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In the future, it’s essential that we change to a more sustainable energy resource as the ocean covers 70% of the earth’s surface then we should think of this as an advantage. Wave power can help fight climate change and could reduce carbon dioxide massively in just an annual year. Wave energy is an energy resource that is provided by nature and a great power source as we don’t disturb the nature of the earth. Wave power is economical as we let nature shine to make our energy.

Wave power/energy is from waves and is made into electricity for power. This is a very environmental source of power as waves are made naturally from wind being pushed up again the surface of the water. Depending on how high the wave is the more power you can get. Wave devices or wave turbines are placed under the sea to record how high and strong a wave is. Some of these devices are placed 15ft (4.5m) under ground, the deeper the sea level is the more power we can get. This is great power usage as we are letting nature provide our energy and we aren’t disturbing the world. Costs are a big part of energy as everyone is always looking for ways to save money nowadays. Fossil fuel energy has an average cost of 11 cents per kilo-watt. In an annual year fossil fuel energy costs $1, 235.52 for every average home. Wave power would cost on 4 cents per kilo watt. The average usage per household for an annual year is 1, 1232 kilo-watts. That means that the annual cost of a wave energized home would be $449.28 which is a big difference compared to fossil fuel energy which is around $1,235. Another thing that is really good about wave power is that how many meters the wave is. What the height of the wave is, you square the measurement of the wave (2m wave=2x2=4). So a 2m wave has 4 times the height and power of a 1m wave. When it’s a windy day, the sea becomes more powerful as the wind blows harder and stronger, so the sea becomes higher, longer and faster which means that more power is created. Wave power is more predictable then solar or wind power and is more accurate as the forecast can be in 5 days before the wave/s actually come. This is a great part of wave power as you know exactly how high and strong the waves would be in 5 days advance. Wave power could displace 1-2 billion tonnes of carbon dioxide which means that wave power can play a part in the Earth’s future to fight climate change and other issues involving carbon dioxide. Wave power is still being studied but in the future wave power could become the natural energy resource although so far they have found that wave power has a lot of potential. In the Bay of Fundy, which is in Northern America, have some of the most powerful and highest waves on the earth. Some waves can get up to 15 meters in height which means that over 100 billion tonnes of water passes through the Bay of Fundy. Wave energy can be located in many places which is why it’s such a great power resource to use with many success stories located around the earth. On an average basis one person releases 5 tonnes of CO2 everyday and in just one year, all Australian families, together we make 41, 370, 331, 875 tonnes of CO2. Wave energy could show some huge potential in the United Sates of America, South America, Western Europe, South Africa, Australia and New Zealand as these are places where some waves have the most power, potential and height. Wave turbines are what generate the waves into energy for our homes. The propeller is what spins to make energy, the propeller is spun by the currents of the water. Wave turbines can generate 80% of the energy from a wave into electricity. Wave turbines are just like wind turbines although they are a lot stronger and are made specifically for wave power usage. Wave turbines are underwater and are what generate wave currents into energy without harming the environment. Wave turbines have to survive the power and pressure of lots of


Underwater turbines

ocean events but mostly rough currents from oceans and wetlands. Barrages are like gates which stop water coming through them, they can also open and allow water to come through. Barrages are what control how much water and currents go to the wave turbines. This if the first step of how we get electricity from waves. Firstly barrages let water run through from dams, lakes, oceans and other wetlands. Next, wave turbines then capture the energy, power and force of the wave and generate it into energy. Just like other turbines, wave turbines have 3 basic parts to it. They are the rotor blades, shaft and generator. The rotor blades are just like propellers and basically the exact same thing, they start off the procedure of making energy from a turbine by being pushed around by the currents in the water. The shaft is what is connected to both the generator and the propellers. The shaft spins when the propellers spin and while the propeller spins it transferrers the energy to shaft. Then the shaft passes onto the generator which is on the opposite side of the propellers. The generator is what makes a wave’s energy into electricity. The generator has lots and needs lots of magnets and wires in it to make electricity. If a 4 foot (120cm) wave that was 1 mile long (1.6km) hit a coast, makes over 35,000 horsepower. 1 horsepower is how much power 1 average horse has in this case, 35,000 horses’ power is put altogether and that’s how much power a 120cm high and 2.6km long wave can make.

BIBLIOGRAPHY: People: Mrs Gail Merritt, Mr Chris Wyatt, Taia Van Rheede, Michael Savic (Dad), Alla (Mum) and Paula Job. Websites: 1st of August: http://www.pelamiswave.com/wave-energy/what-is-wave-energy 6th of August: http://www.bionomicfuel.com/benefits-of-underwater-energy-sources/ http://www.pelamiswave.com/wave-energy/what-is-wave-energy 7th of August: http://www.bionomicfuel.com/benefits-of-underwater-energy-sources/


12th of August: http://www.carnegiewave.com/index.php?url=/ceto/global-wave-energy http://www.bionomicfuel.com/benefits-of-underwater-energy-sources/ 14th of August: http://www.bionomicfuel.com/benefits-of-underwater-energy-sources/ http://science.howstuffworks.com/environmental/green-science/wind-power1.htm http://www.guardian.co.uk/environment/2007/sep/17/alternativeenergy.uknews http://www.oceanenergycouncil.com/index.php/Wave-Energy/Wave-Energy.html

By Maddie Savic 6GM, 2011


Maddie wave energy proposal