Across
- 7. A chemical element with symbol U and atomic number 92.
- 8. A reaction in which the material that starts the reaction is also one of the products and can start another reaction.
- 9. Alliance of Germany, Italy, and Japan during World War 2.
- 11. Alliance of Great Britain, Soviet Union, United States and France during World War 2.
- 12. An act of speaking to people with confidential, top secret information to see if they will secretly share it with another government.
- 14. The central core of an atom containing the protons and neutrons.
Down
- 1. "Lightning War" Type of fast-moving warfare used by German Forces against Poland in 1939
- 2. One that commits sabotage.
- 3. The techniques and skills used in espionage
- 4. The act of spying, especially government spy obtaining secrets of another government.
- 5. Energy formed by joining nuclei.
- 6. The breakdown of a radioactive element, releasing particles of energy.
- 10. Collapse, burning inward.
- 13. An economic system in which all means of production are owned by the people, private property does not exist and all goods and services are shared.