Across
- 2. a unit of energy equal to 4.184 gigajoules (1 gigacalorie)
- 4. The very dense region consisting of protons and neutrons at the center of an atom.
- 6. A type of radioactive decay in which an atomic nucleus emits an particle and thereby transforms (or 'decays') into an atom with a mass number 4 less and atomic number 2 less.
- 9. an instrument used for measuring ionizing radiation.
- 11. electromagnetic radiation with longer wavelengths than those of visible light
- 13. an explosive device that derives its destructive force from nuclear reactions
Down
- 1. A subatomic hadron particle that has no net electric charge and a mass slightly larger than that of a proton.
- 3. An atom with an unstable nucleus, characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or via internal conversion.
- 5. a process in which electromagnetic waves (EMR) travel through a vacuum or through matter-containing media.
- 7. High-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei
- 8. a form of electromagnetic radiation generated for medical and industrial uses.
- 9. electromagnetic radiation of extremely high frequency and therefore high energy per photon.
- 10. a subatomic particle with a positive electric charge of 1 elementary charge.
- 12. The process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation.