When the visible portion of the Moon is getting larger, the Moon is which phase?

Prepare for the Sun-Earth-Moon System (C20) Test with engaging flashcards and multiple choice questions, each with detailed explanations and hints. Get ready to ace your exam!

Multiple Choice

When the visible portion of the Moon is getting larger, the Moon is which phase?

Explanation:
Growing illumination is waxing. When more of the Moon’s sunlit side becomes visible night after night, you’re in the waxing phases, moving from New Moon toward Full Moon through waxing crescent, first quarter, and waxing gibbous. After the Full Moon the illuminated portion starts to shrink—that’s waning—and New Moon is when it’s not visible at all. Third Quarter is part of the waning period, while New Moon is invisible. So, if the visible portion is getting larger, the Moon is waxing.

Growing illumination is waxing. When more of the Moon’s sunlit side becomes visible night after night, you’re in the waxing phases, moving from New Moon toward Full Moon through waxing crescent, first quarter, and waxing gibbous. After the Full Moon the illuminated portion starts to shrink—that’s waning—and New Moon is when it’s not visible at all. Third Quarter is part of the waning period, while New Moon is invisible. So, if the visible portion is getting larger, the Moon is waxing.

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