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Chapter 19

6th grade

TermDefinition
axis an imaginary line that passes through Earth's center about which it rotates
rotation the spinning motion of a planet on its axis
revolution the movement of an object around another object
orbit the path an object takes as it revolves around another object in space
solstice the two days of the year on which the sun reaches its greatest distance north or south of the equator
equinox the two days of the year on which neither hemisphere is tilted toward or away from the sun
solar eclipse the blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth
lunar eclipse the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
umbra the darkest part of a shadow
penumbra the part of a shadow surrounding the darkest part
maria dark, flat areas on the moon's surface formed from huge ancient lava flows
crater a large round pit caused by the impact of a meteorite
Created by: Science4u
Popular Earth Science sets

 

 



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