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Energy

                                                  from sea






                                                                                   Ocean thermal
                 Tidal energy(movement of       Wave energy(blowing of           energy(temperature
                 water between high & low        wind over the surface of
                   tides harnesses energy)        sea harnesses energy)        difference of water at the
                                                                               surface & at deeper level)













                                                    Nuclear energy
                                                     (energy obtained by
                                                  conversion of mass of nucleus)







                                 Nuclear fission                             Nuclear fusion






                                                                 two or more light
                    heavy nucleus splits
                    up into two lighter     Ex: Atom bomb        nuclei are fused     Ex:Hydrogen bomb
                         nuclei                                 together to form a
                                                                  single nucleus
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