Nuclear Physics

4. when protons and neutrons form the nucleus
7. should be called a nuclear bomb
10. two nucleons can't do the same thing at the same time
14. dating old objects by counting the number of electrons in an excited state
16. collective name of protons and neutrons
17. just a form of a given element with a different number of neutrons
18. high number of nucleons to a low number
20. radioactive debri
21. anti-particle of an electron

1. tends to be lean with no radioactive isotopes
2. low number of nucleons to a high number
3. consequence of fusion occuring at very high temperatures
5. identifying isotopes from their characteristic half lives, decay particles and energy by applying neutrons
6. 100 times as strong as an electrical force
8. makes use of gravity to sustain fusion
9. when nucleons are forced together
11. replacing atoms with a radioisotope to unveil it's origins
12. all of them have one proton
13. their half-life is only 18 minutes because they are unstable by themselves
15. most useful for dating anything that has been alive
19. a form of brute for that causes a nuclear force