Astronomy Test

100 Questions  I  By Imback

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