Which term refers to the shape of the illuminated portion of the Moon as seen from Earth?

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Multiple Choice

Which term refers to the shape of the illuminated portion of the Moon as seen from Earth?

Explanation:
The illuminated portion of the Moon as seen from Earth changes over time as the Moon orbits and the Sun’s light falls on it from different angles. That changing appearance is called the Moon phase, which describes the overall shape we observe through the night sky. A Full Moon is just one specific phase when the entire near side is lit; a Quarter Moon is another specific phase when half of the near side is lit. The word Moon refers to the object itself, not its illuminated shape. So the best term for describing the shape of the lit portion across the cycle is Moon phase.

The illuminated portion of the Moon as seen from Earth changes over time as the Moon orbits and the Sun’s light falls on it from different angles. That changing appearance is called the Moon phase, which describes the overall shape we observe through the night sky. A Full Moon is just one specific phase when the entire near side is lit; a Quarter Moon is another specific phase when half of the near side is lit. The word Moon refers to the object itself, not its illuminated shape. So the best term for describing the shape of the lit portion across the cycle is Moon phase.

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