Physics GCSE
reading decay graphs
What reading decay graphs means in Physics GCSE, as defined for AQA.
Definition of reading decay graphs
Check what you remember
Read the wording for your board, then hide it and explain reading decay graphs in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Correct for background, halve the initial count rate, read across to the curve and down to the time axis.
Topics that use reading decay graphs
Related terms
- background correction
- constant chance of decay
- fraction not number
- net decline as a ratio
- random decay
- steepest curve
- why activity falls
- dice model
Using reading decay graphs 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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