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Atmosphere

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

 
   
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