Our Earth

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Across
  1. 2. Greek word for
  2. 4. pole to
  3. 5. They are
  4. 6. 0° meridian
  5. 13. circle designated
  6. 14. drift
Down
  1. 1. proposed
  2. 3. theory
  3. 7. It exists at the
  4. 8. 0°latitude
  5. 9. outer part of the
  6. 10. who proposed
  7. 11. from 100kms
  8. 12. land
  9. 15. 2900 Kms