Lunar Vocab Hawboldt

1. when the Moon is completely dark from Earth's perspective
4. The _____ cycle predicts the occurrence rate of eclipses (about 18 years)
5. the time it takes the Moon to go through all of its phases is called a _____ month
7. large lighter areas on the Moon that contain hills and mountains
8. when the Moon is losing brightness over successive nights
9. (the slightly darker area next tot he umbra
10. the fully dark area during an eclipse (Latin for shadow)
12. large dark areas on the Moon's surface (Latin for lake)
13. the material that is thrown out due to a meteor impact
16. this is what it is called when the Moon blocks the light from the Sun from reaching Earth
17. the type of month is based on the Moon's position relative to the stars
18. directly above an observer
19. the point in the orbit of a satellite where it is closest to the Earth
21. when the Moon is illuminated between 50% and 100%
22. The point in the orbit of a satellite where it is furthest from the Earth
23. when the Moon is fully illuminated from Earth's perspective
25. when 50% of the Moon is illuminated
26. a fissure or narrow channel on the Moon's surface
27. plural or mare (Latin word for lake)
28. when two celestial objects are close to each other in the sky

2. the light that is reflected off of the Earth that illuminates the Moon
3. the line that separates the night side from the day side
5. this is what it is called when the Earth blocks the light from the Sun from reaching the Moon
6. directly below an observer
11. long lines scored in the Moon's surface that radiate from impact craters
14. when the Moon is gaining brightness over successive nights
15. how much light gets reflected by an object
16. any object that orbits another object
20. when two celestial objects are on opposite sides of the sky from each other
24. when the Moon is illuminated between 0% and 50%