Evidence for the Big Bang

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Across
  1. 3. the universe starts to grow
  2. 5. the light created during the Big Bang when photons were first released.
  3. 7. energy turns into quarks and electrons
  4. 8. protons and neutrons bond into nuclei
  5. 9. a decrease in wavelength and simultaneous increase in frequency and energy
  6. 11. describes the growth of the universe from a singularity into the universe we know today
Down
  1. 1. the universe is a singularity
  2. 2. photons are trapped by free electrons
  3. 4. the quarks bond into protons and neutrons
  4. 6. an increase in wavelength and simultaneous decrease in frequency and energy
  5. 10. nuclei and electrons bond into atoms