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Astronomy Test

100 Questions  I  By Imback
Astronomy test

  
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1.  A radio telescope 100 meters across, when used to measure 10-centimeter waves, is
A.
B.
C.
D.
E.
2.  In space light travels about
A.
B.
C.
D.
3.  Charged particles trapped in Earth's magnetic field may collide with molecules in the upper atmosphere andproduce the glowing lights called
A.
B.
C.
D.
E.
4.  The dark region of a sunspot is often surrounded by a less dark region called the
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B.
C.
D.
E.
5.  The procedure of writing numbers as a decimal value between 1 and 10 times 10 raised toa n integer power (e.g., 2.4 x 10 ^4) is called
A.
B.
C.
D.
6.  A curved lens or mirror can form an image by bringing light to a(n)
A.
B.
C.
D.
E.
7.  When the next total solar eclipse occurs in the United States, viewers will have to
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B.
C.
D.
E.
8.  The ability to distinguish between details or to distinguish two adjacent objects as separate is
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B.
C.
D.
E.
9.  The type of electromagnetic radiation with a wavelength just longer than that of red light is
A.
B.
C.
D.
E.
10.  Modern theories of solar system formation posit that planets formed through aggregation of many smaller bodies, each perhaps only hundreds of kilometers in size, called
A.
B.
C.
D.
E.
11.  A light-year is defined as the
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B.
C.
D.
12.  The Hubble Space Telescope is a(n)
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B.
C.
D.
E.
13.  The density of Pluto is about
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B.
C.
D.
E.
14.  A reflecting telescope that uses a secondary mirror to reflect light to the side of the telescope is called a(n)
A.
B.
C.
D.
E.
15.  The gas tail of a comet is created by the effects of the
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B.
C.
D.
E.
16.  Ancient astronomers divided the sky into regions containing distinct groups of stars called
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D.
E.
17.  The process of forming layers within a body because of differences in thermal characteristics and densitybetween materials is called
A.
B.
C.
D.
E.
18.  The fraction of the light falling on a body that is reflected is the body's
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B.
C.
D.
E.
19.  Today, sites for new large ground-based telescopes are selected primarily on the basis of all the following except
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B.
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D.
E.
20.  Scientific results must be
A.
B.
C.
D.
21.  The basic unit of length in the metric system is the
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B.
C.
D.
22.  Compared with visible-light photons, a photon of radio waves has
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B.
C.
D.
E.
23.  Two remarkable aspects of our solar system that must be accounted for in any theory of cosmogony are that
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B.
C.
D.
24.  About 94 percent of the nuclei in the outer parts of the Sun are
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B.
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D.
E.
25.  If the North Star is Polaris, the South Star is
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B.
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D.
E.
26.  All of the energy of the Sun is generated in the
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B.
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D.
E.
27.  Which pair of planets was known to the ancient Greeks?
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B.
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D.
E.
28.  As of this writing, the most massive extrasolar planets detected are about ________________ times the mass ofJupiter
A.
B.
C.
D.
E.
29.  The period of Neptune's solar orbit is about
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B.
C.
D.
30.  As of this writing, how many of the newly-discovered extrasolar planets have been imaged directly?
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B.
C.
D.
E.
31.  Most of the rocks found on the Moon are
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B.
C.
D.
E.
32.  When a gas removes energy at a particular wavelength from radiation passing through it, it creates a(n)
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B.
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E.
33.  A method for improving the images produced by ground-based optical telescopes despite blurring by the Earth'satmosphere is called
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B.
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D.
E.
34.  If electrons are or removed from a neutral atom the atom is said to be
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D.
E.
35.  The known Kuiper belt objects have orbital semimajor axes in the approximate range
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B.
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D.
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36.  Doppler methods are biased toward finding planets
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B.
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D.
E.
37.  NASA's successor to the Hubble Space Telescope is to be the
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B.
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D.
E.
38.  The first extra-solar planets detected are not likely candidates for life because
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B.
C.
D.
E.
39.  In a spectrum, bright lines that appear at wavelengths where there is more radiation than at neighboring wavelengthsare called
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B.
C.
D.
E.
40.  A star that is 100 times fainter than another star at the same distance will be
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E.
41.  The outermost level of the Sun is the
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E.
42.  Which unit of measure, often used by astronomers, is not a preferred SI unit of combination?
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B.
C.
D.
E.
43.  Of the inner planets, which has the strongest magnetic field?
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B.
C.
D.
E.
44.  Violently volcanic, with many simultaneous eruptions now going on, is Jupiter’s satellite
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B.
C.
D.
E.
45.  Saturn’s satellite with water geysers, discovered from the Cassini mission, is
A.
B.
C.
D.
E.
46.  If a satellite orbiting just above the surface of the Earth orbits in about 1.5 hours, then at about how many Earthradii from the Earth's center must a satellite orbit to have a period of 24 hours?
A.
B.
C.
D.
E.
47.  The lowest possible energy state of an atom is called the
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B.
C.
D.
E.
48.  Most of the extrasolar planets detected since 1995 are unlikely to harbor life as we know it because
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B.
C.
D.
E.
49.  The solar corona is so hot it emits mainly
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B.
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D.
E.
50.  The wavelength peak of the Sun's radiation is in the middle of the
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D.
E.
51.  Several early reports of the detection of extrasolar planets later proved to be incorrect. This illustrates that
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B.
C.
D.
E.
52.  Of all Moon rocks sampled, rocks taken from the lunar maria tend to be the
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B.
C.
D.
