Sun-Earth-Moon Vocabulary

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Across
  1. 3. The lit part of the moon becomes smaller until only the eastern half of the Moon is visible; This is the third quarter phase.
  2. 8. When the entire western half of the moon is lit; The start of the lunar cycle.
  3. 12. These are the oldest and most highly-cratered regions of the moon.
  4. 15. The large, dark, flat areas on the moon.
  5. 16. This phase is when the Moon's near side is completely lit.
  6. 17. The portion of the Moon or a planet reflecting light as seen from Earth.
  7. 18. This phase is when the Moon's near side is completely dark.
  8. 19. When the Sun and Moon's gravitational effects combine and produce higher high tides and lower low tides.
  9. 21. When the Sun, Earth, and Moon form a right angle, the Sun's effect on the tides reduces the Moon's effect;When these tides occur, high tides are lower, and low tides are higher.
  10. 22. An occurrence during which the Moon's shadow appears on Earth's surface.
  11. 23. Phases of the moon during which less of the Moon's near side is lit each night.
  12. 24. Phases of the moon during which more of the Moon's near side is lit each night.
Down
  1. 1. When Earth's rotation axis is tilted neither toward nor away from from the sun.
  2. 2. Round depressions formed on the surface of a planet, moon, or other space object by impact of a meteorite.
  3. 4. The orbit of one object around another object.
  4. 5. The central, darker part of a shadow where light is totally blocked.
  5. 6. The path an object follows as it moves around another object.
  6. 7. When Earth's rotation axis is tilted toward or away from the sun.
  7. 9. The spin of an object around its axis.
  8. 10. The lighter part of a shadow where light is partially blocked.
  9. 11. The periodic rise and fall of the ocean's surface caused by the gravitational force between Earth and the Moon, and Earth and the Sun.
  10. 13. An occurrence during which the Moon moves into Earth's shadow.
  11. 14. These streaks extend outwards from moon craters.
  12. 20. The line on which and object rotates.