vocabulary. our solar system includes the sun, the planets and many smaller objects
TRANSCRIPT
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SOLAR SYSTEMvocabulary
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Solar System
Our solar system includes the sun, the planets and many smaller objects.
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The inner planets The inner
planets are the four planets nearest to the sun.
Mercury Venus Earth Mars
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The outer planets The outer
planets are the four planets farthest from the sun.
Jupiter Saturn Uranus Neptune
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satellites
A satellite is a smaller body that revolves around a larger body.
The moon is a natural satellite of the Earth.
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Comets
A comet is a body of ice, rock and dust that was formed in the cold outer solar system and orbits the sun.
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A comet’s orbital path
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Asteroids
Asteroids are small rocky bodies that orbit the sun, found mainly in the asteroid belt between Mars and Jupiter.
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Asteroid Belt
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Meteoroids A meteoroid is
a rocky body smaller than an asteroid. Meteors burn up in Earth’s atmosphere. Meteorites do not burn up entirely and strike the ground.
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Kuiper belt
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Oort Cloud
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SOLAR SYSTEMRelative distances
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Astronomical Unit (AU) A U = the
average distance of Earth from the sun
AU=149,600,000 kilometers
AU=92,957,000 miles
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Distances from the sun in AU’s Sun 0.0 AU Mercury 0.4 AU Venus 0.7 AU Earth 1.0 AU Mars 1.5 AU Asteroid Belt 2.8
AU Jupiter 5.2 AU Saturn 9.6 AU Uranus 19.2 AU Neptune 30.0 AU
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Distances if 1AU=10cm• Sun =0 cm• Mercury =4 cm• Venus =7 cm• Earth =10 cm• Mars =15 cm• Asteroid Belt =28
cm• Jupiter =52 cm• Saturn =96 cm• Uranus =192 cm• Neptune =300 cm