Question detail
The table below shows the proportions of gases in the Earth's atmosphere: Nitrogen: 78%, Oxygen: 21%, Argon: 0.93%, Carbon Dioxide: 0.04%. Based on this data, what is the approximate percentage of other gases in the atmosphere?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
The composition and evolution of the Earth's atmosphere
Question
The table below shows the proportions of gases in the Earth's atmosphere: Nitrogen: 78%, Oxygen: 21%, Argon: 0.93%, Carbon Dioxide: 0.04%. Based on this data, what is the approximate percentage of other gases in the atmosphere?
Answer
The approximate percentage of other gases in the atmosphere is about 0.03%. This is calculated by subtracting the total percentage of the major gases (Nitrogen, Oxygen, Argon, and Carbon Dioxide) from 100%.
Explanation
A strong answer should directly address the approved learning objective to interpret simple data showing the proportions of gases in the atmosphere. This question belongs to The proportions of different gases in the atmosphere within The composition and evolution of the Earth's atmosphere, 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 atmosphere, and keeps the wording specific to AQA GCSE revision.
Common mistake
Misinterpreting Gas Proportions
Students often misinterpret data showing the proportions of gases in the atmosphere, confusing the percentages of nitrogen and oxygen.
To fix this, carefully review the data and remember that nitrogen makes up about 80% and oxygen about 20% of the atmosphere.
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