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Chapter 6: Thermal Energy

Practice Test
      
  1.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    
      
  2.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   temperature  
  b.   radiation  
  c.   conduction  
  d.   convection  
  Hint    
      
  3.What is a potential environmental problems related to thermal pollution?  
  a.   Increased temperature of water may make it difficult for fish to breathe.  
  b.   radiation  
  c.   conduction  
  d.   All of the above.  
  Hint    
      
  4.Why are gasoline engines so inefficient?  
  a.   because the world is quickly running out of oil, which is used to manufacture gasoline  
  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 cars are heavy and therefore difficult to move  
  Hint    
      
  5.What is latent heat?  
  a.   heat that is not measurable  
  b.   the amount of energy required to change the physical state of a material  
  c.   because exhaust from gasoline engines damages the environment  
  d.   All of the above.  
  Hint    
      
  6.How does heat produce work in an automobile engine?  
  a.   Heat production by the engine expands gas, which forces the pistons to move.  
  b.   the amount of energy required to change the physical state of a material  
  c.   because exhaust from gasoline engines damages the environment  
  d.   All of the above.  
  Hint    
      
  7.How is thermal energy transferred from one object to another?  
  a.   Heat moves from a warm object to a cold object.  
  b.   Thermal energy is transferred form something of higher temperature to something of lower temperature.  
  c.   Transfer of thermal energy continues until objects are in thermal equilibrium.  
  d.   All of the above.  
  Hint    
      
  8.What is the term for heat moving through a material or from one material to another?  
  a.   radiation  
  b.   conduction  
  c.   convention  
  d.   temperature  
  Hint    
      
  9.What can be said of two objects that are in thermal equilibrium?  
  a.   The objects have the same amount of potential energy.  
  b.   Heat energy is in transit between the objects.  
  c.   The two objects have the same temperature.  
  d.   All of the above.  
  Hint    
      
  10.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    
      
  11.What means of heat transfer does not require a medium?  
  a.   All means of heat transfer require a medium.  
  b.   radiation  
  c.   convection  
  d.   conduction  
  Hint    
      
  12.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   convection  
  b.   radiation  
  c.   conduction  
  d.   volcanoes  
  Hint    
      
  13.What is heat?  
  a.   the energy transferred from something of higher temperature to lower temperature  
  b.   a measure of how much thermal energy is in an object  
  c.   the amount of energy required to change the physical state of a material  
  d.   All of the above.  
  Hint    
      
  14.How does a vacuum bottle minimize heat transfer?  
  a.   Inner glass bottles minimize conduction.  
  b.   Reflective coating inside the bottle minimizes radiation.  
  c.   An inner vacuum in the bottle prevents convection and conduction.  
  d.   All of the above.  
  Hint    
      
  15.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Fahrenheit  
  b.   Kelvin  
  c.   Celsius  
  d.   Galileo  
  Hint    

 
   
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