Across
- 2. Radioactive dust from a nuclear explosion.
- 8. The unwanted presence of radioactive substances.
- 9. The central part of an atom.
- 13. The ability to do work.
- 14. The process of removing radioactive substances.
- 15. A severe nuclear reactor accident.
- 17. A radioactive isotope of hydrogen.
- 19. A process where nuclei split or combine.
- 21. The process of exposing something to radiation.
- 23. A highly radioactive element used in paints.
- 25. A particle emitted from a nucleus during decay.
- 27. The process of splitting a heavy nucleus into smaller ones.
- 28. A highly radioactive element discovered by Marie Curie.
- 29. A building material used for radiation shielding.
- 30. An instrument used for detecting radiation.
- 32. A positively charged particle in the nucleus.
- 34. A radioactive metal used as nuclear fuel.
Down
- 1. Invisible energy emitted by radioactive substances.
- 3. A type of radiation consisting of two protons and two neutrons.
- 4. A device that measures exposure to radiation.
- 5. Atoms with the same protons but different neutrons.
- 6. A particle with a negative charge that orbits the nucleus.
- 7. A device used to measure radiation levels.
- 10. A unit of radiation dose.
- 11. A radioactive element used in medical treatments.
- 12. The process of a nucleus breaking down.
- 14. A man-made element used in nuclear weapons.
- 16. Radioactive materials that are no longer useful.
- 18. An element commonly used as fuel in nuclear reactors.
- 19. A doctor who specializes in medical imaging.
- 20. A particle in the nucleus with no electric charge.
- 22. A device that initiates and controls a nuclear reaction.
- 24. The basic unit of a chemical element.
- 26. The combining of two light atomic nuclei.
- 30. High-energy electromagnetic radiation.
- 31. A radioactive gas that can accumulate in basements.
- 33. A barrier that protects against radiation.