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