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Solar-Powered Drinking Water Production Process

The diagram below illustrates the process of producing drinking water using a solar-powered water pump and water filter.

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

2 sample answers, estimated Band 8.0. Your turn?

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From essays on this question

Key features: Solar-Powered Drinking Water Production Process

WhyThis is aProcess diagram — it asks you to explain a sequence from beginning to end.

SoWe split the points intoOverview(how many stages, and where it starts and ends)andStages(each step in order).

Overview

2 points

Stages

6 points

Same question · Different responses

Sample responses and feedback

Response 01

Must fixSuggested

Answer · 181 words · 4 paragraphs · 8 comments

Score details

Response 01
Estimated band8.0/ 9

Overall assessment

The response gives a clear overview and follows the water system logically from sunlight capture to collection. Its language is fluent, with varied structures and effective technical vocabulary. The main opportunities are to avoid repeating the unexplained six-stage grouping, describe the filter and outlet more directly, and trim evaluative wording. The converter supplying electrical power is a reasonable interpretation of the labelled energy route.

TA

Task Achievement

The response covers the main components and follows the process accurately from sunlight capture to collection. Its overview is clear, although the repeated six-stage grouping is not explained and the internal filter-to-outlet route could be described more precisely.

8.0
CC

Coherence and Cohesion

Progression is logical and cohesive with effective linking of stages, though the organisation is somewhat mechanical in its step-by-step pattern.

7.0
LR

Lexical Resource

Vocabulary is flexible and precise, using natural technical terms such as photovoltaic panel, elevated, and dispensed with only rare, minor imprecision.

8.0
GRA

Grammatical Range and Accuracy

A wide range of structures is used with strong control, including accurate passive forms, relative clauses and subordinate clauses. The prose is consistently grammatical, though some constructions could be made more economical.

8.0

What to work on next

Make the overview more informative by replacing the repeated stage count with the link between solar power, pumping and filtration. In the detail paragraph, name the filter inside the tank and follow the outlet to the tap and container.

From essays on this question

Useful vocabulary: Solar-Powered Drinking Water Production Process

From essays on this question

Sentence patterns: Solar-Powered Drinking Water Production Process

Practise this question

Write your response

Task 1 Academic question loaded.
Part 1

You should spend about 20 minutes on this task. Write at least 150 words.

Words: 020:00 starts on first word