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EnergiesPrimary energy• Energy comes from anatural source. They areoriginated by the Sun, theEarth or the Moon.• Renewable energies comefrom sources that never runout.• Non-renewable energiescome from sources thatcould run out.Secondary energy• Energy comes from thetransformation of aprimary energy.• They are a more convenientfor transport and use2
NonNon--renewable energiesrenewable energies1) Nuclear energy:Earth storageCoal2) Fossil energy: Solar storageNatural Gas Crude Oil3
Renewable energies 1Renewable energies 11) Direct Solar energyThermal usePhotovoltaic use4
Renewable energies 2Renewable energies 22) Other Solar related energiesWind powerWater powerBio energy5
Renewable energies 3Renewable energies 34) Solar and Moon energy3) Earth energyGeothermal powerTide and waves power6
ElectricityElectricity2) As a Secondary energy1) As a Primary energyLightning TransportUse7
Electricity pathElectricity pathPrimary Energy sourcesSecondary energyconversionElectricity appliancesElectricitytransport8