Across
- 2. when you can only see the unlit side of the moon
- 4. during this season in the northern hemisphere the earth's distance from the sun is the shortest
- 6. made of gas and have larger masses
- 7. layers of rock that are formed
- 9. occurs when the earth blocks light from reaching the moon
- 11. made of metal and rocks with smaller masses
- 12. are remains or impressions of ancient organisms preserved in rocks
- 15. the force of attraction between any two objects with mass
- 16. used to define and identify geologic periods
Down
- 1. this occurs when particles of rock erode and eventually settle in
- 3. are the regular rise and fall of ocean water caused mainly by the pull of Moon's gravity
- 5. occurs when the moon blocks the light from the sun
- 8. means the lighting of the moon is increasing
- 10. to spin on an axis
- 13. during this season in the northern hemisphere the earth's distance from the sun is the longest
- 14. means moving around another object