Name: 
 

ES21  Astronomy of the Solar System                           Exam 4



Completion
Complete each sentence or statement.
 

 1. 

The largest satellites of Jupiter are known as the _______________ satellites.
 

 

 2. 

The _______________ was a large cyclonic storm in the atmosphere of Neptune observed by Voyager 2.
 

 

 3. 

A satellite orbiting inside the ________  Limit of a planet will eventually be destroyed and become part of a ring system.
 

 

 4. 

On Jupiter, the high, cool cloud belts are called _____________
 

 

 5. 

Volcanism is apparent on many objects in the solar system. However, volcanic activity is known to be currently occurring only on Earth and _______________.
 

 

 6. 

Jupiter's shape is _______________ because it is rotating rapidly and has a low density.
 

 

 7. 

The region of Jupiter that is responsible for the magnetic field is composed of _______________.
 

 

True/False
Indicate whether the sentence or statement is true or false.
 

 8. 

Jupiter is about as large as a Jovian planet can ever be.
 

 9. 

Jupiter's ring is composed of icy particles.
 

 10. 

Jupiter's interior is mostly liquid helium.
 

 11. 

Jupiter's intense magnetic field traps high energy particles from the solar wind and forms a radiation belt around the planet.
 

 12. 

Saturn's rings are composed of icy particles.
 

 13. 

The spokes in Saturn's rings are maintained by differential rotation.
 

 14. 

Although Uranus and Neptune have no liquid metallic hydrogen in their interiors, they do have magnetic fields.
 

 15. 

Satellites that lack craters are generally old, inactive bodies.
 

 16. 

Jupiter radiates less heat than it absorbs from the sun.
 

 17. 

Saturn's belts and zones are obscured by haze high in its atmosphere.
 

 18. 

For an observer on Uranus, the ecliptic passes only a few degrees from the celestial poles.
 

 19. 

Io is the only body in the Solar System to have volcano’s
 

 20. 

Both Jupiter and Saturn contain liquid metallic hydrogen.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 21. 

The particles in Jupiter's ring
a.
must be material from eruptions of volcanoes on Io.
b.
must be silicate particles
c.
must be particles of ices
d.
must be metallic particles.
e.
must be pieces of captured comets.
 

 22. 

Europa has few craters because
a.
it has erased craters nearly as fast as they have formed.
b.
it is protected from impacts by Jupiter's gravity.
c.
it keeps one face always pointed toward Jupiter which screens it from incoming meteorites.
d.
it does not have a solid surface.
e.
its surface is not strong enough to support craters.
 

 23. 

Jupiter is oblate. This means that
a.
Jupiter's radius is larger at its equator than at its poles.
b.
Jupiter has belts and zones in its upper atmosphere.
c.
Jupiter rotates very slowly.
d.
the density of the atmosphere increases until it is a liquid and no solid surface exists.
e.
Jupiter's radius is much larger than Earth's radius.
 

 24. 

Both Jupiter and Saturn
a.
have belt and zone circulation.
b.
have liquid metallic hydrogen in their interiors.
c.
have rings.
d.
emit more energy than they absorb from the sun.
e.
all of the above
 

 25. 

The excess heat produced by Jupiter and Saturn is the result of
a.
the planet's continual slow contraction.
b.
the large number of meteorite and comet impacts that occur each year.
c.
nuclear reactions in their liquid metallic hydrogen cores.
d.
hot molten lava rising to the surface.
e.
radioactive decay.
 

 26. 

The atmosphere(s) of _______________ contain(s) mostly nitrogen with traces of methane.
a.
Uranus
b.
Pluto
c.
Miranda
d.
Neptune
e.
Uranus and Neptune
 

 27. 

The magnetic fields of Uranus and Neptune are peculiar in that they are
a.
highly inclined to the axis of rotation.
b.
very strong.
c.
linked to the solar wind.
d.
produced by disturbances caused by the orbits of the moons.
e.
all of the above
 

 28. 

The Io flux tube is a
a.
large circular region on Io associated with a meteorite impact.
b.
channel of ionized gas flowing between Jupiter and Io that produces a huge electrical current.
c.
ring of material that orbits Io near a Lagrangian points in its orbit.
d.
new toothpaste dispenser.
e.
region on Io where numerous volcanoes are found.
 

 29. 

Uranus and Neptune do not contain liquid metallic hydrogen because they
a.
are not massive enough.
b.
rotate too slowly.
c.
have magnetic fields that are much too weak.
d.
are not rich enough in hydrogen.
e.
are too far from the sun.
 

 30. 

