Fossil fuels are ruining the planet. Fossil fuels are oil, gas and coal made from deceased animal fossils. Greenhouse gasses (such as CO2 and methane) are being released and polluting the air: creating climate change. Climate change makes the world warmer and melts the polar ice caps which makes the sea level rise. Fossil fuels will eventually run out and then there will be no electricity left unless we use renewable energy sources like tidal energy. Renewable energy can help save the planet from climate change.
Tidal energy is a renewable energy source. A way to create tidal energy is through a tidal barrage. A tidal barrage is a dam-like structure used to create electricity from a body of water. First of all, the water goes through the sluice gates into the barrage: the water then goes into the basin and spins the turbine to make electricity. The water then goes back in the sea. Tidal power stations are about 85% efficient - coal power stations are only 30% efficient- and they are cheap: 59p per kWh.
Stream farms are another source of tidal energy. Tidal stream farms are generators put in the same place used for making electricity, similar to a wind turbine. They can produce about 6 W per square metre; they only cost 29 pence per kWh. In a stream farm, turbines are set out like an underwater wind farm. Stream farms and barrages both last for about 100 years. Click on the link below to find out more....
Tidal energy is a way to power our homes without harming the environment and polluting the air. It would be good if everyone switched to this source of energy instead of burning fossil fuels.
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