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10 Cards in this Set
- Front
- Back
Terrestrial planet
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one of the highly dense planets nearest to the sun; mercury, Venus, Mars and Earth
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Prograde rotation
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The counter clockwise rotation spin of a planet or moon as seen from above the planet's North Pole; rotation in the same direction as the sun's rotation
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Retrograderotation
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The clockwise spin of a planet or moon as seen from above the planet's North Pole
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Gas giant
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A planet that has a deep massive atmosphere, such as Jupiter, Saturn,Uranus or Neptune
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Satellite
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a natural or artificaial body that revolves around a planet
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Phase (astronomy definition)
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the change in the sunlit area of one clestial body as seen from another celestial body
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Eclipse
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an event in which the shadow of one celestial body falls on another
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Comet
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a sma;; body of ice, rock, and cosmic dust that follows and elliptical orbit around the sun and that gives off gas and dust in the form of a tail as it passes close to the sun
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Asteroid
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a samll rocky object that orbits the sun, usually in a band between the orbits of Mars and Jupiter
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Meteor
Meteorites Meteoroids |
- a bright streak of light that results when a meteoroid burns up in the Earth's atmosphere
-a meteoroid that reaches the Earth's surface without burning up completely -a relatively small, rocky body that travels through space |