Section #: 31.2 Other Galaxies in the Universe

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

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