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Europa NATS 1880 - Chapter 9
Terms in this set (30)
Titan is roughly the same size as Mercury, yet Titan has an atmosphere while Mercury does not. How can this be?
Even though Titan's gravity is weak, it is much colder, allowing molecules to be trapped in its atmosphere
On Saturn's moon Enceladus, fountains of ice particles and water vapor are seen to be spraying out of
tiger stripe regions close to the south pole
Neptune's moon Triton
orbits in the opposite direction to Neptune's rotation
Even though Titan has liquid methane on its surface, some internal heat, and plenty of carbon containing compounds, it is not a suitable place for life because
it is far too cold, and methane is not a very good biological solvent
Compared to the moons of Jupiter, the moons of Saturn, Uranus, and Neptune
contain not only water ice but also methane and other ices
Much of Europa's surface appears chaotic and clogged with huge iceberg like blocks. This is consistent with
a thin icy crust that has been broken into pieces by tidal forces below which is a subsurface ocean of water
The largest Jovian moon Ganymede and Titan are
larger than Mercury but smaller than the Earth
In the subsurface ocean beneath Europa's icy crust, if life exists, it most likely originated
close to volcanic vents on its ocean floor
Saturn's icy moon Enceladus
has fountains of ice particles and water vapor spraying out from its surface
Which of the following is the most convincing observation that suggests that like Europa, Ganymede may also have a subsurface ocean?
in addition to its internal magnetic field, Ganymede has a magnetic field induced by Jupiter which is consistent with a salty ocean beneath its crust
Which of the following best describes the internal structure of Europa?
thin icy crust, subsurface ocean of water, thick rocky mantle, central iron core
If Triton has a subsurface ocean, it will most likely consist of
water mixed with ammonia, methane, or other melted ices
Triton's retrograde orbit is consistent with it having
been captured by Neptune's gravity
Perhaps the MOST convincing piece of evidence suggesting that Europa has a subsurface ocean is the
fact that the magnetic field of Jupiter is able to induce a magnetic field in Europa consistent with a salty ocean beneath its crust
The first Jovian moons were discovered by
In addition to being the second largest moon in the solar system, Saturn's moon Titan, is
the only moon to have its own atmosphere
Which feature seen on Saturn's moon Iapetus suggests that its interior must have been warm at some time in the past?
the presence of a steep ridge running along its equator
Io has an elliptical orbit because
of orbital resonances with Europa and Ganymede
The fact that many of the larger Jovian moons orbit nearly in the equatorial plane of their host world, moving in the same direction as their planet's spin, suggest that they
formed from a rotating disk of gas and dust like a miniature solar system
Even though Jupiter's moon Io is similar in size to our geologically dead Moon, it is more geologically active than the Earth. How can this be?
Io is tidally heated due to its elliptical orbit, which causes the large tidal forces exerted by Jupiter to constantly change, flexing and distorting its interior
Which Galilean moons of Jupiter show evidence for subsurface oceans of water beneath their icy crusts?
Europa, Ganymede, and Callisto
Which of the four Galilean moons is least likely to harbor life beneath its surface?
In addition to being the largest moon in the solar system, Ganymede, the Galilean moon of Jupiter, is
the only moon to have its own internal magnetic field
Jovian moons are typically made of
ice and rock
What is the origin of the nitrogen in Titan's atmosphere?
breakdown of ammonia (NH3) by ultraviolet light from the Sun
The complexity of any life present in Europa's subsurface ocean is mainly limited by the
amount of available energy to sustain it
How is Titan, the moon of Saturn, similar to the Earth?
like the Earth, Titan has an atmosphere made mostly of molecular nitrogen
Which of the following has the Cassini orbiter observed on the surface of Saturn's moon Titan?
lakes of hydrocarbons in the north polar regions
When the Huygens probe touched down on Titan, it landed
on a solid surface of frozen water and methane ices that resembled a streambed
The lack of large impact craters on the surface of Europa is consistent with
a subsurface ocean of water because large impacts will break the thin crust causing water and slushy ice below to flood out and resurface the crust
THIS SET IS OFTEN IN FOLDERS WITH...
Chapter 10: The Nature and Evolution of Habitabili…
NATS 1880 CHAPTER 10
NATS 1880 Chapter 12:
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