Earth, Sun & Moon System

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Across
  1. 4. 365 days (1 year)
  2. 6. a little part of the moon's right side is in sunlight
  3. 7. 24 hours (1 day)
  4. 8. The Sun and the group of planets and other celestial bodies that are held by their gravitational attraction and revolve around the Sun
  5. 10. about 3/4th of the right side moon's disk is in sunlight
  6. 13. revolve; composed mainly of hydrogen and helium
  7. 16. The imaginary line through Earth that extends from the north Pole to the South Pole and is the center of earth's rotation
  8. 17. An obscuring of the light from a celestial body by the passage of an object between the celestial body and the observer or between the celestial body and its source of illumination
  9. 19. A curved path followed by a satellite as it revolves around an object
  10. 20. The luminous star around which Earth and other
  11. 21. The slant of Earth’s axis, which is 23.5 degrees from vertical compared to Earth’s orbital plane around the Sun; as a result, the North Pole always points toward the North Star.
  12. 24. The full moon passes into Earth’s shadow, causing the moon to appear reddish in color when the Sun, Earth, and Moon directly line up; lasts 1–3½ hours
  13. 25. getting smaller
  14. 27. by nuclear reactions in its interior
Down
  1. 1. The shape of the illuminated portion of the Moon as seen by an observer, usually on Earth
  2. 2. A phenomenon or process that involves multiple steps and repeats itself
  3. 3. A celestial body that revolves around a planet
  4. 5. getting larger
  5. 9. the left half of the moon's disk is in sunlight
  6. 11. The Moon passes between the Earth and Sun, covering all or part of the Sun; occurs when the Sun, Earth, and moon directly line up; lasts for less than 12 minutes
  7. 12. The four natural divisions of the year based on changes in temperature due to the varied amounts of sunlight (both intensity and number of daylight hours received); caused by the tilt of Earth during revolution
  8. 14. A self-luminous celestial body consisting of a mass of gas held together by its own gravity in which the energy is
  9. 15. the moon's entire disk is in sunlight because the Earth is between the sun and the moon
  10. 18. the right half of the moon's disk is in sunlight
  11. 22. a little part of the moon's left side is in sunlight
  12. 23. the moon's disk facing us is dark because the moon is between the sun and the Earth
  13. 26. about 3/4th of the left side moon's disk is in sunlight