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Atmosphere

Practice Test
      
  1.What two forms of heat transfer help create a sea breeze?  
  a.   radiation and conduction  
  b.   convection and conduction  
  c.   radiation and recycling  
  d.   convection and radiation  
  Hint    
      
  2.How do CFCs destroy ozone?  
  a.   A chlorine atom from a CFC combines with two oxygen atoms from ozone and leaves an oxygen atom.  
  b.   A carbon atom from a CFC combines with one oxygen from ozone and leaves a two-atom oxygen molecule.  
  c.   A CFC combines with a three-atom oxygen molecule.  
  d.   A chlorine atom from a CFC combines with one oxygen from ozone and leaves a two- atom oxygen molecule.  
  Hint    
      
  3.What causes a shooting star?  
  a.   a meteor in the troposphere  
  b.   a meteor in the mesosphere  
  c.   a comet in the stratosphere  
  d.   a comet in the thermosphere  
  Hint    
      
  4.How many layers does Earth's atmosphere have?  
  a.   four  
  b.   five  
  c.   seven  
  d.   six  
  Hint    
      
  5.Heat flows from __________.  
  a.   same temperature to same temperature  
  b.   medium to high temperature  
  c.   low to high temperature  
  d.   high to low temperature  
  Hint    
      
  6.Which layer of the atmosphere is named after its high temperature?  
  a.   thermosphere  
  b.   mesosphere  
  c.   troposphere  
  d.   stratosphere  
  Hint    
      
  7.How does the atmosphere benefit Earth?  
  a.   It creates water.  
  b.   It protects Earth from other planets.  
  c.   It protects Earth from cold air.  
  d.   It protects Earth from the Sun's harmful rays.  
  Hint    
      
  8.Where can CFCs be found?  
  a.   aerosol sprays  
  b.   all answers are correct  
  c.   air conditioners  
  d.   refrigerators  
  Hint    
      
  9.What is the outermost layer of the atmosphere called?  
  a.   mesosphere  
  b.   exosphere  
  c.   thermosphere  
  d.   stratosphere  
  Hint    
      
  10.What is it called when water changes from gas to liquid?  
  a.   melting  
  b.   freezing  
  c.   condensation  
  d.   evaporation  
  Hint    
      
  11.What have CFCs done to Earth and its atmosphere?  
  a.   They have caused the number of cancer cases to rise.  
  b.   all answers are correct  
  c.   They have created a hole in the ozone layer.  
  d.   They have caused more ultraviolet radiation to reach Earth.  
  Hint    
      
  12.What form of energy transfer heats Earth?  
  a.   recycling  
  b.   radiation  
  c.   convention  
  d.   conduction  
  Hint    
      
  13.What is the most abundant gas in Earth's atmosphere?  
  a.   carbon  
  b.   nitrogen  
  c.   oxygen  
  d.   hydrogen  
  Hint    
      
  14.The hydrosphere, which consists of all of Earth's water, is maintained __________.  
  a.   by addition of water to the atmosphere  
  b.   by the clouds in the atmosphere  
  c.   by recycling water in the atmosphere  
  d.   by removing water from the atmosphere  
  Hint    
      
  15.Within which layer of the atmosphere do you find rain, snow, and clouds?  
  a.   mesosphere  
  b.   troposphere  
  c.   stratosphere  
  d.   thermosphere  
  Hint    
      
  16.What would happen if Earth had no atmosphere?  
  a.   Earth would not have days.  
  b.   The days would be cold and the nights would be hot.  
  c.   The days would be hot and the nights would be cold.  
  d.   Earth would not have nights.  
  Hint    
      
  17.How is the troposphere warmed?  
  a.   The gases in the troposphere absorb heat from the Sun.  
  b.   The Sun warms Earth's surface, which warms the air above it.  
  c.   The troposphere absorbs sunlight directly.  
  d.   The stratosphere warms it.  
  Hint    
      
  18.How have humans altered the composition of Earth's atmosphere?  
  a.   They have polluted it with excess ozone.  
  b.   They have polluted it with carbon dioxide gas.  
  c.   They have made the atmospheric pressure drop.  
  d.   They have made the atmospheric temperature drop.  
  Hint    
      
  19.Conduction is the transfer of heat through __________.  
  a.   empty space  
  b.   radiation  
  c.   touch  
  d.   thoughts  
  Hint    
      
  20.Force exerted on an area is called __________.  
  a.   pressure  
  b.   gravity  
  c.   mass  
  d.   temperature  
  Hint    

 
   
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