Lesson 1

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Across
  1. 1. imaginary line that the earth spins on
  2. 3. a huge ball of hot gases that produces its own light
  3. 5. this day happens in both Spring and Fall and has equal hours of day and night
  4. 6. to go around something in a circle
  5. 11. an object that is large enough to clear its own orbit
  6. 12. when Earth's axis points away from the sun
Down
  1. 2. short term changes in climate
  2. 4. when Earth's axis points toward the sun
  3. 7. the path an object takes around another object in space
  4. 8. an object that revolves around another in space
  5. 9. to spin on an axis
  6. 10. force of attraction between all objects