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WorksheetsMilky Way Galaxy
Total questions: 26
Worksheet time: 13mins
What is the name of the region around outside of the milky way?
The disc
The bulge
The halo
The expanse
Where do we find the densest region of stars within the Milky Way?
The bulge
The disk
The halo
They are evenly distributed
Population I stars are ________ than Population II stars
older
younger
What is a Cepheid variable?
a very large star to changes its brightness
a star in the constellation Cepheid
a small star that changes size
Think back to the lab. What variable led us to distance using the period of brightness spikes of the Cepheid variables?
absolute magnitude
surface temp
mass
radius
Where is the sun located in the Milky Way galaxy?
near the center of the galaxy
about 2/3s towards the edge
in the halo of the galaxy
in the nuclear bulge of the galaxy
What did we use to find the distance of objects very far away?
OB stars
Cepheid variables
supernovas
Which population of stars are located in the disk with nearly circular orbits??
Population I stars
Population II stars
Where are population II stars found?
not in the disk!
in the halo
in the disk
Spiral Arms are easily seen because
a dense molecular clouds
atomic hydrogen clouds
OB associations stars
supernovas
Which constellation "contains" the center of the Milky Way galaxy
scorpius
orion
perseus
sagittarius
Which of the following correctly places these in order from LARGEST to SMALLEST?
galaxy -- local group/cluster -- planet -- solar system -- universe
universe -- local group/cluster -- galaxy -- solar system -- planet
planet -- solar system -- galaxy -- local group/cluster -- universe
universe -- galaxy -- solar system -- local group/cluster -- planet
When two stars are orbiting one another it's called ___
an unary system
a binary system
a trinary system
a doublet system
Astronomers think that most stars are born in groups, called ___
assemblages
bundles
clusters
blobs
Loosely bound collections of dozens or thousands of stars, usually in an irregular shape, are called ___
hexadecimal star systems
open clusters
globular clusters
nebulae
Which famous open cluster is located about 500 light years from Earth?
Hyades
Beehive Cluster
Pleiades
Butterfly Cluster
The Pleiades appear as a tightly-packed collection of stars, and a lot of people call them ___
The Six Siblings
The Seven Sisters
The Eight Dancers
The Nine Brothers
Clusters of hundreds of thousands of stars that form a roughly spherical shape are called ___
open clusters
closed clusters
globular clusters
bulbous clusters
How old are most globular clusters?
less than 200 million years old
about a billion years old
about 5 billion years old
over ten billion years old
The normal stars that are left in a globular cluster are mostly ___
low mass red stars
high mass red stars
low mass blue stars
high mass blue stars
Earth-like planets likely don't form in globular clusters because the stars ___
are too hot
are too young
are loosely packed
lack heavy metals
Which of the following best describes Population I stars?
Old, metal-poor, few or no planets, irregular orbits around the center of the galaxy.
Incredibly massive, very hot, no metal. Likely burned out very fast. Astronomers are divided about whether or not these stars ever even existed.
Young, metal-rich, lots of planets, regular elliptical orbits around the center of the galaxy.
