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Quizzes Quiz
Stars and Galaxies

Practice Test
  1.What does CME stand for?  
  a.   Coronal Materials Ejections  
  b.   Central Mass Ejections  
  c.   Coronal Mass Emissions  
  d.   Coronal Mass Ejections  
  2.The North Star,___________, is positioned almost directly over the North Pole.  
  a.   Sirius  
  b.   Betelgeuse  
  c.   Polaris  
  d.   Orion  
  3.The __________ __________of a star is a measure of the amount of light it gives off.  
  a.   apparent strength  
  b.   absolute magnitude  
  c.   apparent magnitude  
  d.   absolute solitude  
  4.A binary system is composed of ___________ stars.  
  a.   three  
  b.   four  
  c.   five  
  d.   two  
  5.Prominence, or huge arching columns of gas, are thought to be caused by__________.  
  a.   the magnetic field associated with sunspots  
  b.   the rotation of the galaxy  
  c.   Earth's magnetic field  
  d.   the Sun's rotation  
  6.When a star becomes a supernova its brightness __________.  
  a.   vanishes  
  b.   decreases  
  c.   increases  
  d.   doesn't change  
  7.By studying a star's spectra, scientists can determine __________ found in the star's atmosphere.  
  a.   elements  
  b.   gases  
  c.   clusters  
  d.   dust  
  8.Which, if any, of the three types of galaxies occur the most often?  
  a.   spiral  
  b.   elliptical  
  c.   They occur in equal amounts.  
  d.   irregular  
  9.Fusion occurs when __________ and __________ combine to make energy.  
  a.   carbon, helium  
  b.   hydrogen, helium  
  c.   carbon, oxygen  
  d.   hydrogen, oxygen  
  10.Why are circumpolar constellations visible all year long?  
  a.   because they are the brightest stars  
  b.   All constellations are visible all year long.  
  c.   because they are located directly above the North Pole  
  d.   because they are the closest  
  11.Another way to define "nebula" is __________.  
  a.   exploding star  
  b.   dying star  
  c.   young star  
  d.   old star  
  12.An aurora, like the aurora borealis is caused by  
  a.   solarwind  
  b.   CME's  
  c.   solar flares  
  d.   particles from solar flares  
  13.When stars are located closer to one another, their attraction to one another increases due to __________.  
  a.   their age  
  b.   their temperature  
  c.   their weight  
  d.   gravity  
  14.The __________ __________ is a measure of the amount of light received on earth.  
  a.   absolute measure  
  b.   apparent measure  
  c.   absolute magnitude  
  d.   apparent magnitude  
  15.The Moon orbits Earth and Earth orbits the Sun. What does the Sun orbit?  
  a.   It doesn't orbit.  
  b.   the Milky Way  
  c.   the universe  
  d.   the solar system  
  16.__________ is the process that creates energy in the sun.  
  a.   Parallax  
  b.   Fusion  
  c.   Blue shift  
  d.   Fission  
  17.Energy produced by the sun reaches the Earth through _________.  
  a.   convection and radiation  
  b.   radiation  
  c.   convection  
  d.   conduction  
  18.Circumpolar constellations __________.  
  a.   are located in a circular constellation.  
  b.   are always located above the North Pole.  
  c.   appear to circle around the North Star as the Earth rotates.  
  d.   never appear around the North Pole.  
  19.Particles that escape from the sun's __________ move through space as solar wind.  
  a.   surface  
  b.   chromosphere  
  c.   photosphere  
  d.   corona  
  20.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  

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