Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-09-26
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 depicts the usage of geothermal energy to generate electricity.
Overall, it is clear that geothermal zone perform a crucial role in converting cold water into hot water needed to generate electricity . In addition the injection well or production well both are responsible for the injection or extraction of water respectively.
Geothermal energy plays a vital role in production of electricity. In addition generator is the key component to produce electricity from the steam. It comprise turbine that could power it. Conversely, tower is the layout where the electricity distributed all over the area.
On the other hand, there is a 4.5km straight portion where the cold water pumped down into injection well. As compared to the production well where hot water is pumped. Subsequently the setup where a boiling water transformed into steam inside the condenser . Furthermore, turbine is a core mechanism where a pressurized steam is converted into electric energy via generator.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.5 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.5
The student covers the main stages of the geothermal energy process, mentioning the injection well, geothermal zone, production well, condenser, turbine, and generator. However, the overview is somewhat simplistic, and certain details are inaccurately or confusingly described, such as stating 'tower is the layout where the electricity distributed' (referring to a transmission pylon). While key features are identified, the progression is disjointed, and the depth of 4.5 km is included without fully integrating it into a clear comparative framework. According to Band 6 descriptors, the task is addressed, but some parts are under-developed or unclear.
Coherence and Cohesion: Band 5.0
The response is divided into logical paragraphs reflecting an introduction, overview, and body details. However, the logical progression is frequently disrupted by awkward transitions and isolated sentences. Cohesive devices are used mechanically or inappropriately, such as 'Conversely, tower is the layout...' where 'conversely' does not fit the logical relationship. Paragraphing is attempted, but internal cohesion within paragraphs lacks smooth flow, leading to a somewhat choppy reading experience that aligns with Band 5 descriptors.
Lexical Resource: Band 5.0
The student demonstrates an adequate vocabulary for describing a process, incorporating terms such as 'geothermal zone', 'condenser', 'turbine', and 'generator'. However, there are notable word choice and collocation errors, such as 'geothermal zone perform' (instead of performs), 'boiling water transformed' (instead of water is transformed), and calling an electricity transmission pylon a 'tower'. Less common vocabulary is attempted with limited accuracy, keeping the lexical score at Band 5.0.
Grammatical Range and Accuracy: Band 5.0
The text contains a mix of simple and complex sentence forms, but grammatical accuracy is weak throughout. There are frequent errors in subject-verb agreement (e.g., 'geothermal zone perform', 'generator is... It comprise'), missing auxiliary verbs (e.g., 'where the cold water pumped down', 'where hot water is pumped'), and awkward phrasing. These errors occasionally cause confusion for the reader, placing the grammar performance firmly at Band 5.0.
See this exact question answered at other band scores. The same prompt compared across bands.
Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.