Band 6.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.5 · IELTS Complete Catalyst · 2026-10-20

IELTS Writing Task 1 question

The diagram below shows the process for making a water clock.

Write a report for a university lecturer describing the information below.

HOW TO BUILD YOUR OWN WATER CLOCK

Student answer (Band 6.5)

The diagram illustrates the method by which a water clock can be created.

Overall, it is a seven step process that requires a water tap, two plastic bottles, a straw and some other accessories.

In this process, two plastic bottles are attached to a stand with tape. One bottle has a hole at the bottom and the another one's neck is been cut off which is kept at the bottom of the stand. A straw is placed at the top of the first bottle. At the first stage, a tap which is over the bottle is turned on and water starts to drop into the first bottle. At the same time, the hole at the bottom of the bottle is covered with finger. The water is now allowed to fill upto the top of the bottle untill it starts to overflow from the straw attached.

Once the bottle is filled up to the top, the finger is taken away from the hole and water from the first bottle starts to drop on the second bottle. This bottle is leveled to mark the water falling per minute and thus time can be calculated by measuring the water level. The same process can be repeated several times for time measurement.

AI examiner evaluation

Task Achievement / Task Response: Band 7.0

The report covers the main stages and gives a clear overview that this is a seven-step process. It accurately describes filling the upper bottle until water overflows through the straw, then allowing water to drip into the lower container and repeating the process. The account is generally grounded in the diagram and explains the clock’s purpose. Some details, however, are imprecise: the lower bottle is described as being “leveled to mark the water falling per minute,” whereas the diagram shows calibration lines being marked on its side; it also identifies the straw as being “at the top” rather than fixed near the top as an overflow drain. Clarifying how the levels are marked and used would make the explanation more complete and precise.

Coherence and Cohesion: Band 7.0

The information follows a clear sequence, moving from the apparatus and overview through filling, releasing the water, and repeating the timing process. Phrases such as “At the first stage,” “At the same time,” and “Once the bottle is filled” help the reader follow the stages. The paragraphing is simple but appropriate for this short process report. Some links could be more exact: “This bottle” is not immediately clear because two bottles have just been mentioned, and “This bottle is leveled” interrupts the explanation of water dripping into the lower container. Use explicit references such as “the lower bottle” and connect the calibration step directly to the measured water level for smoother progression.

Lexical Resource: Band 6.0

The vocabulary is adequate for describing the process, with relevant terms such as “overflow,” “attached,” “stand,” and “measuring the water level.” The writer also uses several suitable process expressions, including “starts to drop” and “taken away.” However, some word choices and collocations are imprecise or repetitive. “The water falling per minute” does not clearly express the marked water levels, and “time measurement” repeats the idea already conveyed by “time can be calculated.” “Accessories” is also vague for the materials shown. More precise terms for the apparatus and its function would improve flexibility and accuracy, while checking spelling in “untill” and the form “upto” would strengthen control.

Grammatical Range and Accuracy: Band 6.0

The response uses a mix of simple and complex sentences, including a relative clause in “which is kept at the bottom of the stand” and a time clause beginning “Once the bottle is filled up to the top.” Most meanings remain clear, but some grammatical errors occur. For example, “the another one's neck is been cut off” has problems with the article and passive verb form; “covered with finger” is missing an article; and “fill upto the top” needs a more accurate grammatical form. The sentence beginning “This bottle is leveled” also has an unclear subject reference, which affects clarity. Practise accurate passive constructions and articles, and review sentence structure when describing several actions in sequence.

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