SCIN261 quiz 3
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School
American Public University *
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Course
261
Subject
Astronomy
Date
Apr 3, 2024
Type
Pages
5
Uploaded by 32denny
Quiz 3 (Weeks 5 & 6) - Results
Attempt 1 of 1
Written Jan 9, 2024 1:52 PM - Jan 9, 2024 2:08 PM
Attempt Score
100 / 100 - 100 %
Overall Grade (Highest Attempt)
100 / 100 - 100 %
Question 1
10 / 10 points
Triton, the largest satellite of Neptune, has
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Question 2
10 / 10 points
How many moons does Pluto have?
no measurable atmosphere.
a very thin atmosphere of nitrogen gas.
a dense atmosphere of nitrogen with methane clouds.
a dense atmosphere of methane and ammonia.
The atmospheric pressure at Triton's surface is about 1/70,000th the surface pressure
on Earth. Nitrogen is the main gas in Triton's atmosphere.
5
0
3
1
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Question 3
10 / 10 points
Neptune's moon, Triton, has a very old surface with many craters from ancient impacts,
similar to Earth's moon.
True
False
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Question 4
10 / 10 points
What is the only satellite in the Solar System with a substantial atmosphere?
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Question 5
10 / 10 points
Why is Europa still geologically active, despite its smaller size?
Pluto has a total of five moons: Charon, Nix, Hydra, Kerberos and Styx.
Triton's surface is covered with frozen nitrogen, water ice comprising and dry ice.
Triton is geologically active, so its surface is relatively young due to resurfacing
Europa
Callisto
Ganymede
Titan
Titan, the second-largest moon in the Solar System, is larger than Mercury and the
only satellite in the Solar System with a substantial atmosphere.
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Question 6
10 / 10 points
Titan is roughly the same size as Mercury, yet Titan has an atmosphere while Mercury
does not. This is because Titan is
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Question 7
10 / 10 points
The surface of Europa, one of the Galilean moons of Jupiter, appears to be covered
with
Europa has a thick atmosphere that traps in heat, like Venus.
Europa’s core contains a higher concentration of radioactive material.
Gravitational stresses from Jupiter, Io, and Ganymede heat the interior of the
moon.
Jupiter’s magnetic field keeps Europa’s interior in a molten state.
Europa is close enough to Jupiter, the most massive planet in our solar system, and
shares resonant orbits with Io and Ganymede, such that it experiences gravitational
stresses from all of these planetary bodies. These stresses cause the moon to flex,
heating its interior and preventing it from solidifying as quickly as it normally would
have.
denser.
a moon of Saturn.
more massive.
colder.
Located farther away from the Sun, gases in Titan's atmosphere move slower, allowing
Titan's limited gravity to hold onto them. At Mercury's high temperatures, atmospheric
gases would move too quickly and easily escape from Mercury's gravitational pull.
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Question 8
10 / 10 points
Saturn's moon Titan is different from all other moons of planets because
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Question 9
10 / 10 points
How are the moons Io and Triton different?
a smooth layer of ice, crossed by many cracks.
dark areas of older crust separated by lighter, grooved terrain.
many ancient craters and maria.
rugged mountain ranges and ancient volcanoes.
The surface of Europa is covered with a smooth layer of ice, crossed by many cracks.
Probably these cracks are the result of tidal forces on an ocean beneath the surface.
lakes of water with floating icebergs are seen upon its surface.
it possesses a thick atmosphere.
its orbit carries it directly over both poles of the planet.
continuously erupting volcanoes are observed upon it.
Titan is the only moon in the solar system with clouds and a dense, planet-like
atmosphere.
Io has a very thin atmosphere while Triton has none at all.
There are no real difference between Io and Triton.
Io's surface has relatively few craters while Triton's has many.
Io has sulfur volcanoes while Triton has ice volcanoes.
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Question 10
10 / 10 points
What is largest moon in the Solar System?
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Done
While both Io and Triton exhibit ongoing volcanic activity, renewing their surfaces over
time and given their thin atmospheres, Io's volcanoes spew forth sulfur compounds
while Triton has ice volcanoes.
Ganymede
Io
our Moon
Titan
Ganymede is the largest moon of Jupiter and is the largest in our solar system with a
diameter of 5,262 km.