scientific processes.

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