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Ch.21 vocab


the average distance between earth and the sun astronomical unit
one of the highly dense planets nearest to the sun terrestrial planet
the counter-clockwise spin of a planet or moon prograde rotation
the clockwise spin of a planet or moon retrograde rotation
a planet with a deep massive atmosphere gas giant
a natural or artificial body that revolves around the sun satellite
a change in the sunlit area phase
the event when a body's shadow falls on another eclipse
a small body of ice, rock, and dust comet
a small rocky body that orbits the sun asteriod
a reigon between the orbits of Mars and Jupiter asteriod belt
meteroid small rocky body that travels through space
metorite a meteroid that reaches earth without burning up completely
meteor a streak of light that results when a meteroid burns up in the earth's atmosphere
Created by: cathermarybeth