Across
- 4. Where Fission is used to make energy
- 5. Is the process of a nucleus decaying and emitting matter and energy
- 6. This is what continues Fission
- 8. Where the protons and neutrons are
- 11. Elements lowered into a reactor to absorb neutrons and slow down the reaction
- 12. The natural process where an unstable nucleus breaks down over time and gives off radiation
- 14. Nonrenewable energy sources formed deep underground over millions of years from buried remains
- 18. The part of an atom that starts Fission
- 19. Energy from sources that constantly refill naturally
- 21. The time it takes for half of the radioactive atoms in a sample to decay
- 23. An isotope of hydrogen
- 25. A severe accident where the reactor core overheats and melts
- 26. The process of combining two or more nuclei to form a larger nucleus
- 27. Atoms of an element all have the same # of protons but different # of neutrons
- 29. Is the number of protons in the nucleus
- 30. The process of splitting a nucleus into two or more smaller nuclei
- 31. The core structure where nuclear fission reactions take place
Down
- 1. Can be blocked by a sheet of paper, charge is +
- 2. A term used to describe an atomic nucleus that is likely to decay or split apart
- 3. The byproduct left after fission
- 7. # of protons + #of neutrons
- 9. The process of changing one element into a different element
- 10. Energy from sources that cannot be replaced once used
- 13. The sun is one of the things, they use Fusion
- 15. Commonly found in nuclear power plants
- 16. Where the electrons are found
- 17. Can be blocked by 3 mm of aluminum, charge is -
- 20. Is released during Fusion and Fission
- 22. Can be blocked by several meters of concrete or lead, no charge
- 24. The other element that is sometimes used in Fission
- 28. Force that causes protons and neutrons to be attracted to each other