More Energy Resources
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Describe the characteristics of using wind power as a renewable energy resource.
• Wind rotates the blades of wind turbines, which turn the generator and produce electricity - there’s no pollution • Running costs are minimal • Many wind turbines are needed to produce a lot of power, so they can spoil the view and create noise pollution for people living nearby
Describe the characteristics of using solar power as a renewable energy resource.
• Solar panels are made from materials that use energy transferred by light to create an electric current • There’s no pollution • Initial costs are high, but there are little running costs • Used mainly to generate electricity on a small scale (e.g. for homes)
Describe the characteristics of using hydro-electricity as a renewable energy resource.
• Rainwater is caught in a big dam and is allowed out through turbines, generating hydro-electricity • There’s no pollution, but it could lead to the destruction of natural habitats for some species • It is reliable and can immediately respond to increased electricity demand • Initial costs are high, but running costs are minimal
Describe the characteristics of using tidal barrages as a renewable energy resource.
• They are big dams built across river estuaries with turbines in them • As the tide comes in, it fills up the estuary - water is then let out through turbines to generate electricity • There’s no pollution, but they limit boat access, can spoil views and alter habitats for wildlife • Tides are reliable as they always happen twice a day - (Initial costs are high, but running costs are minimal)