1. Lesson Starter 1.Think of five ways you could reduce your electricity use in your home

2. Renewable energy Renewable Energy https://www.twigonglow.com/film/factpack-global-electricity-supply-1547/

3. Lesson Starter What was the energy conversion which takes place in a wind turbine? In the turbine experiment what was the variable you were changing? What were the variables you were keeping constant? Why is it important to change only one variable in an experiment?

4. Lesson Starter 1.Write down what you think are the energy changes that would take place in a hydroelectric power station 2.Can you think of an advantage of using hydroelectric power? 3.Can you think of a disadvantage of using hydroelectric power?

5. Renewable energy Renewable Energy is a term used to describe natural resources that are available to use. These resources ‘renew’ themselves when we use them. They will not run out. https://www.twigonglow.co m/search/?search=renewa ble+energy&search-btn=https://www.twigonglow.co m/search/?search=renewa ble+energy&search-btn

6. Show me boards Write down as many examples of renewable energy that you can think of.

7. Wind energy Tidal energy Solar energy Geothermal energy Biomass energy Hydroelectric power

8. Learning Intentions To learn about the use of hydro- electricity as a renewable energy source Success Criteria 1.State the energy conversion that occurs in hydro-electric power. 2.State two advantages of using hydro- electric power. 3.State two disadvantage of using hydro-electric power.

9. Have you ever put a cold tap on full and put your hand under it? You will feel an incredible amount of pressure! Think of the energy that can be used from turning on thousands of taps!! Hydro-Electricity harnesses the energy water gains as it flows.

10. How it works Dams are built so that water levels can be raised. By doing this the water gains potential energy. https://www.youtube.com/watch?v=Pj4dZM4SIls

11. Energy conversion in hydro- electric power As the water flows the stored potential energy is converted into kinetic energy which is used to turn large turbines, producing electrical energy. Potential kinetic electrical energy energy energy

13. Show me boards Write down any advantages and disadvantages of hydro- electric power

14. Advantages 1.If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high. 2.Dams are designed to last many decades and so can contribute to the generation of electricity for many years / decades. 3.The loch that forms behind the dam can be used for water sports. 4.The loch's water can be used for irrigation purposes. 5.The build up of water in the loch means that energy can be stored until needed, when the water is released to produce electricity. 6.When in use, electricity produced by dam systems do not produce green house gases. They do not pollute the atmosphere.

15. Disadvantages 1.Dams are extremely expensive to build and must be built to a very high standard. 2.The flooding of large areas of land means that the natural environment is destroyed. People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses. 3.The building of large dams can cause serious geological damage. For example, the building of the Hoover Dam in the USA triggered a number of earth quakes and has depressed the earth’s surface at its location. 4. Although modern planning and design of dams is good, in the past old dams have been known to be breached (the dam gives under the weight of water in the lake). This has led to deaths and flooding.

16. world’s largest hydropower project and most notorious dam. number of people displaced = more than 1.2 million number of cities and towns flooded = 13 cities, 140 towns, 1,350 villages length of reservoir = more than 600 kilometres Cost = £22.5 billon Energy= same energy production of 15 nuclear reactors Three Gorges Dam

17. Lesson Starter 1.Write down then energy conversion which takes place in a solar panel. 2.State one advantage of using solar energy 3.State one disadvantage of using solar energy

18. Learning Intentions To learn about the use of wind power as a renewable source of energy Success Criteria 1.State the energy conversion that occurs in a wind turbine. 2.State an advantage of using wind power 3.State a disadvantage of using wind power 4.Build your own wind turbine and test which blades produce the greatest electricity.

19. What do you think the energy conversion is that takes place in a wind turbine? Kinetic energy (wind) electrical energy Energy conversion

21. Turbine Experiment Aim: To find out which design of turbine produces the greatest electricity using wind energy. Method: Set up your apparatus and add the turbine designs one at a time. Use the hairdryer to produce the wind energy. Note the electricity produced and record it in your table.

22. Turbine experiment Copy down this table into the back of your jotter before you start the experiment. Record your results as you go along Blade colourElectricity produced (DCV) Black1.1 Blue0.03 Red1.8

23. Variables In an experiment you only change one variable to ensure the experiment is fair. In this experiment what is the one variable we are changing? The blade design What variable must we keep constant between testing the blade designs? Distance that the hairdryer is away from the blade Power of the hairdryer

24. Show me boards Write down any advantages and disadvantages of wind energy

25. Advantages Clean and quiet Cheap, once set up Low maintenance Disadvantages Expensive equipment An “eyesore”? May harm wildlife- loss of habitat, migrating birds

26. Lesson Starter 1.State the energy changes that take place in hydroelectric power 2.State and advantage of using hydroelectric power 3.State a disadvantage of using hydroelectric power

27. Solar energy

28. Learning Intentions To learn about the use of solar power as a renewable energy sources Success Criteria 1.State the energy conversion that occurs in a solar panel. 2.State an advantage of using solar energy 3.State a disadvantage of using solar energy. 4.Carry out an experiment and write a report to examine how effective solar panels are.

29. Energy conversion What is the energy conversion which takes place in a solar panel? Light energyelectrical energy

31. Lesson Starter What is the energy conversion which takes place in a solar panel? Write down two advantages of using wind energy? Write down two disadvantages of using wind energy?

32. Solar energy experiment 1 You are going to investigate the units of electricity solar energy can produce. 1.Does the units of electricity produce depend of the distance the light energy is from the panels? Distance of light source from solar panels (cm) Electricity produced (DCV) 5 10 15 20

33. Solar energy experiment 1 What was the variable you were changing? What variables had to remain constant? Do you think the results are reliable? What may have affected the results?

