P4 Radioactivity 5.0 / 5 based on 5 ratings ? PhysicsRadioactivityGCSEOCR Created by: [email protected]Created on: 14-12-14 18:06 What is the name of the equipment used to measure radioactivity? Geiger Counter 1 of 13 Radioactivity is the decay of which part of the atom? Nucleus 2 of 13 Is radioactive decay a random or ordered process? random 3 of 13 What is the name of the graph that shows the how radioactivity reduces over time? Halflife graph 4 of 13 The radioactivity of an isotope took 4 hours to decrease from 100Bq to 25Bq. What is its half-life? two hours 5 of 13 What is an alpha particle helium nucleus 6 of 13 What type of radioactivity is a fast moving electron? beta 7 of 13 What type of radioactivite particle consists of two protons and two neutrons? alpha 8 of 13 What is the name for an element with a different number of neutrons? isotope 9 of 13 Which type of radioactivity is the more penetrating gamma 10 of 13 With alpha decay, the mass number goes down by how many? four 11 of 13 Name a source of background radiation rocks 12 of 13 Gamma radiation is stopped by a thick sheet of... what? lead 13 of 13
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