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Chapter 6: Thermal Energy

Practice Test
      
  1.How does heat produce work in an automobile engine?  
  a.   Friction in the engine produces heat.  
  b.   Heat produced by the engine is used to pump compressed air.  
  d.   All of the above.  
  Hint    
      
  2.What is the term for heat moving through a material or from one material to another?  
  a.   temperature  
  b.   conduction  
  c.   convention  
  d.   radiation  
  Hint    
      
  3.What is heat?  
  a.   a measure of how much thermal energy is in an object  
  b.   the amount of energy required to change the physical state of a material  
  c.   convention  
  d.   All of the above.  
  Hint    
      
  4.What can be said of two objects that are in thermal equilibrium?  
  a.   Heat energy is in transit between the objects.  
  b.   the amount of energy required to change the physical state of a material  
  c.   convention  
  d.   All of the above.  
  Hint    
      
  5.What is latent heat?  
  a.   the amount of energy required to change the physical state of a material  
  b.   the heat used to raise the temperature of steam  
  c.   convention  
  d.   All of the above.  
  Hint    
      
  6.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   conduction  
  b.   radiation  
  c.   temperature  
  d.   convection  
  Hint    
      
  7.What means of heat transfer does not require a medium?  
  a.   conduction  
  b.   All means of heat transfer require a medium.  
  c.   convection  
  d.   radiation  
  Hint    
      
  8.How is thermal energy transferred from one object to another?  
  a.   Transfer of thermal energy continues until objects are in thermal equilibrium.  
  b.   Heat moves from a warm object to a cold object.  
  c.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  d.   All of the above.  
  Hint    
      
  9.What temperature is the boiling point of water on the Celsius scale.  
  a.   212°C  
  b.   0°C  
  c.   100°C  
  d.   32°C  
  Hint    
      
  10.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Kelvin  
  b.   Fahrenheit  
  c.   Celsius  
  d.   Galileo  
  Hint    
      
  11.How does a vacuum bottle minimize heat transfer?  
  a.   Reflective coating inside the bottle minimizes radiation.  
  b.   An inner vacuum in the bottle prevents convection and conduction.  
  c.   Inner glass bottles minimize conduction.  
  d.   All of the above.  
  Hint    
      
  12.What material property is important in refrigeration?  
  a.   When a gas is compressed, it gains thermal energy.  
  b.   An inner vacuum in the bottle prevents convection and conduction.  
  c.   Inner glass bottles minimize conduction.  
  d.   All of the above.  
  Hint    
      
  13.What is a potential environmental problems related to thermal pollution?  
  a.   introduction of new species  
  b.   Increased temperature of water may make it difficult for fish to breathe.  
  c.   eutrophication of a body of water  
  d.   All of the above.  
  Hint    
      
  14.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   volcanoes  
  b.   conduction  
  c.   convection  
  d.   radiation  
  Hint    
      
  15.Why are gasoline engines so inefficient?  
  a.   because exhaust from gasoline engines damages the environment  
  b.   because most of the heat produced just makes the car warmer and does not work  
  c.   because the world is quickly running out of oil, which is used to manufacture gasoline  
  d.   because cars are heavy and therefore difficult to move  
  Hint    

 
   
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