E.
53.  The period between new Moons is called a
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B.
C.
D.
E.
54.  The highest and lowest tides occur
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B.
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D.
E.
55.  The moon looks reddish at a total lunar eclipse because
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B.
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D.
E.
56.  The theory that the Moon formed from a ring of material ejected from the Earth by a collision is the
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D.
E.
57.  Not long after the death of Nicholas Copernicus, a Danish nobleman used giant instruments to makeobservations of the planet's motions with unprecedented accuracy. This astronomer was
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C.
D.
E.
58.  The photosphere of the Sun as seen from Earth, covers an angle of about
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B.
C.
D.
E.
59.  Ptolemy's ideas about the Universe and a summary of the ideas of his predecessors were contained in his majorwork,
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B.
C.
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60.  The line that extends from one edge of an ellipse to the other, passing through both foci of the ellipse is calledthe
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B.
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D.
E.
61.  Compared with the Earth's orbit around the Sun, Uranus's orbit is
A.
B.
C.
D.
E.
62.  An object is moving through space. If all forces are removed from the object, then it will
A.
B.
C.
D.
63.  The most obvious difference between the images of planets and stars, as seen from the ground, is that stars
A.
B.
C.
D.
E.
64.  The closest views of Jupiter's moons have come from which spacecraft?
A.
B.
C.
D.
E.
65.  The process of breaking light down into its component colors creates a(n)
A.
B.
C.
D.
66.  The rule describing the relationship between the temperature of a material and the wavelength of its peak emittedradiation is
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B.
C.
D.
E.
67.  Galileo's telescopic observations of Venus proved conclusively that
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B.
C.
D.
E.
68.  The calendar containing 365 days with every fourth year a leap year, except century years not divisible by 400, is the
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B.
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D.
E.
69.  It is possible to explain the peculiar orientation of Uranus's magnetic field if the field is generated
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B.
C.
D.
E.
70.  The light we receive from the Sun comes from the layer of the Sun's atmosphere called the
A.
B.
C.
D.
E.
71.  The initial discovery of the rings of Uranus came accidentally during observations of its
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B.
C.
D.
E.
72.  If the Sun is just setting, and the Moon is at its first quarter phase, the Moon will be
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B.
C.
D.
E.
73.  The matter at the center of the head of a comet is the
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B.
C.
D.
E.
74.  So far, it appears that one way extra-solar planetary systems differ from our solar systems in that
A.
B.
C.
D.
E.
75.  Which is heavier, a ton of feathers or a ton of lead?
A.
B.
C.
D.
E.
76.  Among the many bodies that resulted from the aggregation of planetesimals when the solar system was formedwere minor planets, less than 1000 km across, called
A.
B.
C.
D.
E.
77.  The Galileo atmospheric probe found that the amount of water vapor in Jupiter's atmosphere, at least where itentered, is
A.
B.
C.
D.
E.
78.  The distance traveled by light or by an object is equal to speed times
A.
B.
C.
D.
79.  NASA's set of Great Observatories includes all but
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B.
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D.
E.
80.  Which is the only planet (of the 9-planet system) whose orbit is significantly tilted with respect to the ecliptic?
A.
B.
C.
D.
E.
81.  ________________ are objects more massive than Jupiter but not massive enough to start fusing hydrogen intheir cores
A.
B.
C.
D.
E.
82.  All other things being equal, and ignoring atmospheric effects, a reflecting telescope with a large objective mirror willhave, compared with a telescope with a smaller mirror,
A.
B.
C.
D.
E.
83.  Compared to surrounding regions on the photosphere, sunspots are
A.
B.
C.
D.
E.
84.  Dark lines threading their way across the Sun, visible in H light near sunspots are
A.
B.
C.
D.
E.
85.  The period of the orbit of Pluto around the Sun is
A.
B.
C.
D.
E.
86.  The Maunder minimum was a period beginning in the late 17th century when there were apparently no
A.
B.
C.
D.
E.
87.  The Earth's atmosphere shields us from most kinds of electromagnetic radiation. The exceptions are
A.
B.
C.
D.
E.
88.  The atomic model that places electrons in definite orbits around the nucleus but allows only certain orbits to exist isthe
A.
B.
C.
D.
E.
89.  A few meteorites contain
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B.
C.
D.
E.
90.  Much of our knowledge of the interior of the Earth comes from the study of planetary vibrations, which is thescience of
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B.
C.
D.
E.
91.  The composition of the dust in Comet Halley, as measured by the Giotto spacecraft in 1986, is most like that of
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B.
C.
D.
E.
92.  For any location on the Earth there is a point directly overhead in the sky called the
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B.
C.
D.
E.
93.  When a fragment of interplanetary matter survives its trip through an atmosphere to reach the surface of anastronomical body it is called a
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B.
C.
D.
E.
94.  Which of the following numbers has the same meaning as 8670  
A.
B.
C.
D.
95.  The closer a planet, asteroid, or comet is to the Sun in its orbit, the faster it moves. This is a consequence of
A.
B.
C.
D.
E.
96.  The largest planetary satellite in the solar system is
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B.
C.
D.
E.
97.  Which spacecraft mission is not intended to search for extrasolar planets?
A.
B.
C.
D.
E.
98.  The largest satellite of Saturn is
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B.
C.
D.
E.
99.  The rule describing the relationship between the total radiant energy emitted by a blackbody to its temperature is
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B.
C.
D.
E.
100.  The first satellite of the planet Pluto that was discovered is named
A.
B.
C.
D.
E.
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