Big Bang Theory

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Across
  1. 2. An instrument used to measure the intensity of light or other electromagnetic radiation.
  2. 4. A measurement of the progression of events from the past to the future
  3. 5. Unseen matter that does not emit, absorb, or reflect light, but has gravitational effects.
  4. 8. The study of the origin, structure, and evolution of the universe.
  5. 9. A point in space where matter is infinitely compressed and gravitational forces are infinite.
  6. 10. Density The amount of matter or energy required to close the universe
  7. 11. The unit of temperature in the Kelvin scale
  8. 12. A rapid expansion of space in the early universe, causing it to become larger and less dense
  9. 14. The distance that light travels in one year, approximately 5.88 trillion miles.
  10. 15. The apparent shift in the position of an object when viewed from different angles.
  11. 16. The change in frequency or wavelength of a wave as observed by an observer moving relative to the source
  12. 18. The interaction between electric and magnetic fields.
  13. 19. The shift of light towards longer wavelengths due to the expansion of the universe.
Down
  1. 1. The study of the interrelation of heat and mechanical energy
  2. 3. The scientific model that explains the origin of the universe as a rapid expansion from a hot, dense state.
  3. 6. A measure of the average kinetic energy of particles in a substance
  4. 7. The initial burst of light and energy that marked the beginning of the universe.
  5. 13. The process in which atomic nuclei combine to form heavier nuclei, releasing energy in the process.
  6. 17. The shift of light towards shorter wavelengths due to the motion of an object towards the observer.