Across
- 2. dark,flat areas on the moon's surface formed from huge ancient lava flows
- 4. an object that orbits around a planet
- 8. an imaginary line that passes through a planets center and its north and south poles, about which the planets rotate
- 9. the spinning motion of a planets on its axis
- 10. The part of a shadow surrounding the darkest part
- 11. the attractive forces between objects
- 13. one of the different apparent shapes of the moon as seen from earth
- 14. a loose collection of ice and dust that orbits the sun, typically in a long narrow orbit
- 16. the tide with the greatest difference between consecutive low and high tides
- 18. the tide with the least difference between consecutive low and high tides
- 20. a pattern or grouping of stars that people imagine to represent a image or object
- 21. The darkest part of the shadow
- 22. the blocking sunlight to the moon that occurs when earth is directly be between the sun and the moon
- 23. a streak of light in the sky produced by the burning of a meteoroid in earths atmosphere
- 24. either of the two days of the year on which the sun reaches its greatest distance north or south of the equator
- 26. a large round pit caused by the impact of a meteoroid
Down
- 1. a system of organizing time that defines the beginning,length,and divisions of a year
- 2. a chunk of rock or dust in space,generally smaller than an asteroid
- 3. the scientific law that states that every object in the universe attracts every other object
- 5. either of the two days of the year on which neither hemisphere is tilted toward or away from the sun
- 6. an object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit
- 7. the periodic rise and fall of the level of water in the ocean
- 12. The movement of an object around another object
- 15. the path of an object as it revolves around another object in space
- 17. the blocking of the sunlight to earth that occurs when the moon is directly between the sun and earth
- 19. an oval shape, which may be elongated or nearly circular
- 25. a ball of hot gas,primarily hydrogen and helium, that undergoes nuclear fusion
