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Which statement about planetary rings is not true?


A) Saturn's rings formed along with its moons 4.6 billion years ago.
B) All four jovian planets have rings.
C) Individual ring particles orbit their planet in accord with Kepler's laws, so that particles closer in orbit faster than particles farther out.
D) Rings are always located closer to a planet's surface than any large moons.

E) All of the above
F) A) and D)

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Which of the jovian planets have rings?


A) Jupiter
B) Saturn
C) Uranus
D) Neptune
E) all of the above

F) A) and E)
G) C) and D)

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Use these choices for the following questions. -Which of the above applies to Titan?


A) the most volcanically active body in the solar system
B) thought to have a deep, subsurface ocean of liquid water
C) probably a captured Kuiper Belt object
D) the target of the Huygens probe, which landed on its surface.
E) the largest moon in the solar system

F) B) and E)
G) All of the above

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The mass of Saturn can be determined by applying Kepler's 3สณแตˆ Law to the motion of a single ice particle in its rings.

A) True
B) False

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Which moon has a thick atmosphere made mostly of nitrogen?


A) Titan
B) Triton
C) Ganymede
D) Europa

E) B) and D)
F) None of the above

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How many more times is the atmospheric pressure in Jupiter's core greater than the atmospheric pressure at Earth's surface?


A) 10 thousand
B) 100 thousand
C) 1 million
D) 10 million
E) 100 million

F) None of the above
G) C) and E)

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Which jovian planet should have the most extreme seasonal changes?


A) Uranus
B) Jupiter
C) Saturn
D) Neptune

E) A) and B)
F) None of the above

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Use these choices for the following questions. -Which of the above applies to Triton?


A) the most volcanically active body in the solar system
B) thought to have a deep, subsurface ocean of liquid water
C) probably a captured Kuiper Belt object
D) the target of the Huygens probe, which landed on its surface.
E) the largest moon in the solar system

F) A) and E)
G) A) and C)

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Which statement about Saturn's rings is not true?


A) The rings must look much the same today as they did shortly after Saturn formed.
B) The large gap known as the Cassini Division is shaped by an orbital resonance with the moon Mimas, which orbits well outside the rings.
C) Some features of the rings are shaped by small moons that actually orbit within the ring system.
D) The rings are so thin that they essentially disappear from view when seen edge-on.

E) A) and B)
F) A) and C)

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Which of the following best describes the internal layering of Jupiter, from the center outward?


A) Core of rock, metal, and hydrogen compounds; thick layer of metallic hydrogen; layer of liquid hydrogen; layer of gaseous hydrogen; cloud layer
B) Core of rock and metal; mantle of lower density rock; upper layer of gaseous hydrogen; cloud layer
C) Solid rock core; layer of solid metallic hydrogen; layer of pure liquid hydrogen; cloud layer
D) Liquid core of hydrogen compounds; liquid hydrogen layer; metallic hydrogen layer; gaseous hydrogen layer; cloud layer

E) C) and D)
F) A) and D)

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How thick are Saturn's rings from top to bottom?


A) a few million kilometers
B) a few tens of thousands of kilometers
C) a few hundred kilometers
D) a few kilometers
E) a few tens of meters

F) None of the above
G) A) and D)

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If Jupiter were 10 times more massive, it would generate nuclear fusion in its core and be a star instead of a planet.

A) True
B) False

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Planetary rings are


A) nearer to their planet than any of the planet's large moons.
B) orbiting in the equatorial plane of their planet.
C) composed of a large number of individual particles that orbit their planet in accord with Kepler's third law.
D) known to exist for all of the jovian planets.
E) all of the above

F) A) and C)
G) A) and B)

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Hydrogen exists as a gas, liquid, and solid within Jupiter.

A) True
B) False

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Suppose you could float in space just a few meters above Saturn's rings. What would you see as you looked down on the rings?


A) countless icy particles, ranging in size from dust grains to large boulders
B) a solid, shiny surface, looking much like a piece of a DVD but a lot bigger
C) dozens of large "moonlets" made of metal and rock, each a few kilometers across
D) Nothing-up close, the rings would be so completely invisible that you'd have no way to know they are there. They can be seen only from a distance.

E) All of the above
F) B) and D)

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Io's Volcanoes Predicted? The intense volcanic activity on Io came as somewhat of a surprise to many when it was discovered by the Voyager mission in 1979. Nevertheless, argue that all of the elements where in place to make a prediction of intense volcanic activity on Io before the Voyager mission. Search on the web for the history of Io's volcanism to see if such a prediction was actually made.

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The intense volcanic activity on Io did ...

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Some of the moons of the jovian planets have significant atmospheres.

A) True
B) False

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Which statement about Io is true?


A) It is the most volcanically active body in our solar system.
B) It is thought to have a deep, subsurface ocean of liquid water.
C) It is the largest moon in the solar system.
D) It is the only moon in the solar system with a thick atmosphere.

E) B) and C)
F) A) and D)

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Describe two leading scenarios for the origin of the planetary rings. What makes us think that ring systems must be continually replenished?

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One scenario is that the material near t...

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What is the most abundant gas in Titan's atmosphere?


A) methane
B) nitrogen
C) hydrogen compounds
D) oxygen
E) argon

F) A) and B)
G) A) and D)

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