iGCSE Physics - 5.2.4 Half Life SUPPLEMENT

This Powerpoint specifically uses the Cambridge iGCSE Syllabus and covers all criteria for – Unit 5.2.4 Half Life SUPPLEMENT

Calculate half-life from data or decay curves from which background radiation has not been subtracted

Explain how the type of radiation emitted and the half-life of an isotope determine which isotope is used for applications including:
(a) household fire (smoke) alarms
(b) irradiating food to kill bacteria
© sterilisation of equipment using gamma rays
(d) measuring and controlling thicknesses of materials with the choice of radiations used linked to penetration and absorption
(e) diagnosis and treatment of cancer using gamma rays

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a free pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
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