Nuclear Energy

3. acts on subatomic particles that are extremely close together and overcomes the electrostatic repulsion.
4. a series of nuclear reactions that begins with an unstable nucleus and results in the formation of the stable nucleus.
7. process of determining the age of an object by measuring the amount of a certain radioisotope remaining in that object.
9. a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle with the release of energy.
11. ability of radiation to pass through matter
12. process, which involves striking nuclei with high-velocity particles.
14. the time required for one-half of a radioisotope’s nuclei to decay into its product.
15. a radioactive decay process that involves the emission of a positron from a nucleus

1. the area on the graph within which all stable nuclei are found
2. a particle with the same mass as an electron but opposite charge
5. form of high energy electromagnetic radiation.
6. isotopes of atoms with unstable nuclei.
8. what protons and neutrons are referred to as
10. such a reaction, in which an atom’s atomic number is altered
13. occurs when the nucleus of an atom draws in a surrounding electron, usually one from the lowest energy level.