Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one non-conventional source of energy.
| Conventional Source of Energy | Non Conventional Source of Energy |
| coal , petroleum, firewood, hydel energy | solar energy, wind energy, nuclear energy, biogas, tidal energy, thermal energy, wave energy |
Methods to Harness Tidal Energy:
• For this, a cylindrical structure is vertically placed in coastal areas where tides come.
• A turbine is fitted at the top of this cylinder.
• When the tide comes, air gushes through the cylinder. This turns the turbine and electricity is generated.
• When the tide goes, air moves in opposite direction. This also turns the turbine and electricity is generated.
