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ASTRONOMY (PHYS 1306) FINAL EXAM
REVIEW UH ACTUAL QUESTIONS 2026
WITH VERIFIED ANSWERS.
Among other considerations spiral galaxies differ from elliptical
galaxies in that spiral galaxies - correct answer--have a much
smaller mass range
-have much more cool interstellar gas and dust
-are much bluer on the average than elliptical galaxies
generally
Active galactic nuclei galaxies (AGNs) include galactic objects
like - correct answer--seyfert galaxies
-quasars
In studying the Milky Way - correct answer--its spiral structure
is best mapped using radio telescopes & doppler shifts of
known spectral lines
-the sun is generally a member of the Orion arm, and is
generally moving along with it
-important guidance in understanding its structure can be
obtained by studying other spiral galaxies
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the dark matter problem refers to - correct answer--the lack of
sufficient luminous mass to account for observed gravitational
effects of galaxies and clusters of galaxies
Which of the following observations bear directly on our present
best estimate for the age of the universe - correct answer--the
current temperature of the CBR and the fluctuations in its
intensity as a function of angular direction
-the current value of the Hubble constant
-the results of the supernovae projects
Regarding Quasars - correct answer--were originally incorrectly
all thought to be star-like or stellar objects in nature
-the brightest are thought to be due to jets pointed directly at us
from giant black holes in their centers
-they are ultimately a class of active galactic nuclei
Which of the following would likely to be a very reasonable
candidate for a star with a life-bearing planet? - correct answer-
-a G star in the arms of a spiral galaxy
-an F star in the arms of a spiral galaxy
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Life on earth - correct answer--generally is all based on DNA
-apparently started about 3.8 billion years ago
-began with the emergence of "extremophiles," primitive
bacteria-like cells that can exist in hostile environments
-existed as no more complex than single-cell bacteria for
several billion years
-may be a relatively rare example in the galaxy in the sense
that complex life is very rare
the most significant threats to the continued existence of our
species on earth include - correct answer--our own rapid
population growth
-the threat of major natural disasters like super-volcanos and
asteroid or comet impacts
dark energy - correct answer--is possibly due to quantum
fluctuations of the vacuum
-appears to provide the additional energy needed to make the
universe exactly flat
ASTRONOMY (PHYS 1306) FINAL EXAM
REVIEW UH ACTUAL QUESTIONS 2026
WITH VERIFIED ANSWERS.
Among other considerations spiral galaxies differ from elliptical
galaxies in that spiral galaxies - correct answer--have a much
smaller mass range
-have much more cool interstellar gas and dust
-are much bluer on the average than elliptical galaxies
generally
Active galactic nuclei galaxies (AGNs) include galactic objects
like - correct answer--seyfert galaxies
-quasars
In studying the Milky Way - correct answer--its spiral structure
is best mapped using radio telescopes & doppler shifts of
known spectral lines
-the sun is generally a member of the Orion arm, and is
generally moving along with it
-important guidance in understanding its structure can be
obtained by studying other spiral galaxies
, Page | 2
the dark matter problem refers to - correct answer--the lack of
sufficient luminous mass to account for observed gravitational
effects of galaxies and clusters of galaxies
Which of the following observations bear directly on our present
best estimate for the age of the universe - correct answer--the
current temperature of the CBR and the fluctuations in its
intensity as a function of angular direction
-the current value of the Hubble constant
-the results of the supernovae projects
Regarding Quasars - correct answer--were originally incorrectly
all thought to be star-like or stellar objects in nature
-the brightest are thought to be due to jets pointed directly at us
from giant black holes in their centers
-they are ultimately a class of active galactic nuclei
Which of the following would likely to be a very reasonable
candidate for a star with a life-bearing planet? - correct answer-
-a G star in the arms of a spiral galaxy
-an F star in the arms of a spiral galaxy
, Page | 3
Life on earth - correct answer--generally is all based on DNA
-apparently started about 3.8 billion years ago
-began with the emergence of "extremophiles," primitive
bacteria-like cells that can exist in hostile environments
-existed as no more complex than single-cell bacteria for
several billion years
-may be a relatively rare example in the galaxy in the sense
that complex life is very rare
the most significant threats to the continued existence of our
species on earth include - correct answer--our own rapid
population growth
-the threat of major natural disasters like super-volcanos and
asteroid or comet impacts
dark energy - correct answer--is possibly due to quantum
fluctuations of the vacuum
-appears to provide the additional energy needed to make the
universe exactly flat
