Across
- 2. - Beta positive radiation is a (8)
- 6. - Radiation from natural sources (10)
- 8. - Equipment used to detect radiation (6,7)
- 11. - Half-life is a measurement of the quantity of _____ (4)
- 12. - The type of radiation that is a high-energy electron (4)
- 13. - Most ionising radiation (5)
- 15. - A fast-moving particle (8)
- 18. - Lead is used as this for radiation (6)
- 20. - When a material now contains radioactive particles inside it, it has become (12)
- 21. - A use of gamma radiation in medicine (13)
- 22. - The name for the process of releasing nuclear radiation (5)
- 23. - Radiation that travels as a wave (5)
Down
- 1. - Unit used to measure radioactivity (9)
- 3. - Symbol for a radioactive warning (7)
- 4. - Time taken for half of a radioactive substance to decay (8)
- 5. - Radiation can be detected using a Geiger-Müller... (4)
- 7. - Alpha particles have this type of charge (8)
- 9. Beta particles are high energy ______ (9)
- 10. - Alpha particles are made of two protons and two... (8)
- 14. - What you call a nucleus that emits radiation (8)
- 16. - Beta particles have a _____ charge (8)
- 17. - The damage that radiation can do to living cells (8)
- 19. - is dangerous because it is said to be (8)
- 21. - The nucleus emits radiation to become more... (6)