Unit 3 vocabulary-Morgan Hadley 4th period

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Across
  1. 5. Shows the relationship between a star's surface temp. and absolute magnitude.
  2. 7. Brightness of a star as seen from earth.
  3. 8. Distance light travels in a year(about 9.46 trillion kilometers).
  4. 12. Measurement of how bright a star would be if it was seen from standard distance.
Down
  1. 1. All the frequencies and wavelengths of electromagnetic radiation.
  2. 2. Giant explosion where a huge star collapses and throws its outer layers into space.
  3. 3. Star that collapsed under gravity to the point that the electrons and protons have formed neutrons.
  4. 4. Space and all the energy and matter in it.
  5. 6. Cloud of gas and dust where stars are born.
  6. 9. Actual brightness an object.
  7. 10. Stars, dust, and gas bound together by gravity.
  8. 11. Small, hot, dim star that used to be the center of a sun-like star.