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Vocabulary flashcards covering astronomical motions, including rotation, revolution, orbits, and planetary cycles.
Rotation
The spinning of a sphere on an axis.
Revolution
A circular journey by one object around another.
Orbit
The path an object makes as it revolves or rotates around another object.
Axis
An imaginary line going through an object that it rotates on.
Day
The period of time corresponding to one complete rotation of the Earth around its axis.
Year
The period of time corresponding to one complete revolution of the Earth around the sun.
Earth's Motion Around the Sun
The Earth revolves around the sun.
Moon's Motion Around the Earth
The moon revolves around the Earth.