Nuclear Radiation 2

123456
Across
  1. 2. Type of nuclear radiation with the most penetrating power
  2. 5. The number of decays per second, measured in Bq
  3. 6. Radioactive...:The process during which unstable nuclei emit radiation
Down
  1. 1. Material that blocks alpha radiation
  2. 3. Material that blocks alpha and beta radiation
  3. 4. ... rate: The number of decays recorded per second by a Geiger counter
  4. 5. Type of nuclear radiation that consists of two protons and two neutrons