Section #: 29.4 Formation of Our Solar System

Practice Test
  1.What are the three labeled parts of the comet shown in the figure?

  a.   coma, nucleus, tail  
  b.   corona, nucleus, end  
  c.   head, cone, tail  
  d.   ice core, cloud, fan  
  2.Comets are bodies that are __________ that orbit __________.  
  a.   icy, each planet  
  b.   larger than Earth, Earth  
  c.   helium gas, the Sun  
  d.   ice and rock, the Sun  
  3.The objects that eventually formed planets by colliding and merging are called __________.  
  a.   planetesimals  
  b.   stars  
  c.   asteroids  
  d.   solar nebula  
  4.Where are most asteroids located?  
  a.   orbiting all planets  
  b.   outside of Pluto's orbit  
  c.   between Earth and Venus  
  d.   between Mars and Jupiter  

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