Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-09-30
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 5.0)
This Given Diagram illustrate to produce electricity by using geothermal energy.
Firstly, Cold Water Pumped in and going down towards injection well by travelling approximately 4.5 kilometer. After reaching in injection well this cold water goes through hot rocks in the geothermal zone. when water passes through geotrhermal zone and going towards production well it gets enough heat through hot rocks and becomes hot water after reaching in the production well.
Secondly, the hot water pumped up to condenser where it becomes more heated and converted into steam. as this heated water converted into steam.
Finally, steam falls on the turbine and turbine is connected with genrator as steam falls on the turbine ity gives turbine enough power to rotate. turbine starts rotating and gives power to generator and generator produce Electricity and gives electricity through poles to people for their daily use.
in conclusion, Electricity can be produced through geothermal energy but it involves a lot of stages to produce electricity.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The student attempts to describe the main stages of the geothermal power plant process, starting from the cold water tank and injection well down to the turbine and generator. However, the response falls short in several areas. There is no introductory overview of the process, which is a key requirement for Academic Task 1. Furthermore, some of the descriptions are inaccurate or confused; for instance, stating that the hot water 'becomes more heated and converted into steam' in the condenser misrepresents the actual thermodynamic sequence. While the response covers the general flow of the diagram, the lack of an overview and the presence of minor mechanical inaccuracies restrict the score to a Band 5.0.
Coherence and Cohesion: Band 5.0
The text is divided into paragraphs, including an attempt at an introduction, body stages, and a conclusion. Cohesive devices such as 'Firstly', 'After reaching', 'Secondly', and 'Finally' are used to sequence the steps of the process. However, the organization suffers from mechanical and repetitive transitions. The referencing is sometimes unclear, particularly with pronouns like 'it' and 'this', and the overall progression feels somewhat disjointed due to run-on sentences and poor punctuation. Paragraphing could be used more purposefully to separate distinct phases of the plant operation. These issues place the response firmly in the Band 5.0 category.
Lexical Resource: Band 5.0
The vocabulary used is relatively basic and repetitive, relying heavily on terms lifted directly from the prompt and diagram labels, such as 'geothermal energy', 'cold water', 'injection well', 'hot rocks', 'production well', 'condenser', 'turbine', and 'generator'. There are noticeable word-choice errors and awkward collocations, such as 'Cold Water Pumped in and going down towards injection well' and 'geotrhermal zone'. Attempts to use less common vocabulary are very limited, and spelling slips ('genrator', 'geotrhermal') occur. The lexical range is minimally adequate for the task, corresponding to a Band 5.0.
Grammatical Range and Accuracy: Band 5.0
The response displays a very limited range of grammatical structures, relying primarily on simple sentences and clumsy attempts at complex clauses. There are frequent grammatical errors, particularly with verb forms, subject-verb agreement, and missing articles (e.g., 'This Given Diagram illustrate', 'steam falls on the turbine and turbine is connected', 'generator produce Electricity'). Punctuation is also weak, with several run-on sentences lacking proper terminal punctuation or capitalization, such as 'as this heated water converted into steam.' These frequent errors cause occasional difficulty for the reader and reflect Band 5.0 characteristics.
See this exact question answered at other band scores. The same prompt compared across bands.
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