P6 Revision

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Across
  1. 3. The spectra that appears as coloured lines on a black background
  2. 4. The place that fusion occurs
  3. 8. A type of radiation which consists of a high energy electron
  4. 10. Female scientist who pioneered the research we know about radioactivity
  5. 11. A type of radiation which consists of a helium nucleus
  6. 12. When an electron has gained enough energy to leave the atom
  7. 13. Radioactive can be described as this
Down
  1. 1. The most common unit to measure radioactivity
  2. 2. A process by which larger nuclei split into smaller nuclei
  3. 5. The most common material used in nuclear power stations
  4. 6. A wave of electromagnetic radiation that is emitted from a nucleus
  5. 7. A process by which smaller nuclei join to form larger nuclei
  6. 9. We say an electron is in this state when it has gained energy to be promoted to a higher energy level