Section #: 31.2 Other Galaxies in the Universe

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

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