Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · Cambridge IELTS 12 · 2026-09-16

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)

overall,the process invaluts various stages begining with evaporation of cold water and cumicating with hot water moreover produced steam to produce electricity

the process starts with evaporation of cold water tranform to hot water and produced stream with the help of hot water thare are some steps to make to produce electricity firsty open the flow of cold water after that cold water convert into hot water and produced steam

steam help to rotate the turbine and terbine rotate the generator and its produced electrecity after the production of electricity it transferred via higher voltage cables or tower

eventually, according to the need of voltage the electricity is supplied to yhe place for industries and domestic purpose lines school, hospital and factories it aal happen with the assistance of under cables

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response fails to meet the minimum length requirement of 150 words, containing only 131 words, which directly impacts the task achievement score. While the writer attempts to describe the geothermal energy process, the account is extremely superficial, inaccurate in places (mentioning 'evaporation' instead of pumping cold water underground), and omits crucial details such as the depth of 4.5 km or the specific cycle between the injection and production wells. The overview is poorly formed, starting abruptly with 'overall, the process invaluts various stages'. Ideas are underdeveloped, and key features of the diagram are missed, leading to a band score of 4.0.

Coherence and Cohesion — Band 4.0

The text suffers from severe structural and organizational issues. There is no proper paragraphing; the entire response is a single, poorly punctuated block of text with run-on sentences. Cohesive devices are either missing or misused, with repetitive transitions like 'after that' and 'and produced'. Progression is illogical and difficult to follow, as the steps jump between stages without clear sequencing or referencing. While some basic connectors like 'firstly' and 'eventually' are attempted, the overall arrangement lacks coherence, justifying a band score of 4.0.

Lexical Resource — Band 4.0

The vocabulary used is very basic and heavily repetitive, with numerous spelling errors such as 'invaluts' (involves), 'begining' (beginning), 'cumicating' (culminating), 'tranform' (transform), 'thare' (there), 'firsty' (firstly), 'terbine' (turbine), 'electrecity' (electricity), 'yhe' (the), and 'aal' (all). The writer attempts some technical terms from the prompt such as 'turbine', 'generator', and 'condenser', but lexical control is weak throughout. The range of vocabulary is inadequate for an Academic Task 1 response, resulting in a band score of 4.0.

Grammatical Range and Accuracy — Band 4.0

Grammatical control is extremely poor. The submission consists mostly of fragmented, run-on clauses linked improperly by conjunctions without adequate punctuation or capitalization. There are persistent errors in verb forms ('tranform' instead of transformed, 'produced' instead of producing), missing articles, and faulty sentence structures throughout. Complex sentences are rarely attempted accurately, and basic subject-verb agreement or tense consistency is frequently violated. This level of accuracy and range falls squarely into the band 4 descriptor.

See this exact question answered at other band scores — the same prompt compared across bands.

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