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Chapter 6: Thermal Energy

Practice Test
      
  1.What is the term for heat moving through a material or from one material to another?  
  a.   temperature  
  b.   radiation  
  c.   convention  
  d.   conduction  
  Hint    
      
  2.What material property is important in refrigeration?  
  a.   Liquids evaporate more as they become warmer.  
  b.   When a gas is compressed, it gains thermal energy.  
  c.   Liquids can gain thermal energy from their surroundings.  
  d.   All of the above.  
  Hint    
      
  3.How does heat produce work in an automobile engine?  
  a.   Friction in the engine produces heat.  
  b.   Heat produced by the engine is used to pump compressed air.  
  c.   Heat production by the engine expands gas, which forces the pistons to move.  
  d.   All of the above.  
  Hint    
      
  4.What is latent heat?  
  a.   the heat used to raise the temperature of steam  
  b.   the amount of energy required to change the physical state of a material  
  c.   Heat production by the engine expands gas, which forces the pistons to move.  
  d.   All of the above.  
  Hint    
      
  5.What means of heat transfer does not require a medium?  
  a.   conduction  
  b.   convection  
  c.   All means of heat transfer require a medium.  
  d.   radiation  
  Hint    
      
  6.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.   a measure of how much thermal energy is in an object  
  d.   All of the above.  
  Hint    
      
  7.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   volcanoes  
  b.   convection  
  c.   radiation  
  d.   conduction  
  Hint    
      
  8.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Kelvin  
  b.   Galileo  
  c.   Celsius  
  d.   Fahrenheit  
  Hint    
      
  9.What temperature is the boiling point of water on the Celsius scale.  
  a.   0°C  
  b.   212°C  
  c.   100°C  
  d.   32°C  
  Hint    
      
  10.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.   Heat moves from a warm object to a cold object.  
  c.   Transfer of thermal energy continues until objects are in thermal equilibrium.  
  d.   All of the above.  
  Hint    
      
  11.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   temperature  
  b.   radiation  
  c.   convection  
  d.   conduction  
  Hint    
      
  12.How does a vacuum bottle minimize heat transfer?  
  a.   Reflective coating inside the bottle minimizes radiation.  
  b.   An inner vacuum in the bottle prevents convection and conduction.  
  c.   Inner glass bottles minimize conduction.  
  d.   All of the above.  
  Hint    
      
  13.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.   Inner glass bottles minimize conduction.  
  d.   All of the above.  
  Hint    
      
  14.What is a potential environmental problems related to thermal pollution?  
  a.   eutrophication of a body of water  
  b.   introduction of new species  
  c.   Increased temperature of water may make it difficult for fish to breathe.  
  d.   All of the above.  
  Hint    
      
  15.Why are gasoline engines so inefficient?  
  a.   because exhaust from gasoline engines damages the environment  
  b.   because most of the heat produced just makes the car warmer and does not work  
  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    

 
   
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