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23.5 degrees Earth's tilt
Due to the tilt of earth as it travels around the sun, we have spring, summer, fall, and winter. Seasons
An imaginary line going from the north pole to the south pole. The earth spins on this line. Axis of Rotation
The circling of one object around another object in space. A planet revolves around the sun. A moon revolves around a planet. Similar to orbit. Revolution
The bouncing of light off of an object. The moon appears to shine because it reflects the sun's light. Reflection
Full moon, First quarter, Half moon, Last quarter Phases of the moon
The path that a planet travels as it goes around the sun. Or a moon traveling around its planet. Orbit
When the sun shines on the whole moon. Full Moon
Only the right side of the moon has light on it. First quarter
When only the left side of the moon has light on it. Last quarter
When a planet (or moon) turns around or spins on its axis one full time. Revolve
When equal parts of the moon are lighted and dark. Half moon
Created by: sjallsop