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

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