Nuclear Radiation 11He
Across
- 4. The least ionising type of radiation
- 5. The time taken for the radioactivity of a sample to halve
- 6. Negative particle in an atom
- 8. Uses beta radiation
- 11. Radiation which can penetrate paper but not aluminium
- 12. The splitting of large radioactive nuclei to release energy
- 14. The joining of small nuclei to release energy in stars
Down
- 1. Radiation consisting of two protons and two neutrons
- 2. Uses alpha radiation
- 3. Unit of radioactivity
- 7. Neutral particle in an atom's nucleus
- 9. Positive particle in an atom's nucleus
- 10. Radiation which can turn atoms into ions
- 13. First scientist to use the word radioactive