Big Bang Crossword

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Across
  1. 4. One of two of the most abundant elements. #2 on the periodic table.
  2. 5. One of the two most abundant elements. #1 on the periodic table
  3. 9. The range of radiation
  4. 10. Small portion of matter
Down
  1. 1. From longer to shorter wavelengths
  2. 2. The theory that started the universe
  3. 3. Subatomic particles carrying an electric charge
  4. 6. Attraction between objects
  5. 7. All of space, matter, and energy
  6. 8. From shorter to longer wavelengths