Isaac´s vocabulary crossword.

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Across
  1. 1. Belt of constellations along the ecliptic.
  2. 5. The longest or shortest day of the year.
  3. 7. A recognizable pattern of stars.
  4. 8. The Sun´s apparent path across the sky.
  5. 9. Motion Earth´s yearly movement around the Sun.
  6. 10. Related to objects in space.
  7. 14. Motion Apparent backward movement of a planet.
  8. 15. Model Model with Earth at the center.
  9. 16. When day and night are nearly equal.
  10. 17. Model Model with the Sun at the center.
Down
  1. 2. Sphere Imaginary sphere surrounding Earth.
  2. 3. Motion Daily apparent movement of the sky.
  3. 4. A period of the year with specific weather patterns.
  4. 6. Ancient idea of a substance filling space.
  5. 8. When one celestial body blocks another.
  6. 11. Related to Earth or rocky planets.
  7. 12. Large circle used in ancient planetary models.
  8. 13. A figure-eight pattern showing the Sun´s position.
  9. 16. Small circle used to explain planetary motion.