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Chapter 6: Thermal Energy

Practice Test
      
  1.What can be said of two objects that are in thermal equilibrium?  
  a.   Heat energy is in transit between the objects.  
  d.   All of the above.  
  Hint    
      
  2.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    
      
  3.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Fahrenheit  
  b.   Celsius  
  c.   Galileo  
  d.   Kelvin  
  Hint    
      
  4.What means of heat transfer does not require a medium?  
  a.   conduction  
  b.   radiation  
  c.   convection  
  d.   All means of heat transfer require a medium.  
  Hint    
      
  5.Why are gasoline engines so inefficient?  
  a.   because cars are heavy and therefore difficult to move  
  b.   because the world is quickly running out of oil, which is used to manufacture gasoline  
  c.   because exhaust from gasoline engines damages the environment  
  d.   because most of the heat produced just makes the car warmer and does not work  
  Hint    
      
  6.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    
      
  7.What is latent heat?  
  a.   the amount of energy required to change the physical state of a material  
  b.   the heat used to raise the temperature of steam  
  c.   Liquids can gain thermal energy from their surroundings.  
  d.   All of the above.  
  Hint    
      
  8.What is heat?  
  a.   a measure of how much thermal energy is in an object  
  b.   the heat used to raise the temperature of steam  
  c.   Liquids can gain thermal energy from their surroundings.  
  d.   All of the above.  
  Hint    
      
  9.What temperature is the boiling point of water on the Celsius scale.  
  a.   212°C  
  b.   100°C  
  c.   0°C  
  d.   32°C  
  Hint    
      
  10.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   volcanoes  
  b.   conduction  
  c.   radiation  
  d.   convection  
  Hint    
      
  11.How is thermal energy transferred from one object to another?  
  a.   Transfer of thermal energy continues until objects are in thermal equilibrium.  
  b.   Heat moves from a warm object to a cold object.  
  c.   radiation  
  d.   All of the above.  
  Hint    
      
  12.What is the term for heat moving through a material or from one material to another?  
  a.   conduction  
  b.   radiation  
  c.   convention  
  d.   temperature  
  Hint    
      
  13.How does a vacuum bottle minimize heat transfer?  
  a.   An inner vacuum in the bottle prevents convection and conduction.  
  b.   Inner glass bottles minimize conduction.  
  c.   Reflective coating inside the bottle minimizes radiation.  
  d.   All of the above.  
  Hint    
      
  14.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.   Reflective coating inside the bottle minimizes radiation.  
  d.   All of the above.  
  Hint    
      
  15.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   temperature  
  b.   radiation  
  c.   convection  
  d.   conduction  
  Hint    

 
   
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