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5 Written questions

5 Matching questions

  1. effluent sewerage
  2. flex-fuel vehicle
  3. photovoltaic cells
  4. critical mass
  5. fuel cell
  1. a the minimum mass of a fissionable isotope that provides the number of neutrons needed to sustain a chain reaction
  2. b can burn variable mixtures of ethanol and gasoline
  3. c a low-cost alternative sewage treatment for cities in poor countries that combines some features of septic systems and centralized municipal teatment systems
  4. d Cells, usually made of specially-treated silicon, that transfer solar energy from the sun to electrical energy
  5. e produces electricity chemically by combining hydrogen fuel with oxygen from air

5 Multiple choice questions

  1. A mixture of hydrocarbon gases that occur with petroleum deposits
  2. Products of secondary atmospheric reactions driven by solar energy; causes smog.
  3. small generator to provide economical power for a single home that is near a perennial stream or river
  4. A diesel-equivalent, processed fuel derived from biological sources (such as vegetable oils), that can be used in unmodified diesel-engine vehicles.
  5. the process by which water changes from liquid form to an atmospheric gas

5 True/False questions

  1. heat islandPhenomenon describing urban and suburban tempuratures that are 2 to 10 degrees F(1 to 6 degrees C)hotter than nearby rural areas.

          

  2. secondary treatmentTreating wastewater biologically, by using microorganisms to decompose the suspended organic material; occurs after primary treatment

          

  3. nitrogen oxides(source: auto exhaust) (effects: acidification of lakes, respiratory irritation, leads to smog & ozone) (Equation for acid formation: NO + O2 = NO2 + H2O = HNO3) (Reduction: catalytic converter)

          

  4. fuel assemblya population explosion of certain marine dinoflagellates that causes the water to turn a red or red-brown color and to contain poisonous alkaloids produced by the dinoflagellates

          

  5. nuclear powera nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy