Earth-Sun-Moon System

3. The darkest part of a shadow.
4. The amount of matter in an object.
8. A push or a pull.
9. Tide The tide with the greatest difference between consecutive low and high tides.
10. The movement of an object around another object.
12. The tendency to resist the change in motion.
13. The season that occurs when the hemisphere you live in is pointed toward the sun.
15. Tide The tide with the least difference between consecutive low and high tides.
17. The moon is past 1st or 3rd quarter phase and majority of the moon is illuminated, but not fully.
18. The imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates.
19. When the moon is past new moon and moving toward full moon.
20. Half of the Earth, divided into the Northern and Southern parts.
22. When the moon is past full moon and moving toward new moon.
24. The attractive force between objects, the force that moves objects downhill.

1. The imaginary line around the middle of the Earth that divides it into different hemispheres.
2. The moon is past either a new moon or full moon, and only a sliver of moon is seen.
5. Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator.
6. The partial or total blocking of one object in space by another.
7. An oval shape, which may be elongated or nearly circular,; the shape of the planets' orbit.
11. Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun.
13. The season that begins in March in the Northern Hemisphere and September in the Southern Hemisphere.
14. The spinning motion of a planet on its axis.
16. The season that has the shortest daylight hours, usually accompanied with cooler weather.
21. The part of the shadow that surrounds the darkest part.
23. Temperatures begin to gradually decrease, days are becoming shorter, and usually accompanied with leaves changing.