We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byMohammed McIntosh
Modified about 1 year ago
© Boardworks Ltd 20061 of 33
© Boardworks Ltd 20062 of 33
© Boardworks Ltd 20063 of 33 How has the use of wind power changed over time? The then and now guide to wind power
© Boardworks Ltd 20064 of 33 Wind power – word association
© Boardworks Ltd 20065 of 33 Wind is the result of the Sun heating the Earth and creating convection currents in the Earth’s atmosphere. What is wind power? Sailing boats and ships, powered by the wind, have been around for thousands of years. modern wind turbines. Using the wind as a source of energy is not a new idea. Windmills, which used the wind’s power to grind corn, were once a common landmark across Britain. These were the forerunners to
© Boardworks Ltd 20066 of 33 Wind turbines have large blades that capture the kinetic energy of the wind. How do wind turbines work? Wind turbines are a source of 'clean energy’ as they do not produce any polluting waste. However, some people consider this source of renewable energy to be noisy and an eyesore. There is also some concern that, if wind turbines are poorly located, they could kill migrating birds. This kinetic energy is used directly to turn the turbine and generate electricity.
© Boardworks Ltd 20067 of 33 One problem with wind turbines is that individually they do not generate a lot of electricity. They are usually needed in large numbers to have a significant impact on electricity production. A group of wind turbines is called a wind farm. Wind farms require space in open areas, but the land beneath them can also be used for farming at the same time. south-east coast of Ireland. Why are wind farms built? Offshore wind farms are located at sea. This wind farm is located 10 kilometres from the
© Boardworks Ltd 20068 of 33 The energy produced by a wind turbine depends on the wind speed. If it is not windy, electricity is not produced, so wind turbines are not a reliable source of electricity. Wind power can be used effectively in remote locations to charge batteries, which can then be used to provide a constant supply of electricity. To be effective, wind turbines need to be located in windy areas. Unfortunately, these upland sites are sometimes areas of natural beauty and some people object to building wind farms in such areas. How are wind turbines used effectively?
© Boardworks Ltd 20069 of 33 Wind power – true or false?
© Boardworks Ltd 200610 of 33 Opinions on wind turbines
© Boardworks Ltd 200611 of 33
© Boardworks Ltd 200612 of 33 How has the use of water power changed over time? The then and now guide to water power
© Boardworks Ltd 200613 of 33 Hydroelectric power is the electricity that is generated from the kinetic energy of moving water. What is hydroelectric power? The power of flowing water has been used for hundreds of years to operate machinery, such as that used to grind corn in mills and factories. However, this was largely replaced by steam power in the Industrial Revolution. Today, hydroelectric power is generated from water flowing in rivers or in man-made installations, were it flows from a high-level reservoir down through a tunnel. Currently, only about 1% of the UK’s electricity is from hydroelectric power.
© Boardworks Ltd 200614 of 33 How is hydroelectricity produced? Major hydroelectric schemes involve building a dam across the end of a river valley to form a reservoir. This can be done high up in mountainous areas. 1,042 megawatts. Hydroelectric power stations are a very reliable source of electricity and are able to start up production quickly. This is the Glen Canyon dam in Arizona, USA. It has eight generating units, which have an electrical output of up to
© Boardworks Ltd 200615 of 33 How does a hydroelectric dam work?
© Boardworks Ltd 200616 of 33 Large-scale hydroelectric power stations must be sited in high, mountainous areas. Hydroelectric power schemes also cost a lot of money and take a long time to build. However, they do last a long time and are a reliable source of large amounts of electricity. How is hydroelectricity used effectively? Damming a river causes the river valley to flood, which can mean that local villages and houses are destroyed. In the UK, hydroelectricity is generated in Scotland and North Wales. The number of environmentally acceptable sites is limited but several small-scale hydroelectric schemes to use the power of our streams and rivers are also in development.
© Boardworks Ltd 200617 of 33 Pros and cons of hydroelectric power
© Boardworks Ltd 200618 of 33 Reporting of hydroelectric power
© Boardworks Ltd 200619 of 33
© Boardworks Ltd 200620 of 33 What is wave power? Wave power involves capturing the kinetic energy of the oceans and converting it into electricity. Wave power is actually a form of solar energy that is transferred to water by the wind. Effective sites for harnessing wave power must have strong waves most of the time, to ensure that enough electricity will be produced. These sites can be on the shore or in deeper, offshore waters. The rise and fall of waves has the potential to be a an unlimited source of renewable energy.
