Phases Of The Moon
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1Key
Phys 102: Astronomy
Name ________________
P
M
HASES OF THE
OON
The inner circle shows the moon in its orbit, the outer circle shows how each phase appears as seen
from the earth
st
1
quarter
waxing
waxing
gibbous
crescent
Light from the Sun
90°
eastern
6pm
elongations
new
full
mdnt
noon
180°
0°
6am
western
elongations
90°
waning
waning
crescent
Light from the Sun
gibbous
rd
3
Complete the following table for the phases of the moon, assuming a 12-hour “moon day”
*
PHASE
ELONGATION
RISING TIME
SETTING TIME
TRANSIT TIME
st
1
Quarter
90° E
Noon
6 pm
Midnight
~135° W
3 am
Waning Gibbous
9 pm
9 am
New
0°
6 am
noon
6 pm
Waning Crescent
~45° W
3 am
9 am
3 pm
rd
3
Quarter
90° W
M
6 am
Noon
IDNIGHT
Waxing Gibbous
135° E
3 pm
9 pm
3 am
Full
180°
6 pm
Midnight
6 am
Waxing Crescent
45° E
9 am
3 pm
9 pm
*
The "transit time" is the time when the object is on the observer's meridian
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