Section #: 31.2 Other Galaxies in the Universe

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

McGraw-Hill / Glencoe
The McGraw-Hill Companies