Physical Science Period 7 Chapter 10 Jada Blanchard

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Across
  1. 4. a type of radiation that carries a positive electic charge
  2. 5. results from the process in which unstable atomic nuclei transform and emit radiation,and have existed longer than the human race
  3. 10. these atoms have an imbalance of neutrons and protons and are radioactive
  4. 11. the amount of time it take for HALF of the original quanitity of an element to decay
Down
  1. 1. a type of radiation that carries a negative electric charge
  2. 2. a type of radiation that carries no charge
  3. 3. when an atom goes under radioactive _____, it turns into a completely different element
  4. 6. alpha and beta particles are _________ in the presence of a magnetic or electric fields.
  5. 7. a alpha particle carries _ protons and neutrons (a Helium nucleus)
  6. 8. _________ is more intense at higher altitudes
  7. 9. gamma rays are __________ by magnetic and electric fields.