Nuclear Radiation 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: asho glenoCreated on: 10-04-15 11:14 Happens when an atom is... unstable 1 of 23 Is measured in... Becquerel, which means counts per second 2 of 23 An atom decays into a new atom and emits... an alpha particle 3 of 23 It has... 2 protons and 2 neutrons 4 of 23 It's charge is... 2+ 5 of 23 It has a... large mass 6 of 23 Strong... Ionising Power 7 of 23 Is blocked by... paper and thin card and a few cm of air 8 of 23 An atom decays into a new atom by changing a... neutron into a proton and electron 9 of 23 It has one... electron 10 of 23 It's charge is... -1 11 of 23 It has a... tiny mass 12 of 23 Small... ionising power 13 of 23 Is blocked by... meters of air and a few millimetres of aluminium 14 of 23 After alpha or beta decay, surplus energy is sometimes emitted... It has a very high frequency and a short wavelength 15 of 23 It is an... electromagnetic wave 16 of 23 Has no... charge or mass 17 of 23 Tiny... ionising power 18 of 23 Is blocked by... 10cm of lead 19 of 23 Background Radiation is ionising radiation from... space (cosmic rays) 20 of 23 from devices such as x-ray tubes and... from radioactive isotopes in the environment 21 of 23 Some of these isotopes are present because of nuclear... weapons testing and nuclear power stations 22 of 23 Other reasons could be due to food and drink... medical, air, and ground 23 of 23
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