The motion of moon around the Earth, one complete orbit.

The shape of the moon as seen from Earth.

Describes a moon as seems to be getting bigger each night.

Describes a moon as seems to be getting smaller each night.

A moon that is smaller that a quarter moon, but larger than the new moon.

A moon that is larger that a quarter moon, but smaller than the new moon.

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Term	Definition
Revolution	The motion of moon around the Earth, one complete orbit.
Phase	The shape of the moon as seen from Earth.
Waxing	Describes a moon as seems to be getting bigger each night.
Waning	Describes a moon as seems to be getting smaller each night.
Crescent	A moon that is smaller that a quarter moon, but larger than the new moon.
Gibbous	A moon that is larger that a quarter moon, but smaller than the new moon.