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Phases of the Moon

Phases of the Moon. The revolution of the Moon around the Earth causes the Moon to appear to have phases. When the moon is closest to Earth, it is about 221,463 miles away. Like Earth, the moon rotates on its axis. Unlike Earth, the moon takes approximately 29 days to complete one rotation.

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Phases of the Moon

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  1. Phases of the Moon

  2. The revolution of the Moon around the Earth causes the Moon to appear to have phases. When the moon is closest to Earth, it is about 221,463 miles away. Like Earth, the moon rotates on its axis. Unlike Earth, the moon takes approximately 29 days to complete one rotation. Why does the moon have phases?

  3. Even though the moon rotates, the same side of the moon always faces the Earth. The moon does not give off its own light. It is the sun reflecting off the surface of the moon that creates light. As the moon orbits Earth, its position in the sky changes which produces the different phases of the moon we see each month. Why does the moon have phases?

  4. New Moon Waxing Crescent First Quarter or Half Moon Waxing Gibbous Full Moon Waning Gibbous Last Quarter or Half Moon Waning Crescent 8 Phases of the Moon

  5. The moon is not visible from Earth. The moon is between the Sun and the Earth. • The dark side is facing us. • This phase lasts one night. New Moon

  6. Waxing means that the bright side is increasing. The right side is the bright side. • Less than one half of the moon is illuminated. • This phase includes any visible moon from a small sliver to almost half. Waxing Crescent

  7. The entire right side of the moon is illuminated. • The moon looks like a half circle. • The illuminated side is increasing. • This phase only lasts one night. First Quarter or Half Moon

  8. Gibbous means that more than one half is visible, but it is not quite full. • This phase includes the night after the first quarter to the night before the full moon. Waxing Gibbous

  9. The moon is full and bright. It looks like a large circle. • The illuminated side is facing us. • Only happens one night per lunation. Full Moon

  10. The moon appears more than half but not quite full. • Waning means that the illuminated side is decreasing. • The left side is the bright side. Waning Gibbous

  11. Left Half of the moon is illuminated. • The illuminated side is decreasing. • This phase also only lasts for one night. Last Quarter or Half Moon

  12. Less than one half of the moon is illuminated. • The moon will continue to become smaller and smaller. Waning Crescent

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