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