Across
- 2. high energy electromagnetic radiation
- 4. the nucleus of an atom in which the forces among its particles are balanced
- 6. an elementary particle with a negative electrical charge
- 9. a naturally occurring radioactive element whose principal isotopes are uranium-238 (U-238) and uranium-235 (U-235)
- 10. energy moving in the form of particles or waves
- 11. exposure to radiation
Down
- 1. electromagnetic radiation caused by deflection of electrons from their original paths, or inner orbital electrons that change their orbital levels around the atomic nucleus. X-rays, like gamma rays can travel long distances through air and most other materials
- 3. a combination of 2 or more atoms
- 5. a discrete "packet" of pure electromagnetic energy
- 7. a small atomic particle, typically found within an atom's nucleus, that possesses a positive electrical charge
- 8. the process of spontaneous transformation of the nucleus, generally with the emission of alpha or beta particles often accompanied by gamma rays