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Sun-Earth-Moon

Movements in the System

TermDefinition
Rotation Movement of an object on its axis
Revolution Movement of an object around another object
Orbit Path an object takes around another object
Gravitational Force Force of attraction between objects of mass; larger mass = more gravitational pull
Season Yearly changes on Earth due to its axial tilt and revolution
Lunar Cycle Repeated sequence of the moon revolving around Earth
Axis The imaginary line that goes through the poles of any object
Moon Phase Changes in the appearance of the Moon as it revolves around Earth
About 24 hours The time it takes Earth to complete one full rotation
About 365 days The time it takes Earth to complete one full revolution
About 29 1/2 days The time it takes the Moon to complete one full revolution (and rotation)
23 1/2 degrees The tilt of Earth on its axis
Spring, Summer, Fall, Winter The pattern of seasonal changes from some places on Earth
Counterclockwise The direction Earth rotates and revolves
New, First Quarter, Full, Last Quarter, New Moon The cycle of phases for a lunar cycle
Created by: EThames20
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