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

McGraw-Hill / Glencoe
The McGraw-Hill Companies