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Astronomy Test

100 Questions  I  By Imback
Astronomy Quizzes & Trivia

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