© Boardworks Ltd 200621 of 33 There are several types of wave power machines that are able to capture wave energy and convert it into electricity. How is wave power used? The ‘Limpet’ (Land-Installed Marine-Powered Energy Transformer) on Islay, Scotland, is the world’s first commercial wave energy device. The low profile of this shoreline unit is designed so that it does not affect coastal views. The Limpet device uses an oscillating column of air and water to generate a maximum output of 500 kilowatts of electricity.
© Boardworks Ltd 200622 of 33 How does wave power work?
© Boardworks Ltd 200623 of 33 Wave power could make a significant contribution to our energy needs but is still in the early stages of development. Another proposed machine is Salter’s duck, which could use wave power efficiently. However, only long chains of these units would produce useful amounts of electricity and these cannot be sited near boats. How else can wave power be used? A deep-water device tested in Orkney, Scotland is the Pelamis Wave Energy Converter. The first “wave farm” is planned for the coast of Portugal. What are the advantages and disadvantages of wave power? direction of waves ducks move up and down
© Boardworks Ltd 200624 of 33 Wave power – true or false?
© Boardworks Ltd 200625 of 33
© Boardworks Ltd 200626 of 33 Tidal power involves harnessing the kinetic energy of tidal waters, which flow twice a day. What is tidal power? The tide is the regular rising and falling of the ocean's surface due to the gravitational pull of the Moon, and to a lesser extent the Sun. Tidal power involves building a dam across a river estuary. Water is only able to flow in and out of the estuary through turbines in the dam, which harness the tidal energy and convert it into electricity. Tidal power stations can provide a lot of electricity but building them is expensive and may lead to loss of wildlife habitats.
© Boardworks Ltd 200627 of 33 How is tidal power used?
© Boardworks Ltd 200628 of 33 Tidal power is a predictable and reliable source of electricity. However, the difference between high and low tides needs to be at least 5 metres to generate practical amounts of electricity. How can tidal power be used effectively? Tidal power only produces electricity when the tide flows, about 10 hours a day, and should be used with other sources. Monthly variations in the height of the tide also affect how much electricity is produced. Worldwide, only around 20 sites have been identified as suitable for tidal power stations. The UK has eight possible sites but, as yet, we do not get electricity from tidal power.
© Boardworks Ltd 200629 of 33 Pros and cons of tidal power
© Boardworks Ltd 200630 of 33
© Boardworks Ltd 200631 of 33 hydroelectric power – Electricity that is produced from the kinetic energy of falling water. offshore wind farm – A wind farm that is located at sea. tidal power – Electricity that is produced from the rise and fall of the tides. wave power – Electricity that is produced from the up and down motion of waves. wind farm – A collection of wind turbines. wind turbine – A machine that uses large blades to capture the kinetic energy of the wind and convert it into electricity. wind power – Electricity that is produced from the kinetic energy of moving air. Glossary
© Boardworks Ltd 200632 of 33 Anagrams
© Boardworks Ltd 200633 of 33 Multiple-choice quiz
© Boardworks Ltd of 33. © Boardworks Ltd of 33 Wind power – true or false?
© Boardworks Ltd of 9. © Boardworks Ltd of 9 How has the use of water power changed over time? The then and now guide to water power.
© Boardworks Ltd of 44 KS4 Physics Renewable Energy.
TIDAL ENERGY SUBMITTED TO Mrs. DEEPTI KHATRI HOD(mechanical ) SUBMITTED by SOHAIL KHAN (09EMAME052)
BTEC First Engineering Unit 1: The Engineered World Renewable sources of energy BTEC First Engineering The world needs more and more energy every day Traditional.
Why do we need electrical energy? We need electrical energy to power the appliances in our homes. Electrical energy powers factories in order to make.
Water Energy What is Water energy? Water energy is a kind of energy which is created by moving water. Water energy comes indirectly from solar energy.
1 of 6© Boardworks Ltd 2013 Energy Resources. 2 of 6© Boardworks Ltd 2013 What are energy resources? An energy resource is anything that can be used to.
Energy Sources. HMMMM.... What do you think nonrenewable resources are? Break it down... Nonrenewable? Resource?
Jeannie Jacullo. What Is It? Tidal Power is a process that harnesses the energy of tides while Wave power harnesses the energy of Ocean Waves. There is.
