Alpha, Beta, Gamma particles 4.0 / 5 based on 3 ratings ? PhysicsRadioactivityGCSEAQA Created by: LeahCreated on: 25-02-13 18:59 what are alpha particles? helium nuclei- 2 protons, 2 electrons 1 of 21 what is the alpha symbol? a 2 of 21 what information do we know about their penetration and ionising? they dont penetrate far but are highly ionising (as they are larger) 3 of 21 What are beta particles? fast-moving electrons 4 of 21 What is the beta symbol? B 5 of 21 what do we know about beta particles speed and size? They move quite fast and are small. 6 of 21 What do we know about beta particles ionising and penetration? Penetrate moderately and are moderately ionising 7 of 21 What happens when a beta particle is emitted? A neutron turns into a proton in the nucleus 8 of 21 What are gamma rays? Electromagnetic waves 9 of 21 what is the gamma ray symbol? Y 10 of 21 what do we know about gamma rays penetration and ionising? They penetrate very far, but are weakly ionising 11 of 21 A gamma ray is a proton with what? no mass or charge. 12 of 21 What does the gamma ray never do? alter the mass or proton number. 13 of 21 are alpha, beta and gamma deflected by electric and magnetic fields? alpha and beta are. 14 of 21 what charge does a alpha paticle have? positive 15 of 21 what charge does a beta particle have and what does this mean? Negative so deflected in the opposite direction to the alpha particles. 16 of 21 what is alpha radiation stopped by? paper or a few centimetres of air 17 of 21 what is beta radiation stopped by? thin metal or about a metre of air 18 of 21 what is gamma radiation stopped by? thick lead and has an unlimited range in air 19 of 21 What is the magnetic or electric field used for? to separate a beam of alpha, beta and gamma radiation. 20 of 21 What do the three types of radiation do to substances they pass through? ionise them 21 of 21
Comments
No comments have yet been made