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.

WE USE ENERGY TO

PRODUCE

ELECTRICITY, IN

TRANSPORT, TO HEAT

THE HOUSES AND TO

GIVE LIGHT.

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).

Solar energy

Wind energy

Water energy

petroleum

IT IS BETTER TO USE ECOLOGICAL SOURCES OF ENERGY, LIKE: THE SUN, WIND, WATER OR EVEN PLANTS, INSTEAD OF NATURAL GAS, COAL AND OIL.

TODAY, IN WATER POWER PLANTS, MECHANICAL ENERGY IS TRANSFORMED INTO ELECTRIC ENERGY.

WIND ENERGY – GIANT WIND TURBINES PRODUCE ENERGY FROM WIND.

THE SUN – SOLAR PANELS PRODUCE ELECTRICITY FROM IT.