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

 
   
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