Earth In Space Review Puzzler

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Across
  1. 4. divides Earth into N and S Hemispheres
  2. 5. longest and shortest day of the year
  3. 7. movement of Earth around the Sun
  4. 10. year with 366 days
  5. 11. winter, spring, summer, autumn
  6. 13. spinning of Earth on its axis
Down
  1. 1. 365 1/4 days
  2. 2. 90 degrees North and South latitude
  3. 3. name for March Equinox
  4. 4. equal day and equal night
  5. 6. division of Earth in two equal parts
  6. 8. 23.5 degrees slant of the Earth
  7. 9. source of Earth's energy
  8. 12. imaginary line passing through N and S Poles