Radiation

5. a disease caused by an uncontrolled division of abnormal cells in a part of the body
6. relating to the nucleus of an atom.
10. to spontaneously emit nuclear radiation
13. the emission of energy as electromagnetic waves
14. the study and treatment of tumors

1. the state of being exposed to contact with something
2. an illness that comes from eating contaminated food
3. are the heart of a nuclear power plant
4. a rare radioactive gas belonging to the noble gas series.
7. a dense gray radioactive metal used as a fuel in nuclear reactors
8. is a food safety process that uses radiation to kill germs that cause food poisoning
9. having been made impure by exposure to or addition of a poisonous or polluting substance
11. a technique for displaying a representation of a cross section through a human body or other solid object using X-rays
12. the basic unit of a chemical element.