Proportionality
What Proportionality means in Combined Science GCSE, as defined for AQA.
Definitions of Proportionality
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Proportionality in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A straight line through the origin on a rate against 1 ÷ distance² graph shows rate is proportional to light intensity.
A relationship in which one quantity is a constant multiple of another, so doubling one doubles the other.
Topics that use Proportionality
- Key ideas (AQA GCSE)
- Rate of photosynthesis (AQA GCSE)
Related terms
- Gradient
- Action at a distance
- Activation energy
- Active site
- Adaptation
- Anaerobic respiration
- Carbon and nitrogen cycles
- Catalysts
Using Proportionality in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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