Section #: 31.2 Other Galaxies in the Universe

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

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