Band 6.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.5 · Cambridge IELTS 21 · 2026-08-07

IELTS Writing Task 1 question

The diagram below shows how one type of desert, known as a rain-shadow desert, is formed.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The formation of rain-shadow deserts

Student answer (Band 6.5)

The provided chart demonstrates the sequential process involved in formation of rain-shadow desert, detailing the interaction between oceanic winds and mountainous terrain.

Looking from an overall perspective, it is crystal clear that the rain-shadow desert formation consists of seven distinct stages that illustrate how moisture-laden winds transform into arid conditions on the leeward side of mountains. Commencing with arrival of winds to the coast and culminating with reaching of dry winds in inshore regions.

At first glance, it is noticeable that initially, the process begins with winds originating from the ocean, which transport moisture towards the coastal region. Upon encountering a mountain range, these winds ascend along the windward slope. As the moist air rises, it experiences a drop in temperature, leading to condensation and cloud formation. Subsequently, precipitation occurs, resulting in rainfall on the windward side of the mountains, thereby nourishing the vegetation in that area.

Probing ahead, following the perception, the dry air continues its journey over the mountain summit descends towards the leeward side. At this stage, the air is significantly depleted of moisture, creating arid conditions. Consequently, as these dry winds advance further inland, they lead to the establishment of a rain-shadow desert, characterized by scant rainfall and limited vegetation, contrasting sharply with the verdant landscape on the windward side.

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The response effectively addresses the task by summarizing the process of rain-shadow desert formation. You have identified the key stages, from the moisture-laden winds at the coast to the arid conditions on the leeward side. The overview is clear and sets the stage for the detailed description that follows. You have successfully compared the windward and leeward sides, highlighting the contrast in vegetation and rainfall. The information is well-selected and logically presented, covering all necessary aspects of the diagram without unnecessary detail. The response is well-structured and fulfills the requirements of an academic report.

Coherence and Cohesion — Band 6.5

The essay is logically organized with a clear progression of ideas. Each paragraph has a distinct focus, moving from the introduction and overview to the specific stages of the process. You have used a variety of cohesive devices such as 'subsequently', 'consequently', and 'commencing with' to link ideas effectively. The paragraphing is appropriate, and the flow of information is smooth. While some transitions are slightly formal, they contribute to the overall coherence of the text. The referencing is clear, and the relationship between the different stages of the process is easy to follow.

Lexical Resource — Band 6.0

You have demonstrated a good range of vocabulary appropriate for describing a scientific process. Terms such as 'moisture-laden', 'windward slope', 'leeward side', and 'verdant landscape' are used accurately and enhance the quality of the response. There is a clear attempt to use less common lexical items, and your word choices are generally precise. While there are minor issues with article usage (e.g., 'in formation of rain-shadow desert'), these do not impede communication or significantly detract from the overall lexical control. The vocabulary is varied and fits the academic context well.

Grammatical Range and Accuracy — Band 6.0

The response displays a good variety of complex sentence structures, such as participial phrases ('Commencing with...', 'characterized by...') and subordinate clauses. The majority of your sentences are error-free, and your control over grammar and punctuation is strong. There are a few minor slips, such as the missing articles in 'in formation of rain-shadow desert' and 'with arrival of winds', but these are infrequent and do not affect the clarity of the message. Your ability to combine simple and complex structures effectively demonstrates a high level of grammatical competence.

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