E
F
Approximately one in five US homeS will be uSing one of theSe
formS of energy within twenty yearS.
One attraction of theSe formS of energy in general iS the
relatively low production coStS.
Questions 3-4
ChooSe the CorreCt letter
A, B, C or D.
3 Geothermal energy iS produced by
heating the air below the Surface of the ground.
employing the force of falling water.
extracting water or Steam from beneath the earth´S Surface.
uSing the earth´S natural electricity.
4 Which form of alternative energy doeS not involve the uSe of turbineS?
wind energy
geothermal energy
tidal energy
fuel cell energy
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