generating electricity

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  • Created by: ellamcg
  • Created on: 12-05-16 17:53

1. biomass/bio fuels are...

  • chemical energy- potential energy
  • kinetic energy of biological matter- thermal energy in burning
  • chemical energy- thermal energy in burning
  • thermal energy of biological matter- electrical energy
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2. what reduces the efficiency of a machine?

  • energy losses
  • eating a burger
  • movement
  • walking away from it

3. geothermal energy is...

  • thermal energy from underground- thermal energy of the water
  • electrical energy from underground- thermal energy of the water
  • thermal energy from underground- chemical potential energy
  • chemical potential energy from underground- thermal energy

4. wind energy is...

  • chemical energy of the wind-electrical energy
  • kinetic energy of the wind- thermal energy
  • kinetic energy of the wind- electrical energy
  • gravitational energy of the wind- thermal energy

5. payback time=

  • cost / savings per year
  • cost x savings per year
  • savings per year / cost
  • saved money x income
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