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Chapter 6: Thermal Energy

Practice Test
      
  1.What temperature is the boiling point of water on the Celsius scale.  
  a.   32°C  
  b.   0°C  
  c.   212°C  
  d.   100°C  
  Hint    
      
  2.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.   Heat energy is in transit between the objects.  
  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.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  c.   Heat moves from a warm object to a cold object.  
  d.   All of the above.  
  Hint    
      
  4.What is latent heat?  
  a.   the heat used to raise the temperature of steam  
  b.   heat that is not measurable  
  c.   Heat moves from a warm object to a cold object.  
  d.   All of the above.  
  Hint    
      
  5.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    
      
  6.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    
      
  7.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.   Inner glass bottles minimize conduction.  
  d.   All of the above.  
  Hint    
      
  8.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   radiation  
  b.   volcanoes  
  c.   convection  
  d.   conduction  
  Hint    
      
  9.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    
      
  10.How does heat produce work in an automobile engine?  
  a.   Heat produced by the engine is used to pump compressed air.  
  b.   Friction in the engine produces heat.  
  c.   Heat production by the engine expands gas, which forces the pistons to move.  
  d.   All of the above.  
  Hint    
      
  11.Why are gasoline engines so inefficient?  
  a.   because exhaust from gasoline engines damages the environment  
  b.   because cars are heavy and therefore difficult to move  
  c.   because the world is quickly running out of oil, which is used to manufacture gasoline  
  d.   because most of the heat produced just makes the car warmer and does not work  
  Hint    
      
  12.What means of heat transfer does not require a medium?  
  a.   All means of heat transfer require a medium.  
  b.   convection  
  c.   radiation  
  d.   conduction  
  Hint    
      
  13.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    
      
  14.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Fahrenheit  
  b.   Kelvin  
  c.   Celsius  
  d.   Galileo  
  Hint    
      
  15.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   radiation  
  b.   temperature  
  c.   convection  
  d.   conduction  
  Hint    

 
   
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