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Gas Giants Jupiter, Saturn, Uranus, & Neptune

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Presentation on theme: "Gas Giants Jupiter, Saturn, Uranus, & Neptune"— Presentation transcript:

1 Gas Giants Jupiter, Saturn, Uranus, & Neptune
CH 25.4 Outer Planets 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

2 Jupiter 5.2 AUs from sun Orbit time (Rev.) = 12 yrs
Rotation = 9.8 hours Jupiter 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 Flybys

3 Gallilean Moons Io - volcanic Ganymede – icy (Large) Callisto - icy
Europa – icy (salt water ocean underneath) The History Channel’s “The Universe – Jupiter”

4 Io Most volcanically active location in the solar system.

5 Ganymede Callisto Europa
Europa may have life under its salt water ocean under its frozen surface.

6 Saturn GASEOUS- 2nd Largest, Least dense (could float) Atmosphere: Hydrogen, Helium, + (Rains helium) Temps: -176C (hot core) Moons: 30+ 9.5 AUs from sun Orbit time (Rev) = 29.5 yrs Rotation = hrs Features: Large ring system (icy rock/dust) Cloud bands

7 Titan: Saturn’s Moon Has an THICK ATMOSPHERE Nitrogen & Methane
Liquid lakes of ethane & methane. Cassini-Huygen’s Mission recently explored Titan with a probe Cassini continues to explore Saturn The Universe: Saturn 1/3

8 Orbit Time (Rev): 84 years
Uranus 19.2 AUs Orbit Time (Rev): 84 years Rotation: hrs. GASEOUS & RINGS Atmosphere: Hydrogen, Helium Methane, Ammonia Tilted on side 90 degrees and rotates backwards (retrograde) Temps: C (hot core) moon: 20+ The History Chanel’s Outer Planets:

9 Neptune 30 AUs Orbit time (Rev) = 165 yrs. Rotation = 17.24 hrs.
GASEOUS & RINGS Atmosphere: Methane, Hydrogen, Ammonia Temps: F Features Dark Spot storm system (vanished 1994) Clouds of Methane Ice Crystals Moons: 8+ (Triton is largest) Windiest Planet (1200 mph winds)

10 Common Features of Outer Planets
Large in size Gaseous surfaces of H & He Many Moons Rings Cold temperatures Long revolutions

11 Pluto Dwarf Planet Probably a Kuiper Belt Object 40 AUs
Trace Atmosphere (methane) Temps C/ -400F SOLID – icy rock w/ frozen methane Dense Moon: Charon (almost same size; they chase each other Eccentric &Tilted Orbit (17 degrees) New Horizons Spacecraft – left in 2006; will arrive in 2015 Discovery:

12 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

13 Kuiper Belt K.B.O.s Round 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 Short term comets are also in K. Belt (~ 200 yr.orbits)

14 The Universe: The Outer Planets (& Pluto & KBO)
The Universe: The Outer Planets (& Pluto & KBO)

15 Comets Found in Kuiper Belt (region that Neptune’s orbit and extends past Pluto & is in the ECLIPITC PLANE) & Oort Cloud (SPHERE OF Comets surrounding S. system as a shell) 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)


17 Check Up List 3 reasons why Pluto is an “odd-ball”
What is Pluto now considered? What 2 places can you find comets? Describe a KBO – where do you find them?

18 Birth of the Solar System (National Geographic) Planets form (Condensation Temps): Massive Solar Storms (National Geographic) Massive Solar Storms

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