Radiation and their Uses 0.0 / 5 ? PhysicsRadioactivityGCSEOCR Created by: Former MemberCreated on: 11-03-14 20:41 Radioactivity comes from an -------- nucleus unstable 1 of 11 An ----- particle consists of two protons and two electrons alpha 2 of 11 A beta particle is a fast moving -------- electron 3 of 11 Alpha particles are ---- -------- good ionisers 4 of 11 Beta electrons can be stopped by a sheet of --------- aluminium 5 of 11 Gamma rays are --------------- ----- electromagnetic waves 6 of 11 Gamma rays can be used to treat ------ cancer 7 of 11 ----- --- ---- are good tracers Gamma and beta 8 of 11 ----- is used in smoke alarms Alpha 9 of 11 Background radioactivity includes the Earth's ----- rocks 10 of 11 51% of background radiation comes from ----- --- radon gas 11 of 11
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