Unit 3: Earth in Space Crossword

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Across
  1. 3. Is known as the "ice planet"
  2. 5. There are ______ inner planets that are spheres of rock.
  3. 6. The planet that is the biggest of the four inner planets and the only one with liquid water on its surface.
  4. 9. The fourth planet from the Sun, known for its reddish color due to iron oxide on its surface.
  5. 10. This inner planet has a rotation period (day) that is longer than its revolution period (year).
  6. 12. The astronomical term for a celestial body that orbits a star and is large enough to be rounded by its own gravity, having cleared its orbital neighborhood.
  7. 15. The type of tide that occurs during the new moon and full moon when the Sun, Moon, and Earth are lined up, causing the highest high tides.
  8. 17. side, making its axial tilt extreme.
  9. 19. The number of Earth days it takes for Mercury to complete one year (its revolution).
Down
  1. 1. The smallest and innermost planet, which has the most eccentric orbit.
  2. 2. The event that occurs when Earth comes directly between the Sun and Moon during the full moon phase, blocking sunlight from reaching the Moon.
  3. 4. The planet famous for its distinct, extensive ring system, primarily composed of ice particles.
  4. 7. The period when the Moon is completely blocking the Sun during a total solar eclipse, lasting about 7.5 minutes.
  5. 8. The type of tide that occurs during the First and Last Quarter moon phases, resulting in the least difference between high and low tide.
  6. 11. The planet that rotates on its axis virtually on
  7. 13. The largest planet in the Solar System.
  8. 14. The path an object follows around another body in space.
  9. 16. The phase of the Moon when the Sun, Moon, and Earth are lined up, and the side facing Earth is completely in shadow.
  10. 18. The name of our galaxy, which contains the Sun and billions of other stars.
  11. 20. The force that causes the ocean waters to be pulled toward the Moon, resulting in tides.