Unit 2 vocab

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Across
  1. 1. penetrating electromagnetic radiation of a kind arising from the radioactive decay.
  2. 3. is the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes.
  3. 5. A particle representing a quantum of light or other electromagnetic radiation.
  4. 7. A discrete quantity of energy proportional in magnitude to the frequency of the radiation.
  5. 9. Is a fast-moving electron emitted by the radioactive decay of substances.
  6. 10. radiation A kind of radiation including visible light,radio waves, gamma rays, and X-rays.
  7. 11. A spectrum of the electromagnetic radiation emitted by a source.
Down
  1. 2. energy that comes from a source and travels through space at the speed of light.
  2. 4. A helium nucleus emitted by some radioactive substances, originally regarded as a ray.
  3. 6. is an equation that identifies the nuclides involved in the reaction, their mass numbers and atomic numbers, and the other particles involved in the reaction.
  4. 8. The rate at which something occurs or is repeated over a particular period of time.