What Causes the Moon Phases?

Answer

The Moon phases are caused by the orbit of the Moon around Earth. As the Moon orbits at times the Moon is fully visible or part visible to the Sun. The areas of the Moon that are visible by the Sun are hit with sunlight. Therefore outlining the Moon in the sky by different shapes or a full Moon.
1 Additional Answer
Ask.com Answer for: what causes the moon phases
The revolution of the Moon around the Earth causes the Moon to appear to change shape in the sky.
Moon phases are the result of the Moon's own shadow -- like Earth, only one half of the body is lit at a time. More >>
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