Miscellaneous Crossword

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Across
  1. 3. What comes before thunder
  2. 5. The number of shades of purple on the rainbow
  3. 9. Australian city with a famous opera house
  4. 10. What comes after lightning
  5. 11. Coldest continent on earth
  6. 12. Companion to salt
Down
  1. 1. Sheriff Woody's best friend
  2. 2. How to respond when someone sneezes
  3. 4. Concept whose symbol looks like a sideways 8
  4. 6. "How much wood would a _________ chuck..."
  5. 7. 14 x 3
  6. 8. Where to go to watch a movie