Astronomy 120 - Stars and Galaxies » Fall 2022 » Unit 11 Quiz
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Question #1
The structure within our galactic plane was determined by observing
A.
Cepheid variable stars.
B.
neutral hydrogen.
C.
dark matter.
D.
globular clusters.
Question #2
The motions of the material in the galactic disk were determined by
A.
watching the halo stars shift with respect to background stars.
B.
observing the Doppler shifting of neutral hydrogen.
C.
seeing the dark matter shift in RA & dec.
D.
calculating the orbits of distant stars using Kepler's laws.
Question #3
The brighter the region of the Milky Way, the more mass is present in that region.
A.
False
B.
True
Question #4
The Great Debate was resolved when the Universe was determined to
A.
generally disk shaped.
B.
immense and much larger than previously thought..
C.
consisting of only the Milky Way.
D.
devoid of stars beyond the Milky Way galaxy.
Question #5
The galactic bulge can be found beyond the halo.
A.
True
B.
False
Question #6
The Shapley-Curtis Debate (a.k.a. the "Great Debate" in astronomy) mainly focused on determining the size of the Universe. This debate was primarily resolved when
A.
the period-luminosity relationship of Cepheids was determined
B.
Curtis was shown to be incorrect
C.
Shapley died
D.
Hubble determined the distance to the great "spiral nebula of Andromeda"
Question #7
A(n) is an example of baryonic dark matter.
A.
supernova
B.
black hole
C.
cepheids
Question #8
Sagittarius A* is more massive than all the ISM in the galaxy.
A.
True
B.
False
Question #9
The stars close to the supermassive black hole at the center of our galaxy are all spiraling into the black hole (to their doom!).
A.
False
B.
True
Question #10
Globular clusters are made up of primarily old stars.
A.
False
B.
True
Question #11
The metallicity of the Sun is
A.
low.
B.
non-existent.
C.
impossible to determine.
D.
high.
Question #12
Dark matter can be seen only in the infrared wavelengths.
A.
False
B.
True
Question #13
The metallicity of M type stars
A.
can vary greatly.
B.
is low.
C.
is high.
D.
is impossible to determine.
Question #14
The Sun is
A.
Population IV star.
B.
Population III star.
C.
Population I star.
D.
Population II star.
Question #15
Astronomers have a number of candidates for what they think dark matter could be. Those candidates include all of these, except
A.
WIMPS
B.
MACHOS
C.
NeRDS
D.
non-baryonic matter
Question #16
The "metallicity" refers to the amount of within stars.
A.
gold, silver and bronze
B.
stainless steel
C.
elements heavier than helium
D.
platinum group metals
Question #17
The Sun likely formed as part of
A.
an open cluster
B.
atomic cluster
C.
an emission nebula
D.
a globular cluster
Question #18
Open clusters are gravitationally bound clumps of over tens of thousands of stars found within the plane of the galaxy.
A.
True
B.
False
Question #19
O and B type stars are typically examples of
A.
halo stars.
B.
Population I stars.
C.
low mass stars.
D.
Population II stars.
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