Section #: 31.2 Other Galaxies in the Universe

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

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