Across
- 3. eclipse The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
- 6. A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.
- 8. Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator.
- 11. The attractive force between objects; the force that moves objects downhill.
- 12. The periodic rise and fall of the level of water in the ocean.
- 13. An object that orbits a planet.
- 14. Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun.
- 15. tide The tide with the greatest difference between consecutive low and high tides.
- 18. A pattern or grouping of stars that people imagine to represent a figure or object.
- 20. One of the different apparent shapes of the moon as seen from Earth.
- 21. The part of a shadow surrounding the darkest part.
- 23. Dark,flat areas on the moon's surface formed from huge ancient lava flows.
- 24. An imaginary line that passes through a planet's center and its north and south poles,about which the plane rotates.
- 25. eclipse The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.
Down
- 1. The darkest part of a shadow.
- 2. A loose collection of ice and dust that orbits the sun, typically in a long,narrow orbit.
- 4. The path of an object as it revolves around another object in space.
- 5. The movement of an object around another object.
- 7. The spinning motion of a planet on its axis.
- 9. The partial or total blocking of one object in space by another.
- 10. A chunk of rock or dust in space, generally smaller than an asteroid.
- 16. tide The tide with the least difference between consecutive low and high tides.
- 17. A system of organizing time that defines the beginning, length, and divisions of a year.
- 18. A large round pit caused by the impact of a meteoroid.
- 19. A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion.
- 21. 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.
- 22. of universal gravitation The scientific law that states that every object in the universe attract every other object.