Across
- 2. when the Earth, Moon & Sun are in perfect alignment
- 5. force of attraction between objects that is due to their masses
- 6. path of an object as it revolves around another object in space
- 8. all of the large and small objects that orbit the sun (2 words)
- 9. scientist provided first evidence of expanding universe (2 words)
- 10. space and all of the matter and energy in it
- 13. 5.1° (2 words)
- 14. seasons are caused by the Earth’s …
- 16. Sun and Moon gravitational forces partially cancel out, resulting in small tides (2 words)
- 17. Sun and Moon gravitational forces work together, resulting in large tides (2 words)
Down
- 1. collection of stars, gas, and dust that is held together by gravity
- 2. day when the sun crosses the equator
- 3. different apparent shapes of the moon that repeat over 29.5 days
- 4. on average, every planet’s closest planetary neighbor
- 7. day and night are caused by …
- 9. 23.5° (2 words)
- 11. day when the sun is as far north or south of the equator as possible
- 12. universe is getting bigger
- 15. years are caused by …