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Chapter 6: Thermal Energy

Practice Test
      
  1.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    
      
  2.What temperature is the boiling point of water on the Celsius scale.  
  a.   32°C  
  b.   100°C  
  c.   212°C  
  d.   0°C  
  Hint    
      
  3.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.   212°C  
  d.   All of the above.  
  Hint    
      
  4.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   conduction  
  b.   temperature  
  c.   radiation  
  d.   convection  
  Hint    
      
  5.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Galileo  
  b.   Fahrenheit  
  c.   Celsius  
  d.   Kelvin  
  Hint    
      
  6.What is a potential environmental problems related to thermal pollution?  
  a.   eutrophication of a body of water  
  b.   Increased temperature of water may make it difficult for fish to breathe.  
  c.   introduction of new species  
  d.   All of the above.  
  Hint    
      
  7.Why are gasoline engines so inefficient?  
  a.   because most of the heat produced just makes the car warmer and does not work  
  b.   because exhaust from gasoline engines damages the environment  
  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    
      
  8.How is thermal energy transferred from one object to another?  
  a.   Heat moves from a warm object to a cold object.  
  b.   Transfer of thermal energy continues until objects are in thermal equilibrium.  
  c.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  d.   All of the above.  
  Hint    
      
  9.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.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  d.   All of the above.  
  Hint    
      
  10.What can be said of two objects that are in thermal equilibrium?  
  a.   The two objects have the same temperature.  
  b.   the amount of energy required to change the physical state of a material  
  c.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  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 latent heat?  
  a.   the amount of energy required to change the physical state of a material  
  b.   heat that is not measurable  
  c.   the heat used to raise the temperature of steam  
  d.   All of the above.  
  Hint    
      
  13.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   conduction  
  b.   radiation  
  c.   convection  
  d.   volcanoes  
  Hint    
      
  14.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    
      
  15.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.   convection  
  d.   All of the above.  
  Hint    

 
   
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