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Chapter 3 The Solar System. Section 3 Outer Planets Notes 3-5. More Outer Planets. Saturn. Saturn. Sixth planet from the sun Over a half a billion km farther from the sun than Jupiter Second largest planet Average temperature = -176 °C Has 34 named satellites Has several rings.

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chapter 3 the solar system

Chapter 3The Solar System

Section 3

Outer Planets

Notes 3-5

saturn1
Saturn
  • Sixth planet from the sun
  • Over a half a billion km farther from the sun than Jupiter
  • Second largest planet
  • Average temperature = -176 °C
  • Has 34 named satellites
  • Has several rings
saturn2
Saturn
  • Rotation rate = 10 hours and 30 minutes
    • Bulges at its equator and flattens at its poles
  • Orbital Period = 29.5 years
  • Also has colored bands
    • Probably caused by the quick spinning
  • Made of 75% hydrogen and 25% helium
    • Mostly liquid metallic hydrogen
    • Has trace elements of ammonia, methane and water vapor
    • Probably has a rocky core (like Jupiter)
saturn3
Saturn
  • Differences from Jupiter
    • Less dense
      • Less dense than water; could float
    • Orbital period is much longer
    • Complex ring system
  • http://saturn.jpl.nasa.gov/home/index.cfm
uranus1
Uranus
  • Seventh planet from the sun
  • Third largest planet
  • First planet to be discovered since ancient times (1781)
  • Has 27 moons
  • 11 dark rings (makes them hard to see)
  • Orbital period = 84 years
  • Rotation rate = 17 hours
uranus2
Uranus
  • Rotates like a rolling ball
    • Axis is horizontal to its orbit
  • Visited only once in 1986
    • By Voyager 2
  • Greenish in color
    • From methane in its outermost atmosphere
    • Also has helium and hydrogen
      • But not as much as Saturn and Jupiter
uranus3
Uranus
  • Average temperature -214 °C
  • May have liquid water and methane on the interior
  • It material is more uniform through out the planet
    • No rocky core (like the book says)
    • Imagine Saturn and Jupiter without the atmosphere and liquid metallic hydrogen
neptune1
Neptune
  • Eighth planet from the sun
  • Fourth largest
    • Smaller in diameter than Uranus but bigger in mass
  • Orbital period = 164 years
  • Rotation rate = 16 hours
  • Has 13 moons
  • Has 4 rings
neptune2
Neptune
  • Named after Roman god of the sea
  • John Couch Adams and Urbain Leverrier in 1800’s predicted the location of another planet
    • Johann Galle, discovered the planet in 1846
    • Galileo actually saw it first, when studying Jupiter, but thought it was a star
  • Has only been visited by Voyager 2, in 1989
neptune3
Neptune
  • Great Dark Spot (like Jupiter’s Great Red Spot)
    • Large storm
    • Around the same size as Earth
    • 1994 it disappeared
  • Has strongest winds in the solar system
    • Reaching 2000 km/hr
  • Average surface temp. = -225 °C