Astronomy Quiz 3
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Where does Jupiter's extra energy come from?
- Radioactive elements in its core
- From an overall concentration amounting to less than 10cm per year
How is Pluto measured?
By the blurring of the Earth's atmosphere
What 3 factors affect brightness?
- Distance from sun
What does Uranus and Neptine's interior look like?
What is differential rotation?
Where the speeds and direction of the clouds vary with latitude
How did we discover Jupiter's interior?
Why is Neptune blue?
Methane absorbs red light allowing only blue light to reach us
Jupiter and Saturn are almost entirely what compounds?
Why is Saturn less dense?
It's smaller and less compressed by it's own gravity
What year was Uranus discovered?
What year was Neptune discovered and how?
- From the gravational pull of Uranus
What compunds do Uranus and Neptune contain?
What characteristic do all Jovian planets share?
Small solid cores of denser material at their centers
Circular electric charges produce these in the interiors of planets..
What are Jupiter's 4 moons?
What are Saturn's 2 moons?
What is Uranus' moon?
Ganymede and Callisto are less dense because of what?
- They incorporate more ice
- There surfaces are older and cratered
What photographed the surface of Titan?
The Hyugen's Probe
The patchworksurface on Miranda reveals what?
How does Triton orbit Neptune?
What is ice geology?
- Volcanoes and tectonics driven by water, not lava
- Neptune's tidal flexure of Triton
Describe the rings of :
- Jupiter - diffuse and dusty
- Saturn - rich
- Uranus - thin dark bands
- Neptune - incomplete arcs
What causes ring structure?
By shephard moonlets embedded in the rings and orbital resonances with larger moons outside the rings
Tidal forces keep pulling particles apart where?
The Roche Limit
Which of Jupiter's moons contains frozen icebergs?
How flattened a planet is by it's centrifical force is...
What element can you find on Io?
How fast does Jupiter rotate?
Every 10 hours
Which element consumes 90% of Titan's atmosphere?
How was the Great Red Spot formed?
By heat welling upward from the inside of Jupiter
Name the most abundant elements from greatest to least.
The internal heating on Jupiter is due to ________?
Resonant tidal fixture
The measure of how flat the outer solar system is....
What are early theories of the Lunar Origin?
- The moon and Earth were born together
- The moon was the Earth's daughter
- They were born separate but encountered each other
Jupiter's dark reddish bands are _______and it's light-colored bands are _______.
What are 2 heat sources for the outer terrestial planets?
- The sun
- Heat trapped in their interiors
What would you like to do?
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