Earth's Rotation & Orbit

Rotate

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• To spin around an axis.

Axis

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• An imaginary line that passes through the center of a celestial body, around which that celestial body rotates.

Orbit

• A regular path an object in space takes around another object like a star, a planet or a moon.
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• Pie de imagen: The Earth orbits around the sun. It takes Earth 365 days to complete its orbit.

Lunar Phases

• How the moon looks from Earth as it orbits Earth.
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Waxing

• The moon appears to be getting bigger.
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Waning

• The moon appears to be getting smaller.
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