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Chapter 6: Thermal Energy

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

 
   
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