Section #: 31.2 Other Galaxies in the Universe

Practice Test
  1.How did Hubble categorize galaxies? SC.E.2.4.2  
  a.   shapes  
  b.   pulsating variable stars  
  c.   luminosity  
  d.   distance from the Milky Way  
  2.Galaxies that are extremely bright are called __________. SC.E.2.4.2  
  a.   superclusters  
  b.   radio galaxies  
  c.   active galactic nuclei  
  d.   spiral galaxies  
  3.The smallest galaxies are called __________ and the largest are called __________. SC.E.2.4.2  
  a.   dwarf ellipticals, giant spirals  
  b.   dwarf ellipticals, giant ellipticals  
  c.   irregular, ellipticals  
  d.   dwarf spirals, giant ellipticals  
  4.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  
  5.Most of the mass in cluster galaxies is __________. SC.E.2.4.2  
  a.   pulsating  
  b.   spinning  
  c.   invisible  
  d.   visible  
  6.Galaxies are organized into large groups called __________. SC.E.2.4.2  
  a.   super galaxies  
  b.   solar systems  
  c.   variable galaxies  
  d.   superclusters  
  7.The redshift of quasars measures __________. SC.E.2.4.3  
  a.   their distance from Earth  
  b.   their shape  
  c.   their age of formation  
  d.   their intensity  
  8.What was the first galaxy to be discovered outside of Earth's galaxy? SC.E.2.4.2  
  a.   the Virgo  
  b.   the Local Group  
  c.   the Sagittarius Galaxy  
  d.   the Andromeda Galaxy  

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