The Earth and the Sun Crossword

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Across
  1. 3. like a circle
  2. 4. number before six
  3. 7. there are eight planets in our .... system
  4. 9. something small
  5. 11. 365 days
  6. 12. number after seven
  7. 13. Earth, Venus and Mars are ...
Down
  1. 1. 3rd
  2. 2. Australia and China are ...
  3. 5. the sun's ... are warm
  4. 6. to go from one place to the next
  5. 8. the Earth going around the Sun
  6. 10. opposite of farthest
  7. 13. there are two of them: North and South ...