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Question
On a half-moon night the angle between the moon and the sun when measured from earth is about ____________.
On a half-moon night the angle between the moon and the sun when measured from earth is about ____________.
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Solution
The correct option is C 9
At 90° angular separation from the Sun, you on the Earth see half of the Moon's illuminated (day) side and half of its night side. The phase is called a quarter phase because you can see a quarter of the Moon's entire surface (and 90 degrees is one-quarter of 360 degrees).
At 90° angular separation from the Sun, you on the Earth see half of the Moon's illuminated (day) side and half of its night side. The phase is called a quarter phase because you can see a quarter of the Moon's entire surface (and 90 degrees is one-quarter of 360 degrees).
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