Unit 3 Science Vocab

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