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Solar System

QuestionAnswer
axis The imaginary line that passes through Earth's center and the North and South poles
rotation The spinning motion of a planet around its axis
revolution The movement of one object around another object
orbit The path of an object as it revolves around another object in space
day Each 24 hour cycle of day and night
astronomy The study of the moon, stars and other objects in space
What causes day and night? Earth's rotation on its axis
Why does Earth have seasons? The Earth's axis is tilted as it moves around the sun
How does the moon move? The moon revolves around the Earth and rotates on its own axis.
What causes the different phases of the moon? The positions of the sun, moon, and Earth and how they line up.
How often does the moon go through a whole set of phases? Around once a month or each time the moon revolves around the Earth
Created by: mawharton
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