Nuclear Energy and Radioactive Materials Crossword Puzzle

QUESTIONS LIST: alpha particle: has 2 protons and 2 neutrons, is very slow, and can be stopped by paper, alpha decay: results in a new element mass number decreases by 4 and atomic number decreases by 2, beta decay: mass number stays the same and atomic number increases by 1, nuclear fusion: the process where 2 smaller nuclei join together to form a larger nucleus, nuclear fission: the process where a nucleus splits into smaller pieces, background radiation: naturally occurring radiation from cosmic rays or radioactive isotopes found in water, soil, and plants, gamma ray: fastest moving particle can be stopped by lead or concrete, transmutation: the transformation of the nucleus of an atom so that the atom is changed from one element into a different element, strong nuclear force: causes protons and neutrons in the nucleus to attract one another, radioactivity: the process whereby an unstable atom undergoes radioactive decay to become stable, beta particle: small and fast moving particle and can be stopped by wood, chain reaction: a series of continuous fission reactions, conservation laws: mass number is conserved and electrical charge is conserved