Astronomy Exams.

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Astronomy Exams.
Astronomy quiz

  
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1.  The event horizon of a black hole is defined as
A.
B.
C.
D.
2.  One outstanding feature of globular clusters is their lack of ________ main sequence stars
A.
B.
C.
D.
3.  What is a planetary nebula?
A.
B.
C.
D.
4.  What are small bodies in the solar system which travel about the Sun in highly eccentric orbits?
A.
B.
C.
D.
5.  A surface explosion on a white dwarf, caused by falling matter from the atmosphere of its binary companion, creates what kind of object?
A.
B.
C.
D.
6.  Neutron stars do not have:
A.
B.
C.
7.  If the theory that novae occur in close binary systems is correct, then novae should
A.
B.
C.
D.
8.  Degenerate refers to a state of matter at
A.
B.
C.
D.
9.  If galaxy A is four times more distant than galaxy B, then according to the Hubble Law, galaxy A will recede __________ than galaxy B.
A.
B.
C.
D.
E.
10.  The Oot Cloud is believed to be
A.
B.
C.
D.
E.
11.  Neutron stars have ____________ magnetic fields.
A.
B.
C.
D.
12.  Comets and asteroids are
A.
B.
C.
D.
13.  In A.D. 1054, Chinese astronomers observed the appearance of a new star, whose location is now occupied by
A.
B.
C.
D.
E.
14.  The collapse of the core of a high-mass star at the end of its life lasts approximately
A.
B.
C.
D.
15.  When the core of a star shrinks after hydrogen fusion stops,
A.
B.
C.
D.
16.  The Helix and Ring nebulae are
A.
B.
C.
D.
17.  The lowest mass object that can initiate thermonuclear fusion of hydrogen has a mass of about
A.
B.
C.
D.
E.
18.  Hubble's constant H0 , represents
A.
B.
C.
D.
19.  The density of a _________ is greater than the density of a ___________.
A.
B.
C.
D.
E.
20.  What temperature does COBE find the Big Bang has cooled to by now?
A.
B.
C.
D.
E.
21.  All Jovian planets have
A.
B.
C.
D.
E.
22.  Because almost all galaxies show redshifted spectra, we know that
A.
B.
C.
D.
E.
23.  A Cepheid star varies in luminosity because
A.
B.
C.
D.
24.  Which planet by itself contains the majority of mass of all the planets?
A.
B.
C.
D.
E.
25.  What produces a type-I supernova?
A.
B.
C.
D.
26.  Which of the following is inferred by Hubble's law?
A.
B.
C.
D.
27.  Homogeneity and isotropy, taken as assumptions regarding the structure and evolution of the universe, are known as
A.
B.
C.
D.
E.
28.  Which one supports the solar nebula theory of the origin of the solar system?
A.
B.
C.
D.
29.  A brown dwarf is
A.
B.
C.
D.
E.
30.  The large planetesimals would have grown faster than the smaller planetesimals because
A.
B.
C.
D.
E.
31.  Conservation of angular momentum states that as a cloud of interstellar gas and dust collapses, the velocity of the particles increases.
A.
B.
32.  Neutron stars have masses that range from
A.
B.
C.
D.
33.  Open clusters contain mostly
A.
B.
C.
D.
34.  What is Cygnus X-1?
A.
B.
C.
D.
E.
35.  If we lived on a galaxy one billion light-years from our own, what would we see?
A.
B.
C.
D.
36.  Essentially all the elements heavier than iron in our galaxy were formed
A.
B.
C.
D.
37.  A star is considered to begin its main sequence life when
A.
B.
C.
D.
38.  What characteristic of a star cluster is used to determine its age?
A.
B.
C.
D.
39.  Which of the following are the Jovian planets?
A.
B.
C.
D.
E.
40.  What event leads to the formation of a red giant?
A.
B.
C.
D.
E.
41.  We can identify only a small fraction of all the pulsars that exist in our galaxy because
A.
B.
C.
D.
42.  ________ is the result of mass distorting the fabric of spacetime.
A.
B.
C.
D.
43.  Measured ages of globular clusters and a study of the time required for massive stars to build up the present abundance of heavy elements suggests that the universe is
A.
B.
C.
D.
E.
44.  The Sun will at some time in the future become
A.
B.
C.
D.
45.  Which of the following is not a characteristic of the terrestrial planets?
A.
B.
C.
D.
E.
46.  If the Earth were to be condensed down in size until it became a black hole, its Schwarzschild radius would be
A.
B.
C.
D.
47.  Most planets thus far discovered around other stars were found by
A.
B.
C.
D.
48.  As a high-mass main-sequence star evolves off the main sequence, it follows a _______ on the HR diagram
A.
B.
C.
D.
49.  Black holes that are stellar remnants can be found by searching for
A.
B.
C.
D.
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