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20 Cards in this Set
- Front
- Back
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solar eclipse
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the passing of the moon between the earth and the sun
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lunar eclipse
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the passing of the moon through the earths shadow at a full moon
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hemisphere
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half of a sphere, globe or celestial body
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inner planets
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planets that orbit closest to the sun
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outer planets
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planets that orbit farthest away from the sun
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astronomy
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the study of the universe
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theory
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a system of ideas that explain many related observations
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moon
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a body that revolves around a planet
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astroid
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a small rock or object that orbits the sun
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comet
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a small body of ice rock or cosmic dust
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meteoroid
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a relative small rock body that travels through space
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meteor
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a bright streak of light that results when an asteroid burns in the earths atmosphere
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meteorite
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a meteoroid that reaches the earths surface without burning up completely
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revolution
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the motion of a body that travels around another body in space
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orbit
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the path that a body follows as it travels around another body
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rotation
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the spin of a body on its axis
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axis
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an imaginary straight line running through the earth from pole to pole
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geocentric
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it describes something that uses the earth as a reference point
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heliocentric
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sun -- centered
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galaxy
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a collection of stars dust and gas bound together by gravity
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