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.
globular clusters.
B.
neutral hydrogen.
C.
dark matter.
D.
Cepheid variable stars.
Question #2
The motions of the material in the galactic disk were determined by
A.
calculating the orbits of distant stars using Kepler's laws.
B.
observing the Doppler shifting of neutral hydrogen.
C.
seeing the dark matter shift in RA & dec.
D.
watching the halo stars shift with respect to background stars.
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.
devoid of stars beyond the Milky Way galaxy.
B.
consisting of only the Milky Way.
C.
immense and much larger than previously thought..
D.
generally disk shaped.
Question #5
The galactic bulge can be found beyond the halo.
A.
False
B.
True
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.
Curtis was shown to be incorrect
B.
Shapley died
C.
the period-luminosity relationship of Cepheids was determined
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.
cepheids
C.
black hole
Question #8
Sagittarius A* is more massive than all the ISM in the galaxy.
A.
False
B.
True
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.
True
B.
False
Question #10
Globular clusters are made up of primarily old stars.
A.
True
B.
False
Question #11
The metallicity of the Sun is
A.
non-existent.
B.
impossible to determine.
C.
low.
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 high.
C.
is low.
D.
is impossible to determine.
Question #14
The Sun is
A.
Population II star.
B.
Population I star.
C.
Population III star.
D.
Population IV 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.
non-baryonic matter
B.
WIMPS
C.
NeRDS
D.
MACHOS
Question #16
The "metallicity" refers to the amount of within stars.
A.
stainless steel
B.
gold, silver and bronze
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.
a globular cluster
D.
an emission nebula
Question #18
Open clusters are gravitationally bound clumps of over tens of thousands of stars found within the plane of the galaxy.
A.
False
B.
True
Question #19
O and B type stars are typically examples of
A.
Population II stars.
B.
Population I stars.
C.
halo stars.
D.
low mass stars.
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