Moon Phases Vocab

3. describes phases following a new moon, as more of the moon's lighted side becomes visible
4. a tide just after a NEW or FULL moon, when there is the greatest difference between high and low water levels
6. imaginary line that runs from North Pole to South Pole
11. the moon is 3/4 of its way around the Earth. You can see the left half of the side facing Earth lit up
13. the larger, lighter part of a shadow where light is partially blocked during an eclipse
15. the partial or total blocking of one object in space by another
18. moon phases when the entire side facing Earth is illuminated
19. moon phase in which more than half of the moon appears to be illuminated
20. time required for Earth to revolve around the sun
21. to spin on an axis

1. an eclipse in which the moon appears darkened as it passes into the Earth's shadow
2. the moon is quarter of the way around the Earth. You can see the right half of the side facing Earth lit up
4. dates during the Earth's revolution around the sun when the North pole/South pole are tilted directly at the sun. Longest/shortest days of the year depending on which hemisphere is tilting towards/away
5. to move around another object
7. time required for Earth to rotate once on its axis
8. moon phase that occurs when the moon is between Earth and the Sun; the moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth
9. becoming less bright, intense, or strong
10. the periodic rise and fall of the level of water in the ocean
12. a tide just after the FIRST or LAST QUARTER moons, when there is the least difference between high and low water levels
14. dates during the Earth's revolution around the sun when day/night are approximately equal (12 hours each). Start of spring/fall
16. the curved sickle shape of the waxing or waning moon
17. The smaller, darkest part of a shadow during an eclipse