Vocab Project

1. a push or pull on an object
4. the measure of force of gravity on an object
6. every object in the universe attracts every other object
10. system of organized time that defines the beginning, length, and divisions of a year
11. the partial or total blocking of an object
13. either of the two days of the year on which the sun reaches its greatest distance north or south of the equator
14. darkest part of the moon’s shadow
15. the force that keeps everything down
16. either of the two days of the year on which neither hemisphere is tilted toward or away from the sun
19. chunks of rock or dust from space
20. dark flat areas “seas”
21. the amount of matter in an object
22. move in a circle around the axis

2. the action of rotating around an axis or center
3. large round pits caused by meteorites
5. the different shapes of the moon you see from Earth
6. occurs at a full moon when Earth is directly between the moon and the sun.
7. an object at rest will stay at rest and an object in motion tends to stay in motion unless a force acts upon it
8. an imaginary line about which a body rotates
9. the curved path of a celestial object or spacecraft around a star, planet, or moon
12. largest part of the moon’s shadow
17. the tendency of an object to resist a change in motion
18. the partial or total blocking of one object in space by another