Process Diagram

Band 7+: The diagram below shows a simple system that turns dirty water into clean water. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

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Image for topic: The diagram below shows a simple system that turns dirty water into clean water. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

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The image shows a water-filter assembly diagram consisting of a plastic barrel with a lid on top, where water is poured into. Inside the barrel, there are three layers: the top layer is sand, followed by a layer of charcoal, and the bottom layer is gravel. A small pipe is attached to the bottom of the barrel, connecting to a storage drum where the filtered water is stored. From the storage drum, there is a tap that dispenses drinking water into a cup.

Given the complexity of the image, the above description may not be entirely accurate.

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Note: Both the topic and the answer were created by one of our users.

The given diagram illustrates a water-filter assembly and its function. Overall, there are 2 main stages: filter unsafe water in a barrel and store in a different container.

Firstly, water is poured from the top of the barrel, filling half of it. Meanwhile, the bottom half contains three different layers of substance, namely sand, charcoal and gravel. These fine pellets are the important components, which helps purify water thoroughly. Moreover, a small tube is pinned to the lowest point of the container, used for sucking the filtered-water out of the first barrel before going on to the next one.

Regarding the second stage, purified water is going to travel into a storage drum. What’s special is that this container is placed lower than the other drum, creating a vacuum environment inside of the tube, which is the principle of sucking the water from the above barrel and keeping a stable flow to it. Unsafe water is now drinkable from the tap, possessing little risk of health harm.

Word Count: 167

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Overall Band Score

(+/- 0.5)

Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 6

barrel: 4

Try using synonyms for the above words

Task Response

The report adequately covers the main features of the water filter system, providing a general overview of the process. However, there is room for improvement in terms of detail and accuracy. For instance, the description of the layers in the barrel could be more precise, and the explanation of the water flow mechanism could be clearer. To improve, focus on providing more specific details and ensuring accuracy in your descriptions.

Coherence & Cohesion

The report is generally well-organized with a clear introduction, body, and conclusion. The flow of information is easy to follow. However, the use of cohesive devices could be improved to enhance the connection between ideas. For example, transitions between the description of the first and second stages could be smoother. Consider using more varied linking words and phrases to guide the reader through the process.

Lexical Resource

The report demonstrates a good range of vocabulary related to the topic of water filtration. Terms like 'purify,' 'substance,' 'components,' and 'vacuum environment' are used appropriately. To further enhance the lexical resource, consider incorporating more specific vocabulary related to filtration processes or the characteristics of the materials used. For instance, instead of 'fine pellets,' you could describe the specific grain size or properties of the sand, charcoal, and gravel.

Grammatical Range & Accuracy

The report demonstrates a good command of grammar with a variety of sentence structures. There are a few minor errors, such as subject-verb agreement ('helps purify water') and article usage ('the filtered-water'). While these errors do not significantly impede understanding, correcting them would improve the overall accuracy of the report. Pay close attention to these details during proofreading.

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