Across
- 2. Type of nuclear radiation with the most penetrating power
- 5. The number of decays per second, measured in Bq
- 6. Radioactive...:The process during which unstable nuclei emit radiation
Down
- 1. Material that blocks alpha radiation
- 3. Material that blocks alpha and beta radiation
- 4. ... rate: The number of decays recorded per second by a Geiger counter
- 5. Type of nuclear radiation that consists of two protons and two neutrons