The Universe

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. A collection of star systems (6)
  2. 6. The outermost region of the sun's atmosphere (6)
  3. 7. Energy that travels in waves or particles (9)
  4. 9. The number of occurrences within a given time period (9)
  5. 11. The transfer of heat through a fluid caused by molecular motion (10)
  6. 14. A magnifier of images of distant objects (9)
  7. 15. A relatively small extraterrestrial body consisting of a frozen mass that travels around the sun (5)
  8. 16. A ___ in the spectra of very distant galaxies toward longer wavelengths (8)

Down

  1. 1. Force that pulls objects toward the Earth (7)
  2. 2. Ball of burning gas shining in the night sky (4)
  3. 3. A region of space resulting from the collapse of a star (9)
  4. 5. The cosmic explosion that is hypothesized to have marked the origin of the universe (7)
  5. 8. Any of numerous small celestial bodies composed of rock and metal that move around the sun (plural) (9)
  6. 10. Austrian physicist famous for his discovery of the ___ effect (7)
  7. 12. An ordered array of the components of an emission or wave (8)
  8. 13. Any of the nine large celestial bodies in the solar system that revolve around the sun and shine (plural) (7)