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23 Cards in this Set
- Front
- Back
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to spin around
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rotate
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causes day and night
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rotate
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takes 24 hours
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rotate
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imaginary line that Earth spins around
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axis
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to move in a nearly circular path around something else
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revolve
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to move in a nearly circular path around something else
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revolve
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takes Earth one year
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revolve
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the path a revolving object moves along
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orbit
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shaped like an ellipse
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orbit
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an object that moves in orbit around another, larger object
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satellite
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the moon is the only one for Earth
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satellite
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hollow areas on the moon's surface
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craters
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caused by chunks of rocks crashing into the moon
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craters
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the different shapes the moon appears to take as it travels around the Earth
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moon phases
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takes about 29 days for the moon to show all
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moon phases
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a scientist who studies the planets, stars, and other celestial objects in order to understand the universe
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astronomer
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a tool used by astronomers to make objects appear larger
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telescope
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a hot glowing ball of gases that gives off energy
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star
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our sun is a medium-sized one
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star
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a satellite of the sun
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planet
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a satellite of the sun
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planet
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8 of these revolve around our sun
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planet
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the sun and all the other objects that orbit around it
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solar system
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