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Topic 11: Lesson 2 Earth's Movement in Space

An imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates. axis
The spinning motion of a planet on its axis. rotation
The movement of an object around another object. revolution
The path of an object as it revolves around another object in space. orbit
Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator. solstice
Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun. equinox
The attractive force between objects; the force that moves objects downhill. gravity
The scientific law that states that every object in the universe attracts every other object. law of universal gravitation
The tendency of an object to resist a change in motion. inertia
To give a possible but not yet proven explanation for something. hypothesize
Created by: ScienceWTRMS