Lunar Phase Simulator
Lunar Phase Simulator – Assessment Questions
BIN 1: Identify the eight phases of the moon from a picture
The moon depicted here is what phase. [Randomize over 6 phases – exclude full and new]
a) waxing crescent
b) first quarter
c) waxing gibbous
d) waning gibbous
e) third quarter
f) waning crescent
The moon depicted here is what phase. [Randomize over 6 phases – exclude full and new]
a) waxing crescent
b) first quarter
c) waxing gibbous
d) waning gibbous
e) third quarter
f) waning crescent
BIN 2: Describe the phase verbally from the name of a phase
If a moon is between 50% and 100% illuminated it is a…
a) crescent moon.
b) gibbous moon.
c) new moon.
d) full moon.
If a moon is between 0% and 50% illuminated it is a…
a) crescent moon.
b) gibbous moon.
c) new moon.
d) full moon.
If the moon is illuminated on the [right/left]-hand side it is…
a) waxing
b) waning
BIN 3: Identify earth-sun-moon geometry [2 questions]
During a [new/full] moon what percent of the moon’s entire surface (irrespective of how much we can see) is illuminated by the sun?
a) 0%
b) 25%
c) 50%
d) 75%
e) 100%
During the [first/third] quarter, how much of the face of the moon that we see is illuminated by the sun?
a) 0%
b) 25%
c) 50%
d) 75%
e) 100%
[pic]
What is the phase of the moon depicted above? [randomize over the four selections below]
a) new
b) first quarter
c) third quarter
d) full
[pic]
What is the phase of the moon depicted above? [randomize over they four selections below]
a) [pic]
b) [pic]
c) [pic]
d) [pic]
BIN 4: Give the phase or time of rising/meridian/setting from the other
What time of day is the [full, new, first quarter, third quarter] moon highest?
a) 12 AM
b) 6 AM
c) 12 PM
d) 6 PM
If the moon is at its highest point at 12 AM…
a) it rose at about 6 AM and will set at about 6 PM.
b) it rose at about 6 PM and will at about 6 AM.
c) it did not rise earlier, it was always in the observer’s sky that day.
d) it rose earlier at 12 PM and will set the following 12 PM.
It is [9 AM, 3 AM, 9 PM, 3 PM] and an observer sees the moon at its highest point in the sky, what phase moon is being observed?
a) waning crescent
b) waxing crescent
c) waning gibbous
d) waxing gibbous
BIN 5: Basic Skills – Time of Day, Counter-clockwise, Phase-observer independence [2 questions]
The time of day depicted in the figure shown here is [randomize with a version of the sun at the 4 times before]
a) 12 AM
b) 6 AM
c) 12 PM
d) 6 PM
Is the moon currently visible to the observer? [Randomize over waning and waxing crescent]
a) yes
b) no
If it is noon and a new moon for a particular observer a second observer on the opposite of the earth
a) will see a full moon.
b) will see a new moon.
c) won’t see any moon in the sky at all.
[pic]
When viewed from above the earth’s North Pole, which of the following is a correct time ordering?
a) A, B, C, D
b) A, C, B, D
c) D, C, B, A
d) C, A, D, B
[pic]
When viewed from above the earth’s North Pole, which of the following is a correct time ordering?
a) B, C, D, A
b) C, B, D, A
c) D, A, B, C
d) A, D, C, B
BIN 6: Estimate the time interval between certain phases. [2 Questions]
Which of the following best estimate the time period between new moon and [new moon/first quarter]?
a) 7 days
b) 14 days
c) 28 days
d) 30 days
During the course of an evening…
a) the moon basically stays at the same phase.
b) the moon will go through 2 phases.
c) the moon will go through 3 phases.
d) the moon will go through all 8 phases.
[pic][pic][pic]
Approximately how much time has elapsed between moon 1 and moon 2 in the figure above? [randomize over the 3 pictures above]
a) 3 hours
b) 6 hours
c) 1 day
d) 4 days
e) 7 days
f) 14 days
[pic][pic]
Approximately how much time has elapsed between moon 1 and moon 2 in the figure above? [randomize over left/right picture]
a) 3 hours
b) 6 hours
c) 1 day
d) 4 days
e) 7 days
f) 14 days
[pic]
Relative to a new moon at noon, what [was/will be] the moon’s position [1 day earlier / 3 days earlier / 1 day hence, 3 days hence]?
a) A
b) B
c) C
d) D
e) E
[pic]
Relative to a full moon at midnight, what [was/will be] the moon’s position [at 9 PM, 11 PM, 1 AM, 3 AM]?
a) A
b) B
c) C
d) D
e) E
BIN 7: Eclipses and the Dark Side
Over the course of a month, about how much of the moon’s surface can be photographed?
a) 25%
b) 50%
c) 75%
d) 100%
For a [solar/lunar] eclipse (the [sun/moon] is obscured from view), which phase is necessary?
a) new moon
b) first quarter
c) full moon
d) third quarter
What kind of eclipse is possible during the [first quarter,third quarter, full, new] moon phase?
a) lunar
b) solar
c) no eclipse possible
The “dark side” of the moon is…
a) always dark because it always faces away from the sun.
b) is fully illuminated during a new moon.
c) is a popular misconception – 100% of the moon’s surface is visible from earth.
The “dark side” of the moon arises because…
a) it is always dark, never being illuminated by the sun.
b) of a popular misconception that we can see only about 50% of the moon’s surface from earth.
c) the moon rotates once in the time it takes the moon to make one (sidereal) revolution.
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