Section #: 31.2 Other Galaxies in the Universe

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

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