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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.   radiation  
  b.   conduction  
  c.   convention  
  d.   temperature  
  Hint    
      
  2.What can be said of two objects that are in thermal equilibrium?  
  a.   The two objects have the same temperature.  
  b.   Heat energy is in transit between the objects.  
  c.   The objects have the same amount of potential energy.  
  d.   All of the above.  
  Hint    
      
  3.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.   The objects have the same amount of potential energy.  
  d.   All of the above.  
  Hint    
      
  4.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    
      
  5.Why are gasoline engines so inefficient?  
  a.   because most of the heat produced just makes the car warmer and does not work  
  b.   because cars are heavy and therefore difficult to move  
  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    
      
  6.What is heat?  
  a.   the energy transferred from something of higher temperature to lower temperature  
  b.   because cars are heavy and therefore difficult to move  
  c.   because exhaust from gasoline engines damages the environment  
  d.   All of the above.  
  Hint    
      
  7.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.   because exhaust from gasoline engines damages the environment  
  d.   All of the above.  
  Hint    
      
  8.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    
      
  9.What temperature is the boiling point of water on the Celsius scale.  
  a.   100°C  
  b.   0°C  
  c.   212°C  
  d.   32°C  
  Hint    
      
  10.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    
      
  11.What means of heat transfer is thought to be the driving mechanism of plate tectonics?  
  a.   convection  
  b.   radiation  
  c.   conduction  
  d.   volcanoes  
  Hint    
      
  12.What is the term for heat transfer by motion of a heat-carrying medium?  
  a.   conduction  
  b.   radiation  
  c.   convection  
  d.   temperature  
  Hint    
      
  13.What is latent heat?  
  a.   heat that is not measurable  
  b.   the heat used to raise the temperature of steam  
  c.   the amount of energy required to change the physical state of a material  
  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.   Friction in the engine produces heat.  
  d.   All of the above.  
  Hint    
      
  15.Who is credited with the invention of the modern liquid-in-glass thermometer?  
  a.   Galileo  
  b.   Kelvin  
  c.   Fahrenheit  
  d.   Celsius  
  Hint    

 
   
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