7.11 know that the activity of a radioactive source decreases over a period of time and is measured in becquerels The activity of a radioactive source decreases over a period of time and is measured in becquerels. stuart2019-06-28T08:13:38+00:00Categories: (b) Radioactivity, 7 Radioactivity and particles, Edexcel iGCSE Physics, Uncategorized|Tags: Double, GCSE, GCSE_Physics_SpecPoint, Physics, SpecPoint, Topic: Radioactivity| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
