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

McGraw-Hill / Glencoe
The McGraw-Hill Companies