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Transcript of Gas Giants Jupiter, Saturn, Uranus, & Neptune Large, gaseous planets with small solid cores of metal...
![Page 1: Gas Giants Jupiter, Saturn, Uranus, & Neptune Large, gaseous planets with small solid cores of metal & rock. Made mostly of Hydrogen & Helium – under great.](https://reader035.fdocuments.in/reader035/viewer/2022062620/551a38ee5503463e778b4c14/html5/thumbnails/1.jpg)
Gas Giants• Jupiter, Saturn, Uranus, & Neptune• Large, “gaseous” planets with small
solid cores of metal & rock. • Made mostly of Hydrogen & Helium –
under great pressures H & He existing as liquids w/in planet
CH 25.4 Outer Planets
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5.2 AUs from sun
Orbit time (Rev.) = 12 yrs
Rotation = 9.8 hours
GASEOUS, LARGEST & MOST MASSIVE PLANET (mass = 318 x Earth)
Atmosphere = Hydrogen, Helium
Temps = -144C (but hot core)
Lg. Magnetosphere – currents of metallic liquid Hydrogen
Features:
Cloud Bands, Giant Red Spot storm system, single faint ring
moons: 50+
Exploration: Voyager & Galileo Spacecraft Flybyshttp://www.youtube.com/watch?v=92PdqOA7VEY&feature=relmfu
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Io - volcanic
Ganymede – icy (Large)
Callisto - icy
Europa – icy (salt water ocean underneath)
The History Channel’s “The Universe – Jupiter” http://www.youtube.com/watch?v=rLeKE8hfP8M
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Most volcanically active location in the solar system.
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Europa may have life under its salt water ocean under its frozen surface.
http://www.youtube.com/watch?v=rVDE14tFyEM&feature=PlayList&p=10F85C2BC16A885E&index=0http://www.youtube.com/user/Knowledge2Truth#p/c/28A94D2A4AEC778C/15/-tsamka8gHU
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9.5 AUs from sun
Orbit time (Rev) = 29.5 yrs
Rotation = 10.67 hrs
GASEOUS- 2nd Largest, Least dense (could float)
Atmosphere: Hydrogen, Helium, +
(Rains helium)
Temps: -176C (hot core)
Features: Large ring system (icy rock/dust) Cloud bands
Moons: 30+
http://www.youtube.com/watch?v=4D8Y9J3aL3I
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Titan: Saturn’s Moon
• Cassini-Huygen’s Mission recently explored Titan with a probe
• Cassini continues to explore Saturn
• Has an THICK ATMOSPHERE
• Nitrogen & Methane
• Liquid lakes of ethane & methane.
The Universe: Saturn 1/3http://www.youtube.com/watch?v=GfDQeZxPsgw
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19.2 AUs
Orbit Time (Rev): 84 years
Rotation: 17.24 hrs.
GASEOUS & RINGS
Atmosphere: Hydrogen, HeliumMethane, Ammonia
Tilted on side 90 degrees and rotates backwards (retrograde)
Temps: - 215 C (hot core)
moon: 20+The History Chanel’s Outer Planets: http://www.youtube.com/watch?v=YIrhTXRROgo
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30 AUs
Orbit time (Rev) = 165 yrs.
Rotation = 17.24 hrs.• GASEOUS & RINGS
• Atmosphere: Methane, Hydrogen, Ammonia
• Temps: -355 F
• FeaturesDark Spot storm system (vanished 1994)
• Clouds of Methane Ice Crystals
Moons: 8+ (Triton is largest)
Windiest Planet (1200 mph winds)
http://www.youtube.com/watch?v=woBY6CiIfTg&feature=PlayList&p=DD2B509749D92C27&playnext=1&playnext_from=PL&index=13http://www.youtube.com/watch?v=ZgKpinHLY-Q
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Common Features of Outer Planets
• Large in size• Gaseous surfaces of H & He• Many Moons• Rings• Cold temperatures• Long revolutions
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40 AUs
Trace Atmosphere (methane)
Temps. - 223 C/ -400F
SOLID – icy rock w/ frozen methane
DenseMoon: Charon (almost same size; they chase each other
Eccentric &Tilted Orbit (17 degrees)
Dwarf Planet
Probably a Kuiper Belt Object
New Horizons Spacecraft – left in 2006; will arrive in 2015
http://www.youtube.com/watch?v=ZgKpinHLY-QDiscovery: http://www.youtube.com/watch?v=u1RU6P-fUr4
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Reasons Pluto was Reclassified
1. Too small & solid(Outer planets are large & gaseous)
2. No rings
3. Only 1 moon (and it chases it).
4. Orbit is very elliptical & tilted
5. More in common with K.B.O.s
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Kuiper Belt
Short term comets are also in K. Belt (~ 200 yr.orbits)
http://www.solarviews.com/eng/kuiper.htm
K.B.O.sRound icy rock bodies like Pluto continue to be found & classified.
Starts at Neptune’s orbit and extends for 30 – 50 AU out.
In the ecliptic plane w. planets
Sedna
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http://discovermagazine.com/2004/nov/cover/outer-oort.jpg
www.astro.rug.nl
library.thinkquest.org
The Universe: The Outer Planets (& Pluto & KBO)http://www.youtube.com/watch?v=osWm8QygoH4
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Dirty Snowballs with a rocky core
Vapor tail forms as it approaches sun (Solar wind evaporates frozen gases)
• Tail faces away from sun
• Short Range – 200 yrs (K.Belt)
• Long Range – millions or years (Oort Cloud)
Found in Kuiper Belt(region that starts @ Neptune’s orbit and extends past Pluto & is in the ECLIPITC PLANE) & Oort Cloud (SPHERE OF Comets surrounding S. system as a shell)
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http://abyss.uoregon.edu/~js/ast121/lectures/lec24.html
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Check Up
1. List 3 reasons why Pluto is an “odd-ball”
2. What is Pluto now considered?
3. What 2 places can you find comets?
4. Describe a KBO – where do you find them?
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• Birth of the Solar System (National Geographic) http://www.youtube.com/watch?v=B1AXbpYndGc• Planets form (Condensation Temps): http://www.youtube.com/watch?v=p5nCMCZSVxg
• • Massive Solar Storms (National Geographic) http://www.youtube.com/watch?v=DU4hpsistDk&feature=relmfu
• Massive Solar Storms http://www.youtube.com/watch?v=DU4hpsistDk&feature=list_related&playnext=1&list=SL