Learning Goals: I can name the different sources of renewable and non-renewable energy production and how power is generated. I can assess some of the.
Natural Resources A natural resource is a feature of Earth that benefits people. Earth’s natural material resources are things like air, fresh water,
Hydroelectric energy. What is it? Hydroelectric energy is generated by the flow of water and like most other renewable energy sources, it is actually.
Science A Physics – P1 Science A Physics – P1 Topic 1: Electricity Generation – 2a Topic 1: Electricity Generation – 2a.
Tidal Power (energy from the sea) By: Morgan Ross.
PHYSICS – Energy Resources. LEARNING OBJECTIVES Energy resources Core Describe how electricity or other useful forms of energy may be obtained from:
Geothermal Energy – energy from the Earth 1.Cold water is pumped below the ground. 2.Hot rocks heat the water, turning it into steam. 3.The steam is used.
Power Generation 1. Tidal 2. Hydro 3. Wind 4. Solar 5. Nuclear 6. Fuel fossils 7. Geothermal.
Tidal & Wave Power Andrew Chavous & Carlo Raiteri.
Wind Power Plants The Babylonians and Chinese were using wind power to pump water for irrigating crops 4,000 years ago, and sailing boats were around long.
Alternative Energy. Hydroelectric Power Running water, either directly from a fast flowing river, or usually from a river that has been dammed, turns.
Hydro-Electric Power. Worldwide, Hydro-Electric Power plants produce about 24 percent of the world's electricity and supply more than 1 billion people.
Water Energy Energy – It’s Everywhere!. 2 Water Energy Solar energy creates the water cycle (see next slide). The water cycle is a renewable and sustainable.
Lesson 9: Renewable Energy Sources. MUST understand that some renewable sources of energy drive a turbine directly SHOULD understand that while technology.
Miss Nelson SCIENCE ~ CHAPTER 12 ENERGY AND MATERIAL RESOURCES.
Introduction: Energy Unit. Energy Unit TEKS Objectives: TEK: Describe and compare renewable and non-renewable energy sources. Big Idea: Learn about and.
EARTH’S NATURAL RESOURCES CHAPTER 4 NOTES. RENEWABLE AND NONRENEWABLE RESOURCES Renewable resources can be replenished over a fairly short period of time.
1. Abstract Introduction Advantages and Disadvantages. Wind Energy Applications. How does it work? 2.
Tidal Energy Ryan, Saad, Sufie Energy Resources Assignment SPH 3U.
Energy Sources for North Carolina. Fossil Fuels Coal, oil, and gas Formed from fossilized remains of prehistoric plants and animals Provides 95% of the.
© Boardworks Ltd of 30 These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page. This icon indicates that.
Alternative Energy 101 Yuki Bailey Vivian Eng Kristen Lee Chloe Liu Chemistry Kaya 2:00.
P1.4 Methods we use to generate electricity
Renewable Energy IB SL. Does the UK need alternative energy supplies? energy sources (UK 2003)
Tidal energy Austin Rogacki. Wave energy Wave energy, it is efficient and uses only the natural motion of the water. It works by pushing air in and out.
Alternative Energy Resources Alternative energy is energy that is not made from burning fossil fuels.
Wind Energy/Power By John Onukogu. Wind power Defined Briefly The use of wind generators to create electricity for either private or public energy consumption.
How would you define energy? Energy: a force of power that makes things happen.
Tidal Energy By: Melissa Pskowski Nicole Liguori Nicole Liguori.
Generating Electricity Physics 1 GCSE ScienceChapter 10.
Energy and Electricity. The Cost of Electricity Electricity is measured in units called “kilowatt hours” (kWh). For example… A 3kW fire left on for 1.
Tidal/Wave By: Jillian Marsh Alexis Golden Brandon Golden Alex Comins.
Tidal Energy Presented by: Courtney Winter and Quinn Foley.
Lesson12: Renewable energy Resources Learning objective: To learn about different sources of renewable energy Starter:
Renewable energy How can we also get energy from rubbish? Renewable energy doesn’t run out. It comes from things like the sun,
Introduction We have used running water as an energy source for thousands of years, mainly to grind corn.The first house in the world to be lit by hydroelectricity.
© Oxford University Press 2011 IP Hydroelectric power station Hydroelectric power station.
© 2017 SlidePlayer.com Inc. All rights reserved.