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studystackscience

chapter 21

QuestionAnswer
the average distance between the Earth and the sun;approximately 150 million kilometers (symol, AU) astronomical unit
one of the highly dense planets nearest to the sun; Mercury, Venus, Mars, and Earth terrestrial planet
the counterclockwise spin of a planets or moon as seen from above the planet's North Pole rotation in the same direction as the sun's rotation prograde rotation`
the clockwise spin of a planet or moon as seen from above the planet's North Pole retograde rotation
a planet that has a deep, massive atmosphere, such as Jupiter, Saturn, Uranus, or Neptune gas giant
a natural or artificial body that revolves around a planet satellite
the change in the sunlit area of one celestial body falls on another phase
an event in which the shadow of on e celestial body falls on another eclipse
a small body of ice, rock, and cosmic dust that follows an elloptical orbit around the sun and that gives off the gas and dust in the form of a tail as it passes close to the sun comet
a small, rocky object that orbits the sun, usually in a band between the orbits of Mars and Jupiter asteroid
the region of the solar system that is between the orbits of Mars and Jupiter and in which most asteroids orbit asteroid belt
a relatively small, rocky body that travels through space meteoroid
a meteoroid that reaches the Earth's surface without burning up completely meteor
Created by: grecovictoria
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