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Quizzes Quiz
Stars and Galaxies

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

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