Modern Physics TTT

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Across
  1. 3. A science fiction first person shooter game.
  2. 7. The first letter of the greek alphabet.
  3. 9. The second letter of the greek alphabet.
  4. 10. A process in which energetic particles or energetic waves travel through a vacuum.
Down
  1. 1. A disturbance or oscillation that travels through space and matter.
  2. 2. The third letter of the greek alphabet.
  3. 4. At times ____ behaves as a ____, at other times it behaves as a wave.
  4. 5. The process that powers the sun and the stars.
  5. 6. The splitting of something into two parts.
  6. 7. The basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons.
  7. 8. An elementary particle.