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Chapter 25 & Chapter 26 Astronomy Test

33 Questions  I  By Kaysday
Astronomy Quizzes & Trivia
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1.  The satellite most responsible for studying the microwave universe and the nature of the cosmic background radiation
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C.
2.  The Black hole at the center of active galaxie or quasar requires ______ to radiate massive amounts of energy
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B.
C.
3.  Collisions between galaxies have a larger effect on the individual stars
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B.
4.  Collisions between galaxies are rare, just as in case with stars.
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B.
5.  Which type of galaxy is rare in the center of clusters?
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B.
C.
6.  ________ Galaxies may bridge the gap between spiral galaxies and quasars.
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B.
C.
7.  What is the meaning of isotropic?
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B.
8.  Dark matter is ____ %  of the matter in the universe
9.  Recent work with Type I supernovae at great distances suggests the universe may in face be accelerating its expansion, a discovery attributed the newly found ______
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10.  In the critical universe now proposed, the ration of matter / energy is about
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11.  Collisions between galaxies result in
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12.  What is the meaning of a "closed universe"?
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B.
13.  If the density of the universe is less than critical we will experience a ________.
14.  What is the effect on individual stars when galaxies collide?
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B.
15.  While yet unseen, some gravitational evidence suggests the existence of dark gallaxies
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B.
16.  Quasars end in a massive explosion as a gamma ray burst.
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B.
17.  A billion solar mass black hole has a radius of only _____ (in A.U)
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C.
18.  According to their H-R diagrams turn off points, how old are the oldest globular clusters?
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19.  The central regions of active galaxies are fed by ____
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C.
20.  The most massive galaxies have _____ of times more stars than the milky way.
21.  About how many galaxies are estimated to be in the observable universe?
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22.  While a variety of factors can reduce red shifts in the spectrum the red shift associated with the expansion of the universe is called
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23.  A galaxy is at a distance of one billion light years. What is true about the way we see that galaxy?
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C.
24.  The best method of determining the mass of nearby spiral galaxies is by:
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C.
25.  The last quasar probably died out a billion years ago, for none lie within a billion light years of us
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B.
26.  In our best current theory, how long ago did the first quasars form?
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27.  ______ is the concept that all large samples of the universe are alike in appearance everywhere in the universe.
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B.
28.  Why is it not correct to think of everything moving away from a central point in the universe?
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29.  Why are super-massive galaxies often found at the cores of rich galaxy clusters?
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30.  What determines whether colliding gallaxies will stick and merge or simply pass through eachother?
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31.  In their most energetic phase, a quasar can probably only last
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32.  What does the hubble law imply about the history of the universe?
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B.
33.  We now believe the majority of mass for most galaxies lies in their dark halos
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B.
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