Across
- 3. a very radioactive chemical element of the uranium family (symbol: Ra)
- 5. elementary particle, electrically neutral, constituting the atomic nucleus
- 9. radiation, wave or invisible particle that certain unstable atoms, called radioactive, emit while transforming
- 10. radiation emitted by radioactive substances
- 11. the star round which the earth orbits
- 12. an extremely light elementary particle, normally revolving around the atomic nucleus, and charged with negative electricity
- 14. which acts like a poison on something. Most products of this type have a pyctogram with a skull.
- 15. power plant, a thermal power station in which the heat source is a nuclear reactor.
Down
- 1. the smallest particle of a chemical element that can exist
- 2. also call radiation “electromagnetic waves”
- 4. an expert in or student of physics
- 5. the type of energy released during a fission or fusion, especially when used to generate electricity
- 6. Curie, first woman to win a nobel prize, she did research on radioactivity
- 7. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge
- 8. particle (proton or neutron) constituting the atomic nucleus.
- 13. city of Ukraine where one of the biggest nuclear disasters occurred