Question detail
What are the key steps involved in producing potable water from fresh water sources?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
What are the key steps involved in producing potable water from fresh water sources?
Answer
The key steps in producing potable water include filtration to remove solid particles, followed by sterilisation to eliminate harmful microbes. Filtration typically involves passing water through filter beds, while sterilisation can be achieved using methods such as chlorination or ultraviolet light.
Explanation
A strong answer should directly address the approved learning objective to give reasons for the steps used to produce potable water. This question belongs to Potable water within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to potable water, and keeps the wording specific to AQA GCSE revision.
Common mistake
Common Mistake in Potable Water Production
Students often state that all steps in producing potable water are equally important without recognizing the specific reasons for each step.
Do not treat this as a general statement about potable water. Instead, answer by clearly linking the correction to give reasons for the steps used to produce potable water in Potable water. This keeps the response inside Using the Earth's resources and obtaining potable water and prevents a vague or off-topic GCSE answer. The mistake to avoid is: students often state that all steps in producing potable water are equally important without recognizing the specific reasons for each step.
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