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Chapter 6: Thermal Energy

Practice Test
      
  1.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    
      
  2.What is 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    
      
  3.What means of heat transfer does not require a medium?  
  a.   radiation  
  b.   All means of heat transfer require a medium.  
  c.   convection  
  d.   conduction  
  Hint    
      
  4.What is the term for heat moving through a material or from one material to another?  
  a.   convention  
  b.   temperature  
  c.   radiation  
  d.   conduction  
  Hint    
      
  5.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   radiation  
  b.   volcanoes  
  c.   convection  
  d.   conduction  
  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.   When a gas is compressed, it gains thermal energy.  
  d.   All of the above.  
  Hint    
      
  7.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.   When a gas is compressed, it gains thermal energy.  
  d.   All of the above.  
  Hint    
      
  8.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   temperature  
  b.   conduction  
  c.   convection  
  d.   radiation  
  Hint    
      
  9.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    
      
  10.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Kelvin  
  b.   Celsius  
  c.   Galileo  
  d.   Fahrenheit  
  Hint    
      
  11.How does heat produce work in an automobile engine?  
  a.   Heat produced by the engine is used to pump compressed air.  
  b.   Heat production by the engine expands gas, which forces the pistons to move.  
  c.   Galileo  
  d.   All of the above.  
  Hint    
      
  12.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    
      
  13.What is a potential environmental problems related to thermal pollution?  
  a.   introduction of new species  
  b.   Increased temperature of water may make it difficult for fish to breathe.  
  c.   eutrophication of a body of water  
  d.   All of the above.  
  Hint    
      
  14.What temperature is the boiling point of water on the Celsius scale.  
  a.   32°C  
  b.   212°C  
  c.   100°C  
  d.   0°C  
  Hint    
      
  15.How does a vacuum bottle minimize heat transfer?  
  a.   Inner glass bottles minimize conduction.  
  b.   Reflective coating inside the bottle minimizes radiation.  
  c.   100°C  
  d.   All of the above.  
  Hint    

 
   
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