1. Paddy and Zack’s Wave Power Slide Show How waves can be used to make electricity
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5. Look at the power of this wave! All over the world, waves crash agasint beaches, eroding rocks and cliffs. If we could harness the power of the waves, we could stop global warming.
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8. And there is tidal power… Only around 20 sites in the world have been identified as possible tidal power stations. Biomass: Wood was once our main fuel. We burned it to heat our homes and cook our food. Wood still provides a small percentage of the energy we use, but its importance as an energy source is dwindling. Sugar cane is grown in some areas, and can be fermented to make alcohol, which can be burned to generate power. Alternatively, the cane can be crushed and the pulp (called "bagasse") can be burned, to make steam to drive turbines. Other solid wastes, can be burned to provide heat, or used to make steam for a power station. "Bioconversion" uses plant and animal wastes to produce fuels such as methanol, natural gas, and oil. We can use rubbish, animal manure, woodchips, seaweed, corn stalks and other wastes.
![This is how electricity is often made ,[object Object],2.The coal is delivered to power plants. 3.The coal burns to heat the water to make hot air called steam . 4.Inside a generator a big fan called a turbine spins and produces electricity!](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)