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ASTRO 1 EXAM 4 NEWEST 2025/ 2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||LATEST VERSION!!!
Based on information about the Milky Way and
Andromeda...
A: the collision starts at 8 billion years in the move and is
completed by 9 billion years
B: the collision stars at about 1 billion years in the move
and is completed by 3 billion years
C: the collision stars just after 5 billion years in the move
and is completed by 8 billion years
D: the collision stars just after 3 billion years in the move
and is complete a bit after 5 billion years
E: never collide - ANSWER-D: the collision stars just after
3 billion years in the move and is complete a bit after 5
billion years
What kind of galaxies are the largest in our Universe?
A: spiral
B: irregular
C: elliptical - ANSWER-C: elliptical
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The galaxies near Andromeda looked like:
A: an oval shaped haze
B: beautiful spiral patterns
C: stars
D: clumpy, irregular structures - ANSWER-A: an oval
shaped haze
Whats true of irregular galaxies
A: they have spiral arms but are smaller than spiral
galaxies
B: the have regular smooth structures
C: they are usually larger than spiral galaxies
D: they have no defined shape or structure - ANSWER-D:
they have no defined shape or structure
What do spiral arms contain?
A: the hottest, newest stars
B: the coldest, newest stars
C: the hottest, oldest stars
D: the coldest, oldest stars - ANSWER-A: the hottest,
newest stars
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What type of stars does the bar contain?
A: old, cool stars that glow redder
B: young, cool stars that glow bluer
C: old, hot stars that glow bluer
D: old, cold stars that glow bluer - ANSWER-A: old, cool
stars that glow redder
What color are the star clusters in the spiral arms and
what does that mean?
A: red and means they are old
B: read and means they have formed recently
C: blue and means they are old
D: blue and means they have formed recently
E: black and means they are covered in dust - ANSWER-
D: blue and means they have formed recently
The ___ regions contain only old stars. The younger ones
have ended their lives. And the ___ regions contain both
young and old stars and the young, more luminous ones
dominate the light.
A: red, blue
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B: red, red
C: blue, blue
E: blue, red - ANSWER-A: red, blue
In the symbol for the Hubble type of a galaxy, sbc, the "B"
denotes-
A: tightly wound spiral arms
B: the presence of a bar
C: the presence of a ring
D: a large bulge component
E: loosely wound spiral arms - ANSWER-B: the presence
of a bar
What happens to the planets in a galaxy when that galaxy
collides with another galaxy?
A: smaller stars collide with each other, forming more
massive stars that swallow the planets
B: they are pulled out of their orbits by the tidal forces of
the intruding galaxy
C: they accrete a whole lot of new matter and become
stars themselves
ASTRO 1 EXAM 4 NEWEST 2025/ 2026 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||LATEST VERSION!!!
Based on information about the Milky Way and
Andromeda...
A: the collision starts at 8 billion years in the move and is
completed by 9 billion years
B: the collision stars at about 1 billion years in the move
and is completed by 3 billion years
C: the collision stars just after 5 billion years in the move
and is completed by 8 billion years
D: the collision stars just after 3 billion years in the move
and is complete a bit after 5 billion years
E: never collide - ANSWER-D: the collision stars just after
3 billion years in the move and is complete a bit after 5
billion years
What kind of galaxies are the largest in our Universe?
A: spiral
B: irregular
C: elliptical - ANSWER-C: elliptical
,2|Page
The galaxies near Andromeda looked like:
A: an oval shaped haze
B: beautiful spiral patterns
C: stars
D: clumpy, irregular structures - ANSWER-A: an oval
shaped haze
Whats true of irregular galaxies
A: they have spiral arms but are smaller than spiral
galaxies
B: the have regular smooth structures
C: they are usually larger than spiral galaxies
D: they have no defined shape or structure - ANSWER-D:
they have no defined shape or structure
What do spiral arms contain?
A: the hottest, newest stars
B: the coldest, newest stars
C: the hottest, oldest stars
D: the coldest, oldest stars - ANSWER-A: the hottest,
newest stars
,3|Page
What type of stars does the bar contain?
A: old, cool stars that glow redder
B: young, cool stars that glow bluer
C: old, hot stars that glow bluer
D: old, cold stars that glow bluer - ANSWER-A: old, cool
stars that glow redder
What color are the star clusters in the spiral arms and
what does that mean?
A: red and means they are old
B: read and means they have formed recently
C: blue and means they are old
D: blue and means they have formed recently
E: black and means they are covered in dust - ANSWER-
D: blue and means they have formed recently
The ___ regions contain only old stars. The younger ones
have ended their lives. And the ___ regions contain both
young and old stars and the young, more luminous ones
dominate the light.
A: red, blue
, 4|Page
B: red, red
C: blue, blue
E: blue, red - ANSWER-A: red, blue
In the symbol for the Hubble type of a galaxy, sbc, the "B"
denotes-
A: tightly wound spiral arms
B: the presence of a bar
C: the presence of a ring
D: a large bulge component
E: loosely wound spiral arms - ANSWER-B: the presence
of a bar
What happens to the planets in a galaxy when that galaxy
collides with another galaxy?
A: smaller stars collide with each other, forming more
massive stars that swallow the planets
B: they are pulled out of their orbits by the tidal forces of
the intruding galaxy
C: they accrete a whole lot of new matter and become
stars themselves
