Across
- 4. What material blocks Gamma rays?
- 6. If ever exposed to radiation what is the first thing you do?
- 9. Is energy given off by matter in the form of rays or high-speed particles
- 10. Who discovered Radioactivity?
- 11. What country is the largest producer of nuclear power?
- 12. How many nuclear weapons have been used in warfare?
- 13. If the radioactive source is inside the body, it is the most dangerous of all 3 radiation sources?
- 15. What colour has the American flag on the moon turned to due to radiation?
Down
- 1. What is the most radioactive substance on earth?
- 2. What is one of the rays the sun emits?
- 3. If the radioactive source is outside the body, what is the most harmful radiation source?
- 5. Who survived the highest radiation dose in any human
- 7. How many bananas have the same amount of radiation to a small amount of uranium?
- 8. What is one thing that Marie Curie discovered?
- 14. What is the symbol of Polonium?