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  • 1. THIS PRESENTATION IS ABOUT ENERGY AND ABOUT THE REASONS WHY WE NEED IT. IT SHOWS TWO GROUPS OF ENERGY, ECOLOGICAL SOURCES OF IT AND THE USE OF THEM.
  • 2. WE USE ENERGY TO PRODUCE ELECTRICITY, IN TRANSPORT, TO HEAT THE HOUSES AND TO GIVE LIGHT.
  • 3. THE SOURCES OF ENERGY ARE DIVIDED INTO TWO GROUPS: RENEWABLE (WIND ENERGY, WATER ENERGY, SOLAR ENERGY, GEOTHERMAL ENERGY AND BIOMASS) AND UNRENEWABLE (ENERGY FROM COAL, NATURAL GAS, OIL AND NUCLEAR ENERGY) .
  • 4. Solar energy Wind energy
  • 5. Water energy petroleum
  • 6. IT IS BETTER TO USE ECOLOGICAL SOURCES OF ENERGY, LIKE: THE SUN, WIND, WATER OR EVEN PLANTS, INSTEAD OF NATURAL GAS, COAL AND OIL.
  • 7. TODAY, IN WATER POWER PLANTS, MECHANICAL ENERGY IS TRANSFORMED INTO ELECTRIC ENERGY .
  • 8. WIND ENERGY – GIANT WIND TURBINES PRODUCE ENERGY FROM WIND .
  • 9. THE SUN – SOLAR PANELS PRODUCE ELECTRICITY FROM IT.
  • 10.