How many days does it take for the Moon to go from full moon to new moon?
About 14.5 days.
How long does it take the Moon to complete one full cycle of phases?
About 29.5 days (a lunar month).
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How does the Moon’s orbit affect the phases we see from Earth?
As the Moon orbits Earth, we see different angles of its sunlit half, creating the phases.
What causes the phases of the Moon?
The Moon's phases are caused by its position relative to Earth and the Sun, changing how much of the lit side we see from Earth.
If the Moon is shrinking and lit on the left, what phase is it in?
Waning.
What is the phase of the Moon when it is completely dark?
New Moon
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Which phase comes directly after a new moon?
Waxing Crescent.
What are the names of the four main Moon phases?
New Moon, First Quarter, Full Moon, Last Quarter.
How often does a full moon occur?
About once every 29.5 days.
What is the phase of the Moon when it is half lit on the right side?
First Quarter
During which phase is the Moon fully lit from Earth’s perspective?
Full Moon
Why don’t we have a lunar eclipse every full moon?
Because the Moon’s orbit is tilted, so it usually passes above or below Earth's shadow.
Where is the Moon located during a full moon (in relation to Earth and Sun)?
The Moon is on the opposite side of Earth from the Sun.
What is a lunar cycle, and how long is it?
A lunar cycle is the full set of Moon phases; it lasts about 29.5 days.
What is the phase called when the Moon is between Earth and the Sun?
New Moon
Why does the Moon appear to change shape in the sky?
Because we see different portions of the Moon's sunlit half as it orbits Earth.
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