Unit 3 Test Question Preview (ID: 36011)
Universe, Stars, Galaxies.
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Our sun will not become a black hole because it is
a) too close to us
b) too cool
c) too large
d) too small
Our Sun will end as a
a) black dwarf
b) black hole
c) nova
d) white dwarf
Which factor does not affect a stars luminosity?
a) Stars distance
b) Stars Shape
c) Stars Size
d) Stars temperature
Which object forms by the contraction of a large sphere of gases causing the nuclear fusion of lighter elements into heavier elements
a) comet
b) planet
c) star
d) moon
By using a spectroscope as astronomer can
a) measure the size of a star
b) measure the altitude of a star
c) identify elements in the atmosphere of a star
d) measure the diameter of a star
a light year measures
a) distance
b) time
c) velocity
d) miles
The first step in the life cycle of a star is
a) protostar
b) nebula
c) main sequence
d) blue giant
Andromeda serves as a model for our galaxy because
a) it's our nearest neighbor
b) same size
c) same shape
d) visible without a telescope
The Sun and Siruis have the same absolute magnitude, but the Sun appears much brighter because it is
a) much bigger
b) closer
c) variable
d) yellow
In the center of every Galaxy, there is theoritcally a/an
a) pulsar
b) quasar
c) neutron star
d) black hole
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