Section #: 31.2 Other Galaxies in the Universe

Practice Test
  1.Galaxies that are extremely bright are called __________. SC.E.2.4.2  
  a.   active galactic nuclei  
  b.   superclusters  
  c.   radio galaxies  
  d.   spiral galaxies  
  2.The redshift of quasars measures __________. SC.E.2.4.3  
  a.   their age of formation  
  b.   their intensity  
  c.   their distance from Earth  
  d.   their shape  
  3.Which galaxy shape is not a part of Hubble's classification system? SC.E.2.4.2  
  a.   spiral  
  b.   irregular  
  c.   spherical  
  d.   elliptical  
  4.How did Hubble categorize galaxies? SC.E.2.4.2  
  a.   distance from the Milky Way  
  b.   pulsating variable stars  
  c.   shapes  
  d.   luminosity  
  5.Galaxies are organized into large groups called __________. SC.E.2.4.2  
  a.   superclusters  
  b.   solar systems  
  c.   variable galaxies  
  d.   super galaxies  
  6.The smallest galaxies are called __________ and the largest are called __________. SC.E.2.4.2  
  a.   irregular, ellipticals  
  b.   dwarf ellipticals, giant spirals  
  c.   dwarf ellipticals, giant ellipticals  
  d.   dwarf spirals, giant ellipticals  
  7.What was the first galaxy to be discovered outside of Earth's galaxy? SC.E.2.4.2  
  a.   the Andromeda Galaxy  
  b.   the Sagittarius Galaxy  
  c.   the Local Group  
  d.   the Virgo  
  8.Most of the mass in cluster galaxies is __________. SC.E.2.4.2  
  a.   pulsating  
  b.   visible  
  c.   invisible  
  d.   spinning  

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