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Atmosphere

Practice Test
      
  1.Heat flows from __________.  
  a.   low to high temperature  
  b.   same temperature to same temperature  
  c.   medium to high temperature  
  d.   high to low temperature  
  Hint    
      
  2.What's the difference between ozone and the oxygen you breath?  
  a.   Ozone is made of two atoms of oxygen and the oxygen you breath is made of three.  
  b.   One is in gas form and the other is in liquid form.  
  c.   They're made of totally different atoms.  
  d.   Ozone is made of three atoms of oxygen, and the oxygen you breathe is made of two.  
  Hint    
      
  3.Where can CFCs be found?  
  a.   refrigerators  
  b.   air conditioners  
  c.   all answers are correct  
  d.   aerosol sprays  
  Hint    
      
  4.Conduction is the transfer of heat through __________.  
  a.   touch  
  b.   thoughts  
  c.   radiation  
  d.   empty space  
  Hint    
      
  5.How many layers does Earth's atmosphere have?  
  a.   six  
  b.   four  
  c.   five  
  d.   seven  
  Hint    
      
  6.How does the atmosphere benefit Earth?  
  a.   It protects Earth from the Sun's harmful rays.  
  b.   It creates water.  
  c.   It protects Earth from cold air.  
  d.   It protects Earth from other planets.  
  Hint    
      
  7.How is the troposphere warmed?  
  a.   The Sun warms Earth's surface, which warms the air above it.  
  b.   The troposphere absorbs sunlight directly.  
  c.   The stratosphere warms it.  
  d.   The gases in the troposphere absorb heat from the Sun.  
  Hint    
      
  8.What two forms of heat transfer help create a sea breeze?  
  a.   convection and radiation  
  b.   radiation and conduction  
  c.   convection and conduction  
  d.   radiation and recycling  
  Hint    
      
  9.How have humans altered the composition of Earth's atmosphere?  
  a.   They have made the atmospheric temperature drop.  
  b.   They have polluted it with excess ozone.  
  c.   They have polluted it with carbon dioxide gas.  
  d.   They have made the atmospheric pressure drop.  
  Hint    
      
  10.What causes a shooting star?  
  a.   a comet in the stratosphere  
  b.   a meteor in the troposphere  
  c.   a meteor in the mesosphere  
  d.   a comet in the thermosphere  
  Hint    
      
  11.What form of energy transfer heats Earth?  
  a.   radiation  
  b.   conduction  
  c.   convention  
  d.   recycling  
  Hint    
      
  12.What preceded the growth and survival of green plants on Earth?  
  a.   the formation of severe weather  
  b.   the formation of an ozone layer  
  c.   the formation of the solar system  
  d.   human life  
  Hint    
      
  13.Why are the thermosphere and exosphere the warmest of the atmospheric layers?  
  a.   because the underlying mesosphere keeps the warm air there  
  b.   because the air pressure is too great  
  c.   because they are closest to the Sun  
  d.   because of the gases trapped in these layers  
  Hint    
      
  14.Why are there fewer molecules of air up in the mountains?  
  a.   because air is too heavy  
  b.   because air pressure increases as you go higher  
  c.   because air pressure decreases as you go higher  
  d.   because air pressure is the same throughout all layers of the atmosphere  
  Hint    
      
  15.Which layer of the atmosphere contains the ozone layer?  
  a.   exosphere  
  b.   stratosphere  
  c.   thermosphere  
  d.   troposphere  
  Hint    
      
  16.Force exerted on an area is called __________.  
  a.   pressure  
  b.   temperature  
  c.   gravity  
  d.   mass  
  Hint    
      
  17.What would happen if Earth had no atmosphere?  
  a.   Earth would not have nights.  
  b.   The days would be hot and the nights would be cold.  
  c.   Earth would not have days.  
  d.   The days would be cold and the nights would be hot.  
  Hint    
      
  18.What is it called when water changes from gas to liquid?  
  a.   evaporation  
  b.   melting  
  c.   freezing  
  d.   condensation  
  Hint    
      
  19.What is the most abundant gas in Earth's atmosphere?  
  a.   carbon  
  b.   nitrogen  
  c.   hydrogen  
  d.   oxygen  
  Hint    
      
  20.How do CFCs destroy ozone?  
  a.   A CFC combines with a three-atom oxygen molecule.  
  b.   A chlorine atom from a CFC combines with one oxygen from ozone and leaves a two- atom oxygen molecule.  
  c.   A carbon atom from a CFC combines with one oxygen from ozone and leaves a two-atom oxygen molecule.  
  d.   A chlorine atom from a CFC combines with two oxygen atoms from ozone and leaves an oxygen atom.  
  Hint    

 
   
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