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Review Week 2

  1.  
    Nuclear power comes from breaking down which substance?
  2.  
    How many half-lives does it take for an atomic nucleus to be safe?
    A. 10 B. 2 C. 12 D. 8 E. 5
  3.  
    What is the leading renewable energy source worldwide?
    A. biomass B. hydroelectric C. solar D. geothermal E. wind
  4.  
    What are two types of biofuels that can be used as substitutes for conventional petroleum products?
  5.  
    What are some drawbacks of using photovoltaic solar energy?
  6.  
    What are some environmental problems with the hydraulic fracking process?
  7.  
    What are the three types of solar energy?
Answer Key
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Review Week 2 (Answer Key)

  1.  
    Nuclear power comes from breaking down which substance?
    a form of ore called uranium 235
  2.  
    How many half-lives does it take for an atomic nucleus to be safe?
    A. 10 B. 2 C. 12 D. 8 E. 5
  3.  
    What is the leading renewable energy source worldwide?
    A. biomass B. hydroelectric C. solar D. geothermal E. wind
  4.  
    What are two types of biofuels that can be used as substitutes for conventional petroleum products?
    ethanol and biodiesel
  5.  
    What are some drawbacks of using photovoltaic solar energy?
    limitation of sunlight, limited lifespan of PV cells, expensive, and desert destruction
  6.  
    What are some environmental problems with the hydraulic fracking process?
    water contamination, destruction of habitat, volatile organic compounds/natural gas may leak out, earthquakes, and water is used as a resource
  7.  
    What are the three types of solar energy?
    photovoltaic, active, and passive

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