34. Solar energy experiment 2 You are going to investigate the units of electricity solar energy can produce. 1.Does the units of electricity produced dependent on the percentage of panels exposed to the sunlight? Percentage of solar panel covered (%) Electricity produced (DCV) 0 25 50 75

35. Solar energy experiment 2 What was the variable you were changing? What variables had to remain constant? Draw a graph of your results. From your graph is there a linear relationship?

36. Show me boards Write down any advantages and disadvantages of solar energy

37. Advantages The power source of the sun is absolutely free. Produces no pollution. The technological advancements in solar energy systems have made them extremely cost effective. Most systems do not require any maintenance during their lifespan, which means you never have to put money into them.

38. Disadvantages 1.Solar energy can only be harnessed when it is daytime and sunny. 2.Solar panels and cells are relatively expensive to manufacture although prices are falling rapidly 3.In countries such as the UK, the unreliable climate means that solar energy is also unreliable as a source of energy. Cloudy skies reduce its effectiveness. 4.Some people don’t like the look of solar panels.

39. Lesson Starter What is the energy conversion which takes place in a solar panel? Write down two advantages of using solar energy. Write down two disadvantages of using solar energy

40. Learning Intentions To learn about the use of hydro- electricity as a renewable energy sources Success Criteria 1.State the energy conversion that occurs in hydro-electric power. 2.State two advantages of using hydro- electric power. 3.State two disadvantage of using hydro-electric power.

41. Lesson Starter 1.State the energy conversion that occurs in wind power. 2.State two advantages of using wind power. 3.State two disadvantage of using wind power.

42. Tidal energy- turbines

43. Tidal energy- barrages Tidal Barrages - A tidal barrage works like a dam. When the tide goes high, the reservoir fills up. When the tide drops the dam lets the water out. In both directions the moving water can spin the blades of turbines to create electricity.

44. How it works! The tide moves a huge amount of water twice each day, and harnessing it could provide a great deal of energy - around 20% of Britain's needs. Although the energy supply is reliable and plentiful, converting it into useful electrical power is not easy. There are eight main sites around Britain where tidal power stations could usefully be built, including the Severn, Dee, Solway and Humber estuaries. Only around 20 sites in the world have been identified as possible tidal power stations

45. Disadvantages A barrage across an estuary is very expensive to build, and affects a very wide area - the environment is changed for many miles upstream and downstream. Many birds rely on the tide uncovering the mud flats so that they can feed. Fish can't migrate, unless "fish ladders" are installed. Only provides power for around 10 hours each day, when the tide is actually moving in or out. There are few suitable sites for tidal barrages

46. Advantages Once you've built it, tidal power is free. It produces no greenhouse gases or other waste. It needs no fuel. It produces electricity reliably. Not expensive to maintain. Tides are totally predictable. Offshore turbines and vertical-axis turbines are not ruinously expensive to build and do not have a large environmental impact.

47. Wave energy Advantages The energy is free - no fuel needed, no waste produced. Not expensive to operate and maintain. Can produce a great deal of energy. Disadvantages Depends on the waves - sometimes you'll get loads of energy, sometimes almost nothing. Needs a suitable site, where waves are consistently strong. Some designs are noisy. But then again, so are waves, so any noise is unlikely to be a problem. Must be able to withstand very rough weather.

48. The Scottish Government has set ambitious targets for electricity generation from wave and tidal to contribute to the target set for 100% of Scotland's electricity requirements to come from renewable sources by 2020

49. Lesson Starter 1.What do you think are the advantages of using biofuel? 2.What do you think are the disadvantages of using biofuel?

50. Geothermal energy The earth’s core is incredibly hot! We can use this heat energy to heat up water. This hot water produces steam that can turn turbines.

51. Geothermal Discuss with your neighbour what you believe are the energy changes within a geothermal plant. Write them down.

53. Energy Changes The energy change that takes place in a geothermal power station are: Heat energy Kinetic energyElectrical energy From earth Steam to turn turbines Generated in the turbines

54. Advantages:  Renewable  No fuel costs  No polluting gases Disadvantages:  not suitable everywhere  An “eyesore”?

55. Revision http://www.childrensuniversity.manchester. ac.uk/interactives/science/energy/advanta ges/http://www.childrensuniversity.manchester. ac.uk/interactives/science/energy/advanta ges/

56. Lesson Starter 1.Describe how tidal power is used to create electricity? 2.State the energy conversion which take place in a geothermal power station 3.What can biodiesel be used as a substitute for? What is biodiesel made from?

57. Bio-fuel

59. BioDiesel is a renewable fuel that can be used instead of diesel fuel made from petroleum. BioDiesel can be made from vegetable oils, animal fats, or greases. Most BioDiesel today is made from soybean oil.diesel fuel Most trucks, buses, and tractors in the United States use #2 diesel fuel. Diesel is a non-renewable fuel made from petroleum. Using BioDiesel means that we use a little bit less petroleum. BioDiesel results in less pollution than petroleum diesel. Any vehicle that operates on diesel fuel can switch to BioDiesel without changes to its engine.

60. Advantages of Biodiesel BioDiesel is renewable, nontoxic, and biodegradable. Compared to diesel, BioDiesel, is significantly cleaner burning. It produces fewer air pollutants, like particulates, carbon monoxide, hydrocarbons, and air toxics. It does slightly increase emissions of nitrogen oxides, though. BioDiesel produces less black smoke, and smells better, too. Sometimes BioDiesel smells like french fries!

61. Investigation Your task is to design and conduct an investigation to discover which bio-fuel produces the greatest quantity of energy. A written scientific report must be completed