8th Grade Topic 9 Lesson 2 Earth's Movement in Space Vocabulary

An imaginary line that passes through a planet’s center and its north and south poles, around which the planet rotates.

• equinox

• solstice

• axis

• rotation

the tendency of an object to resist a change in motion.

• rotation

• gravity

• inertia

• revolution

 the spinning motion of a planet on its axis.

• revolution

• rotation

• orbit

• gravity

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the scientific law that states that every object in the universe attracts every other object.

• solstice

• equinox

• gravity

• law of universal gravitation

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 the movement of an object around another object.

• revolution

• rotation

• orbit

• axis

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the attractive force between objects; the force that moves objects downhill.

• inertia

• orbit

• gravity

• revolution

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the path of an object as it revolves around another object in space.

• equinox

• solstice

• gravity

• orbit

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either of the two days of the year on which the sun reaches its greatest angular distance from the equator.

• solstice

• equinox

• law of universal gravitation

• revolution

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either of the two days of the year on which neither hemisphere is tilted toward or away from the sun.

• solstice

• equinox

• revolution

• orbit

Tags

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