Nuclear Energy Project

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

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