physics - Radioactivity
Across
- 3. imaging that produces inside structures of the body such as bones
- 6. speeding up
- 8. can stop beta but cant stop gamma
- 10. particle found in nucleous of an atom
- 11. positively charged nucleon
- 17. a half life archeological use of radiation
- 19. proton number
- 21. break down
- 22. move from normal path
- 23. total number of proton and neutrons
- 25. negatively charged particle
- 26. high speed electron
- 27. can not predict what is going to happen next
- 28. happens without external influence
Down
- 1. splitting up of heavy nucleus to get smaller nuclei
- 2. can detect all types of radiation
- 4. helium nucleus
- 5. joining of two lighter nuclei to form a one heavier nucleus
- 6. most ionizing type of radiation
- 7. causing to gain or lose charge
- 9. atoms of the same element with different masses
- 12. can stop gamma radiation
- 13. high frequency electromagnetic radiation
- 14. natural radiation in the environment
- 15. a medical use of gamma radiation
- 16. time taken for a half the mass of a radioactive sample to decay
- 18. does not deflect in magnetic or electric field
- 20. release of electrons from hot metal
- 24. used to count radiation