Science Cross Word Unit 3

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Across
  1. 5. Apparatus for recording and producing spectra for examination.
  2. 7. A barred spiral galaxy in which we live.
  3. 8. How people explain the universe began.
  4. 9. Everything including the energy of space.
  5. 11. Long period that waves move through.
  6. 13. An unmanned device sent into space.
  7. 16. The massive explosion of a star.
  8. 18. A place where gravity pulls so much that light cannot escape.
  9. 19. A regular repeating path in space that objects take around another.
  10. 20. A graph in which absolute magnitudes are plotted against their spectral types
  11. 23. The stellar core left behind after a dying star has exhausted
  12. 24. A self-luminescent body in space
Down
  1. 1. The distance light travels in one year.
  2. 2. Two atomic nuclei combine to make a larger one.
  3. 3. A period tides where the moon and sun are at right angles to each other.
  4. 4. A rotating circumstellar disk of dense gas surrounding a new star.
  5. 6. Electromagnetic radiation emitted by a source.
  6. 10. The tide during a new full moon
  7. 11. A device used to magnify distant images of objects.
  8. 12. Systems of stars that make up the universe.
  9. 14. An object that moves around a larger object.
  10. 15. The change in wavelength of frequency.
  11. 17. A quantity representing the amount of matter in a given object.
  12. 21. Force that exists between all objects in the universe.
  13. 22. An enormous cloud of dust acting as a nursery for new stars.
  14. 23. A force acting on an object due to gravity.