Section #: 31.2 Other Galaxies in the Universe

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

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