Section #: 12.1 The Causes of Weather

Practice Test
      
  1.What is a large body of air that takes on the characteristics of the area over which it forms?  
  a.   an air mass  
  b.   a weather system  
  c.   a climate  
  d.   a cloud  
  Hint    
      
  2.Use the table to infer something about the climate of this area.

Mon Tue Wed Thurs Fri Sat Sun
Average temperature (°C) 23.3 22.2 22.2 15.6 16.7 16.7 17.8
Rainfall (cm) 0 0 3.31 0 0 0 0
Relative humidity 40‰ 60‰ 100‰ 80‰ 60‰ 50‰ 40‰
Air pressure (mb) 1000 998 - - - - -


 
  a.   It is often very hot.  
  b.   It is often very cold.  
  c.   Rainfall is extremely common.  
  d.   It receives occasional rainfall.  
  Hint    
      
  3.The exchange of heat or moisture between an air mass and the underlying surface is called __________.  
  a.   climate  
  b.   air mass modification  
  c.   air mass weather  
  d.   air mass convection  
  Hint    
      
  4.Long-term variations in weather for a particular area make up the __________ of an area.  
  a.   meteorology  
  b.   stability  
  c.   climate  
  d.   weather  
  Hint    
      
  5.What is the current state of the atmosphere called?  
  a.   weather  
  b.   climate  
  c.   rain  
  d.   stability  
  Hint    

 
   
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