Proportional reasoning
What Proportional reasoning means in Combined Science GCSE, as defined for AQA.
Definitions of Proportional reasoning
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Reference: AQA
A simple model in which a factor that increases the frequency of successful collisions by a given factor increases the rate by roughly the same factor when other conditions stay constant.
Doubling one factor while others remain constant doubles the force, as when doubling the current with B and l fixed.
In the equation W = m × g, g tells you the weight per unit mass.
Topics that use Proportional reasoning
- Collision theory and activation energy (AQA GCSE)
- Fleming's left-hand rule (HT only) (AQA GCSE)
- Gravity (AQA GCSE)
Related terms
Using Proportional reasoning in the exam
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