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Chapter 6: Thermal Energy

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

 
   
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