unit 3 vocab crossword

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Across
  1. 4. Magnitude a measure of how bright a star would be if it were seen from a standard distance
  2. 5. space and all the matter and energy in it
  3. 8. Year the distance that light travels in a year; about 9.46 trillion kilometers
  4. 9. a gigantic explosion in which a massive star collapses and throws its outer layers into space
  5. 11. the actual brightness of an object such as a star
  6. 12. Magnitude the brightness of a star as seen from Earth
Down
  1. 1. a large cloud of gas and dust in interstellar space; a region where stars are born
  2. 2. Dwarf a small hot dim star that is the left over center of an old sun like star
  3. 3. Spectrum- all of the frequencies or wavelengths of electromagnetic radiation
  4. 6. a collection of stars, dust, and gas bound together by gravity
  5. 7. Diagram Hertzsprung-Russell diagram a graph that shows the relationship between a star’s surface temperature and absolute magnitude
  6. 10. Star a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons