Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-09-28
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 5.0)
The diagram below shows how geothermal energy is used to produce electricity in limited sources.
Overall,the geothermal power point is started from cold water afterwards, limited process. It's ended and become a complete power plant.
Cold water is pumped down about 4.5km with the injection well and it's become in Geothermal zone which is known as hot rocks. Similarly the process goes on and consistently hot water is pumped up which represents as the production well.
Particularly, hot water has entered next section and water is being becomes a steam through condenser. The process is goes on and steam process altered into turbine that is consider about powered by steam. After turbine process it's carry out on further cycle that's generated by generater and it's almost done of powered by turbine and produces electricity. Then we can easily observe that the geothermal power plant is completely done.
In sum up, the geothermal process is complete with restricted process and initially cold water transformed into eventually electricity power.
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 response attempts to describe the geothermal energy process, but it falls short of effectively summarising the main features and comparisons. While the writer mentions the 4.5 km depth and the injection well, the description of the subsequent stages is disjointed and heavily reliant on vague phrasing, such as 'the process goes on' and 'it's almost done.' Furthermore, the overview provided in the second paragraph is unclear and fails to give a coherent summary of the cyclical or linear nature of the process. Important components like the condenser, turbine, and generator are mentioned, but their exact relationships and functions are poorly articulated. The response addresses the task only partially, corresponding to a Band 5 level.
Coherence and Cohesion: Band 5.0
The response is organised into paragraphs, but the logical progression is weak. Cohesive devices are either missing or used inaccurately, leading to disjointed sentences and ideas. For example, transition phrases like 'Particularly' and 'In sum up' are misused or non-standard. Referencing is frequently unclear, making it difficult to follow the sequence of the diagram (e.g., 'the process is goes on and steam process altered into turbine'). Paragraphing is attempted, but the internal cohesion within paragraphs fails to guide the reader smoothly through the stages of the process, resulting in a Band 4.5 to 5 performance, rounded to 5.0.
Lexical Resource: Band 5.0
The vocabulary used is very basic and repetitive, with frequent word-choice errors and awkward collocations. Examples include 'geothermal power point', 'water is being becomes a steam', and 'electricity power'. The student attempts some less common technical terms from the diagram, such as 'injection well', 'production well', and 'condenser', but struggles to use them accurately within grammatical frames. The range of vocabulary is limited and minimally adequate for conveying basic meaning, fitting the Band 5 descriptor.
Grammatical Range and Accuracy: Band 5.0
The grammatical range is extremely limited, consisting mostly of simple and attempted complex sentences that are heavily flawed. There are frequent, persistent errors in tense, voice, and sentence structure, such as 'is started from cold water afterwards', 'it's become in Geothermal zone', and 'The process is goes on and steam process altered into turbine'. Punctuation and article usage are also problematic throughout. These frequent errors cause significant difficulty for the reader and obscure the intended meaning, placing this criterion firmly at Band 4.5 to 5.0.
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