Across
- 3. The most ionising type of radiation
- 4. A common use of alpha radiation
- 5. Contain Uranium in a nuclear reactor
- 8. Material that will block alpha radiation
- 9. Radiation is a ___ process
- 11. A material that undergoes nuclear fission
- 13. The time taken for a radioactive sample's activity to halve
- 14. The process where radioactive particles are incident on an object
- 16. Radiation made of an electron
- 18. Negative charged sub atomic particle
- 20. When unstable nuclei settle on an object
- 21. The process of a large nucleus splitting into two smaller ones
- 22. The most penetrating type of radiation
- 23. Slows down neutrons in a nuclear reactor
Down
- 1. Where one reaction leads to another in a continuous process
- 2. The number of protons and neutrons
- 6. Used as a moderator in nuclear reactors
- 7. The unit of radioactive activity
- 10. The left over products of a fission reaction
- 12. Types of atom of the same element
- 15. The number of radioactive counts per second
- 17. The number of protons in a nucleus
- 19. Absorb neutrons in a nuclear reactor