Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · Cambridge IELTS 12 · 2026-10-05

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 4.5)

First of All geothermal powerpalnt is used to produce energy . cold water is present on land firstly this water is pump inside land and reaches towards the geothermal zone where it converts to hot water this process is done after this process hot water is pump out for reaching the condenser .condenser is a apparatus where hot water actually converts in to steam when it reaches to condenser hot water converts into steam than it reaches to turbine machine which starts working when steam reaches into it and at the end when turbine starts it is connected to the generator which convert this into electricity

AI examiner evaluation

Task Achievement / Task Response: Band 4.0

The response responds to the task only minimally and fails to meet the required 150-word minimum, falling short at 106 words. While the writing attempts to describe how geothermal energy produces electricity by mentioning cold water, the geothermal zone, the condenser, the turbine, and the generator, the information is presented in a very basic and limited way. Key details from the diagram, such as the 4.5 km depth of the injection well and the distinction between the injection and production wells, are omitted or poorly reported. The overall summary lacks a clear, structured overview of the multi-stage process.

Coherence and Cohesion: Band 5.0

The text displays some basic organization, beginning with an introductory statement and tracing the steps of the process sequentially. However, there is no clear paragraphing, as the entire response is written as a single, dense block of text. Cohesive devices are minimal, repetitive, and mechanical, relying heavily on simple connectors like 'then', 'after this process', and 'at the end'. Referencing and logical progression are weak, leading to a confusing flow of ideas where sentences run into one another without clear logical transitions.

Lexical Resource: Band 5.0

The vocabulary used is limited and repetitive, demonstrating a basic range sufficient only for simple communication. There are noticeable errors in word choice, spelling, and word forms, such as 'powerpalnt' instead of 'power plant' and 'apparatus' used awkwardly. The student attempts some topic-specific vocabulary related to the diagram, such as 'condenser', 'turbine', and 'generator', but general imprecision and basic phrasing constrain the effectiveness of the writing and can cause some difficulty for the reader.

Grammatical Range and Accuracy: Band 4.5

The grammatical range is very limited, consisting mostly of simple and run-on sentences joined by coordinating conjunctions or weak punctuation. There is a complete lack of complex sentence structures, and punctuation is largely absent, with missing capitalization and periods throughout the text. Frequent errors in verb forms, such as 'is pump' instead of 'is pumped', and missing articles, such as 'reaches to turbine machine', occur across the response and frequently strain meaning and readability.

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.