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Unit 4: outer planet

Astronomy- part B

QuestionAnswer
Dwarf Planets Orbit the sun, roundish shape, not a moon and have NOT completely cleared their orbital path.
Eris Dwarf planet in Kuiper belt, slightly larger than Pluto.
Great dark spot massive storm on Neptune, that is larger than Earth, winds 750 m/hr, rotated cournet-clockwise
Kuiper Belt Region of space beyond Neptune, similiar to asteroid belt. Where dwarf planets like Eris and Pluto are found.
Neptune 8th planet from Sun; discovered through math! 164 earth years/1 year; intersects Pluto; 28% tilt, has seasons; differential rotation; strong latitude winds, blue due to methane; has rings; 13 moons
Pluto a drawf planet that wasclassified as planet from 1930-2006, in Kuiper belt region, has retrograde otation
retrograde orbit when an object orbits the opposite way the planet is moving. (Most planets orbit coutner clock-wise so retrograde would be clockwise). Trition, Neptune's moon, has a retrograde orbit
retrograde rotation when a celestial body spins (rotates) in the opposite direction it orbits. Uranus is an example (Venus and Pluto too)
Triton Largest of Netptune's moons, geysers emitting N; crust- frozen N, mantle- water/ice, rocky core, retrograde orbit,
Uranus First planet discovered by telescope; retrograde rotation; 98 degree tilt!; 84 earth years/1 year (long seasons); blue-green due to methane; 27 moons named after Shakespear. ; atmosphere H and He; has 13 rings
ice giants Name for Urnaus and Neptune due to their icy composition, mostly water, ammonia and methane; 3 layers- rocky core, liquid water or icy mantle, liquid hydrogen
Created by: aguy14
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