Phases of the Moon

The video explains the phases of the moon, which are the apparent changes in the moon's shape as seen from Earth. These phases include the full moon, waning gibbous, last quarter, waning crescent, and new moon. The phases are caused by the moon's orbit around Earth, taking about 28 days to complete. As the moon orbits, sunlight reflects off its surface, creating the visible phases. The video clarifies that the moon does not change shape; rather, its position relative to Earth and the Sun causes the phases.

Describe what happens when the Earth is directly between the Sun and the Moon.

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Explain why the moon appears to change shape over the course of a month.

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