Across
- 7. A type of radiation made of 2 protons and 2 neutrons.
- 8. High-energy electromagnetic radiation with no mass or charge.
- 9. A device that shows the paths of charged particles as vapor trails.
- 10. The time it takes for half of a radioactive substance to decay.
- 12. The minimum amount of material needed to start a nuclear chain reaction.
- 14. Process where a large nucleus splits into smaller ones.
Down
- 1. A detector that uses liquid to show particle tracks as bubbles.
- 2. Process where two small nuclei combine to form a larger one.
- 3. When one element changes into another due to nuclear reactions.
- 4. A fast-moving electron released during radioactive decay.
- 5. The process of an unstable nucleus releasing energy or particles.
- 6. A radioactive isotope used to follow the path of a substance.
- 11. A device used to measure radiation levels.
- 12. A series of repeated nuclear reactions caused by released neutrons.
- 13. The force that holds protons and neutrons together in the nucleus.