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Stars and Galaxies

Practice Test
      
  1.Why are circumpolar constellations visible all year long?  
  a.   because they are the closest  
  b.   because they are located directly above the North Pole  
  c.   because they are the brightest stars  
  d.   All constellations are visible all year long.  
  Hint    
      
  2.The North Star,___________, is positioned almost directly over the North Pole.  
  a.   Sirius  
  b.   Orion  
  c.   Polaris  
  d.   Betelgeuse  
  Hint    
      
  3.Particles that escape from the sun's __________ move through space as solar wind.  
  a.   photosphere  
  b.   surface  
  c.   chromosphere  
  d.   corona  
  Hint    
      
  4.The __________ __________ is a measure of the amount of light received on earth.  
  a.   apparent measure  
  b.   absolute magnitude  
  c.   apparent magnitude  
  d.   absolute measure  
  Hint    
      
  5.A binary system is composed of ___________ stars.  
  a.   two  
  b.   five  
  c.   three  
  d.   four  
  Hint    
      
  6.Prominence, or huge arching columns of gas, are thought to be caused by__________.  
  a.   the rotation of the galaxy  
  b.   the magnetic field associated with sunspots  
  c.   Earth's magnetic field  
  d.   the Sun's rotation  
  Hint    
      
  7.Circumpolar constellations __________.  
  a.   are located in a circular constellation.  
  b.   are always located above the North Pole.  
  c.   never appear around the North Pole.  
  d.   appear to circle around the North Star as the Earth rotates.  
  Hint    
      
  8.Fusion occurs when __________ and __________ combine to make energy.  
  a.   hydrogen, oxygen  
  b.   carbon, helium  
  c.   carbon, oxygen  
  d.   hydrogen, helium  
  Hint    
      
  9.Our sun is considered a star of__________ temperature.  
  a.   low  
  b.   cool  
  c.   hot  
  d.   medium  
  Hint    
      
  10.What does CME stand for?  
  a.   Coronal Materials Ejections  
  b.   Coronal Mass Emissions  
  c.   Central Mass Ejections  
  d.   Coronal Mass Ejections  
  Hint    
      
  11.Another way to define "nebula" is __________.  
  a.   dying star  
  b.   exploding star  
  c.   old star  
  d.   young star  
  Hint    
      
  12.Astronomers use a star's __________ to determine how far it is from Earth.  
  a.   size  
  b.   parallax  
  c.   brightness  
  d.   parallel  
  Hint    
      
  13.By studying a star's spectra, scientists can determine __________ found in the star's atmosphere.  
  a.   gases  
  b.   dust  
  c.   clusters  
  d.   elements  
  Hint    
      
  14.Once stars run out of hydrogen and the temperature begins to increase, these stars are said to be __________.  
  a.   a supernova  
  b.   a giant  
  c.   a galaxy  
  d.   a white dwarf  
  Hint    
      
  15.When fusion occurs, the mass lost is converted into __________.  
  a.   mass  
  b.   liquid  
  c.   matter  
  d.   energy  
  Hint    
      
  16.The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?  
  a.   the universe  
  b.   It doesn't orbit.  
  c.   the solar system  
  d.   the Milky Way  
  Hint    
      
  17.The __________ __________of a star is a measure of the amount of light it gives off.  
  a.   apparent magnitude  
  b.   apparent strength  
  c.   absolute solitude  
  d.   absolute magnitude  
  Hint    
      
  18.__________ is the process that creates energy in the sun.  
  a.   Parallax  
  b.   Blue shift  
  c.   Fission  
  d.   Fusion  
  Hint    
      
  19.When a star becomes a supernova its brightness __________.  
  a.   decreases  
  b.   vanishes  
  c.   doesn't change  
  d.   increases  
  Hint    
      
  20.Which, if any, of the three types of galaxies occur the most often?  
  a.   elliptical  
  b.   irregular  
  c.   spiral  
  d.   They occur in equal amounts.  
  Hint    

 
   
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