Earth Crossword

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Across
  1. 2. 1300 miles thick.
  2. 7. The point closest to the Sun.
  3. 8. The shortest day of the year, in December.
  4. 10. The longest day of the year, in June.
  5. 11. 4 miles thick and is dense.
  6. 12. Days and nights are the same length, in September.
  7. 14. 23 hours, 56 minutes, and 4 seconds long.
  8. 15. 1800 miles thick.
  9. 16. Days and nights are the same length, in March.
Down
  1. 1. Molten rock and metal underneath the lithosphere.
  2. 3. 1500 miles thick.
  3. 4. The point furthest away from the Sun.
  4. 5. One of Earth's main elements.
  5. 6. 24 hours long.
  6. 9. The speed needed to escape Earth's gravity.
  7. 13. 14-40 miles thick and is not dense.