Across
- 5. where radiation comes from
- 6. radiation used in thickness measurement
- 8. a subatomic particle with a positive charge
- 9. the radioactive element used in nuclear power
- 11. these should be used in radioactivity experiments
- 12. the most penetrating of the radiations
- 14. a subatomic particle with a negative charge
Down
- 1. radiation can be dangerous if it ..... atoms
- 2. the radiation which is around us all the time
- 3. gamma radiation is absorbed by thick .........
- 4. carbon 12 and carbon 14 are ........ of carbon
- 7. the most ionising of the radiations
- 10. radioactivity is a ........ process
- 12. the name of the counter used to detect radiation
- 13. alpha radiation is absorbed by