Across
- 2. dating the process of estimating the age of a once-living material
- 3. fission the energy released as kinetic energy
- 4. the unit for measuring radiation dosage in humans based on harm to living tissue
- 6. atomic nuclei have an imbalanced neutrons and protons
- 7. radiation high-frequency electromagnetic radiation
- 8. alpha particle consists of two protons and two neutrons
- 9. when unstable atomic nuclei transform and emit radiation
Down
- 1. the changing of an atomic nucleus of one element into another
- 2. mass the minimum mass of fissionable material needed for a sustainable chain reaction
- 5. the rate of decay of a radioactive isotope