Question detail
Which option best applies atmosphere for Atmospheric pressure (physics only) in AQA GCSE Physics Forces?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Pressure and pressure differences in fluids (physics only)
Question
- A. It becomes less dense — calculation focus for atmosphere
- B. This confuses force and pressure and does not answer Atmospheric pressure (physics only).
- C. This is too vague because it does not use the force or motion quantity named in the objective.
- D. This reverses the physical cause and effect for Pressure and pressure differences in fluids (physics only).
Answer
The correct answer is: It becomes less dense — calculation focus for atmosphere
Explanation
The correct option is It becomes less dense — calculation focus for atmosphere. It becomes less dense — calculation focus for atmosphere is correct because it matches the approved learning objective to (Physics only) Explain that the atmosphere becomes less dense at greater height. This answer belongs to Atmospheric pressure (physics only) within Pressure and pressure differences in fluids (physics only), so it must use precise AQA GCSE Physics forces and motion vocabulary. The other options are wrong because they either confuse force and pressure, omit the required force or motion condition, or move away from the exact subtopic being tested.
Common mistake
Misunderstanding Atmospheric Density
Students often think that the atmosphere becomes less dense due to a lack of air particles rather than the weight of the air above compressing the air below.
Emphasize that as height increases, there is less air above to exert pressure, leading to lower density, and relate this to the concept of atmospheric pressure.
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