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

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