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ASTRO 1 EXAM 3 NEWEST 2025/ 2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
VERSION!!!
Saturn's ring particles are composed mainly of:
silicate rocks
frozen carbon dioxide
droplets of very cold methane
carbon that has been compressed until it is highly
reflective
water ice - ANSWER-water ice
What features are abundant on Callisto and Ganymede
and almost absent on Europa and Io?
volcanoes
markings that show the surface is made of ice
impact craters
lakes and pools of liquid ammonia
rings - ANSWER-impact craters
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When astronomers say that Ganymede is a differentiated
body, they mean that it:
has a northern hemisphere which is different from its
southern hemisphere
has more of the larger crater types than the smaller ones
has a magnetic field that is not centered on its axis of
rotation
has a heavier core, surrounded by a lighter, icy mantle and
crust
has a color that is surprising among outer solar system
satellites - ANSWER-has a heavier core, surrounded by a
lighter, icy mantle and crust
The world in the solar system that is most active
volcanically is:
Earth
Neptune
Io
Mars
Ganymede - ANSWER-Io
The moon Triton orbits which of the planets?
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Mars
Jupiter
Saturn
Uranus
Neptune - ANSWER-Neptune
If there are at least a million asteroids, how did spacecraft
like Galileo survive their trip through the asteroid belt?
NASA sends its spacecraft above and below the orbits of
the asteroids in the belt to avoid collisions
spacecraft use a magnetic repulsion tool to make sure
asteroids do not come too close
although there are many asteroids, they are widely spaced
(there is lots of space between them)
the known asteroids are typically less than a centimeter
across, so they do not represent a danger to spacecraft
you can't fool me, NASA has lost over a dozen spacecraft
to collisions with asteroids - ANSWER-although there are
many asteroids, they are widely spaced (there is lots of
space between them)
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One region on Earth that has become a rich source of new
meteorites in recent decades (including the meteorite from
Mars that got famous because some scientists claimed
they had found evidence for the building blocks of life on
Mars) is:
the Yucatan peninsula of Mexico
Bayonne, New Jersey
the Great Salt Lake
Australia
the Antarctic - ANSWER-the Antarctic
Astronomers call the vast, rotating cloud of vapor and dust
from which the solar system formed:
the Oort Cloud
the Kuiper Belt
the proto-Sun
the solar nebula
Bayonne, New Jersey - ANSWER-the solar nebula
Which of the following is not a characteristic that worlds in
our solar system have in common:
ASTRO 1 EXAM 3 NEWEST 2025/ 2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) |ALREADY GRADED A+||NEWEST
VERSION!!!
Saturn's ring particles are composed mainly of:
silicate rocks
frozen carbon dioxide
droplets of very cold methane
carbon that has been compressed until it is highly
reflective
water ice - ANSWER-water ice
What features are abundant on Callisto and Ganymede
and almost absent on Europa and Io?
volcanoes
markings that show the surface is made of ice
impact craters
lakes and pools of liquid ammonia
rings - ANSWER-impact craters
,2|Page
When astronomers say that Ganymede is a differentiated
body, they mean that it:
has a northern hemisphere which is different from its
southern hemisphere
has more of the larger crater types than the smaller ones
has a magnetic field that is not centered on its axis of
rotation
has a heavier core, surrounded by a lighter, icy mantle and
crust
has a color that is surprising among outer solar system
satellites - ANSWER-has a heavier core, surrounded by a
lighter, icy mantle and crust
The world in the solar system that is most active
volcanically is:
Earth
Neptune
Io
Mars
Ganymede - ANSWER-Io
The moon Triton orbits which of the planets?
,3|Page
Mars
Jupiter
Saturn
Uranus
Neptune - ANSWER-Neptune
If there are at least a million asteroids, how did spacecraft
like Galileo survive their trip through the asteroid belt?
NASA sends its spacecraft above and below the orbits of
the asteroids in the belt to avoid collisions
spacecraft use a magnetic repulsion tool to make sure
asteroids do not come too close
although there are many asteroids, they are widely spaced
(there is lots of space between them)
the known asteroids are typically less than a centimeter
across, so they do not represent a danger to spacecraft
you can't fool me, NASA has lost over a dozen spacecraft
to collisions with asteroids - ANSWER-although there are
many asteroids, they are widely spaced (there is lots of
space between them)
, 4|Page
One region on Earth that has become a rich source of new
meteorites in recent decades (including the meteorite from
Mars that got famous because some scientists claimed
they had found evidence for the building blocks of life on
Mars) is:
the Yucatan peninsula of Mexico
Bayonne, New Jersey
the Great Salt Lake
Australia
the Antarctic - ANSWER-the Antarctic
Astronomers call the vast, rotating cloud of vapor and dust
from which the solar system formed:
the Oort Cloud
the Kuiper Belt
the proto-Sun
the solar nebula
Bayonne, New Jersey - ANSWER-the solar nebula
Which of the following is not a characteristic that worlds in
our solar system have in common:
