Across
- 1. the movement of an object around another object
- 4. the study of moon, stars and other objects in space
- 6. the force of gravity on an object
- 8. a push or a pull on an object
- 10. the 2 days of the year the sun reaches its greatest distance N or S of the equator
- 11. different apparant shapes of the moon as seen from the Earth
- 12. the blocking of sunlight to Earth when moon is directly between sun and Earth
- 15. the tendency of an object to resist change in motion
- 16. a tide with the least difference between low and high tide
- 18. the force that pulls objects towards eachother
- 20. the darkest part of a shadow
- 21. the daily rise and fall of Earth's waters on its coastlines
Down
- 2. the 2 days a year on which neither hempisphere is tilted toward or away from the sun
- 3. the blocking of sunlight to the moon when Earth is directly between sun and moon
- 5. the amount of matter in an object
- 7. the partial or total blocking of one object in space by another
- 9. an imginary line that passes through Earth's center at the North and South poles
- 13. the spinning motion of a planet on its axis
- 14. a tide with the greatest difference between high and low tide
- 17. the part of the shadow surrounding the darkest part
- 19. the path of an object as it revolves around another object