The surfaces of old icy satellites
a.
appear dark in color with many impact craters.
b.
appear very bright because ice is very reflective.
c.
generally show long bright grooves and a modest number of impact craters.
d.
appear dark in color with few impact craters.
e.
generally have small volcanoes that are active.
 

 31. 

The rotation of Uranus is peculiar in that
a.
it is much faster than is typical for Jovian planets.
b.
it cannot be measured because Uranus has no surface features.
c.
the equator rotates much faster than the poles.
d.
it is much slower than is typical for Jovian planets.
e.
the axis is nearly parallel to the plane of its orbit.
 

 32. 

The Great Dark Spot is
a.
the name of Uranus' south pole when it is turned away from the sun.
b.
a large ovoid on the surface of Miranda.
c.
a large volcano on Oberon
d.
a huge cyclonic storm on the surface of Neptune.
e.
a large gap in one of Uranus' rings
 

 33. 

Saturn's atmosphere is
a.
more brightly marked than Jupiter's.
b.
rich in free oxygen.
c.
hazy above the clouds.
d.
all of the above
e.
none of the above
 

 34. 

Uranus and Neptune appear blue because
a.
both of them have very small masses for Jovian planets.
b.
their atmospheres absorb blue light very efficiently.
c.
the wind speeds are very high and show a strong blue shift.
d.
their surfaces are covered with water and their clouds are very thin
e.
their atmospheres absorb red light very efficiently.
 

 35. 

Which of the following objects may have organic particles on its surface as a result of the interaction of sunlight with methane in its upper atmosphere.
a.
Hyperion
b.
Io
c.
Titan
d.
Ganymede
e.
Metis
 

 36. 

Saturn's rings are
a.
within the planet's Roche limit.
b.
composed of ice particles.
c.
in the plane of the planet's equator.
d.
all of the above
e.
none of the above
 

 37. 

Belt and zone circulation
a.
is caused by rising and sinking gases.
b.
is caused by the planet's magnetic field.
c.
has been observed only on Jupiter.
d.
is more obvious on Saturn than Jupiter.
e.
explains the formation of Cassini's division.
 

 38. 

Liquid metallic hydrogen
a.
is found in the atmosphere of Jupiter.
b.
is believed to exist on the surface of Titan.
c.
is believed to exist on Io.
d.
does not conduct electricity very well.
e.
none of the above
 

 39. 

Spokes in Saturn's rings are peculiar because
a.
the solar wind should blow small particles away.
b.
the magnetic field should prevent such features from forming.
c.
differential rotation should erase them quickly.
d.
they are found only in the inner most ring.
e.
they should freeze out very quickly.
 

 40. 

Jupiter does not have
a.
a hot interior.
b.
a dynamo effect.
c.
convention occurring in its atmosphere.
d.
any rings.
e.
crustal plates on its surface.
 

 41. 

_______________ made the first calculation of the orbit of Neptune and prediction of where to look to observe it.
a.
Galileo
b.
Benjamin Franklin
c.
Edwin Hubble
d.
William Herschel
e.
John Adams
 

 42. 

In what way is the rocky material of Jupiter's core different from the rocks found on Earth?
a.
It contains more liquid water.
b.
It is composed of iron and nickel because this material will settle to the core.
c.
It is composed entirely of ices that have frozen into a large rock like structure.
d.
It is much cooler because Jupiter is further from the sun.
e.
It is much hotter and more dense because of the extreme pressure at the core of Jupiter.
 

 43. 

We can be sure the particles in the rings of Neptune are very small because
a.
the rings are bright in forward scattered light.
b.
only small particles are produced in comet impacts with larger moons.
c.
the rings are faint in forward scattered light.
d.
the larger particles would be quickly destroyed by impacts with the shepherd satellites.
e.
the magnetic field of Neptune would quickly force large particles out of the rings.
 

 44. 

Jupiter rotates differentially, which in the case of Jupiter means that
a.
Jupiter rotates in the opposite direction of Earth.
b.
the magnetic field rotates faster than the visible surface.
c.
Jupiter rotates so that one side always faces the sun.
d.
the equator of Jupiter rotates faster than its poles.
e.
the poles of Jupiter rotate faster than its equator.
 

 45. 

Which of the following is/are found on Triton?
a.
flooded basins.
b.
a nitrogen atmosphere.
c.
craters.
d.
nitrogen volcanoes.
e.
all of the above
 

 46. 

Which of the Galilean satellites are geologically active?
a.
Europa and Io
b.
Io and Callisto
c.
Titan and Callisto
d.
Ganymede and Callisto
e.
Ganymede and Titan
 



 
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