chapter 20 sections 1-3 by: shannon harris. astronomical unit the average distance between the earth...
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Chapter 20Sections 1-3By: Shannon Harris
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Astronomical UnitThe average distance between
the earth and the sun.
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Terrestrial PlanetsThe name for the inner planets
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Prograde RotationThe counterclockwise spin of a
planet or moon as seen from above the planet’s.
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Retrograde RotationThe clockwise spin of a planet or
moon as seen from above planet’s.
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Gas GiantsVery large planets that don’t
have any known solid surfaces.
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Satellites Natural or artificial bodies that
revolve around larger bodies like planets.
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Phases The different appearances of the
moon due to its changing position.
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Eclipse Occurs when the shadow of one
celestial body falls on another.
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Comet A small body of ice, rock, and
cosmic dust loosely packed together.
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Asteroid Small, rocky bodies in orbit
around the sun.
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Asteroid BeltA region of the solar system
between the orbit of Mars and Jupiter.
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Meteoroid A small body moving in the solar
system that would become a meteor