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  1. MY PROFILE BiddutKhoshnobish Assistant Teacher Sristy Residential School Tangail Cell: 018 3311 6567 E-mail: biddut.khoshnobish@gmail.com

  2. Subject English For TodayClass IX-X

  3. Unit: ElevenRenewable Energy

  4. Learning Outcomes • During discussion we will learn about: • Energy • Fossil • Fossil Fuels • Non-renewable energy • Renewable energy • Main sources of renewable energy • Definitions of some terms used in the text • After discussion we will have: • Synonyms • Questions & Answers • Group Work • Home Task • A video clip of volcanic eruption

  5. Prehistoric World Was full of plants/trees

  6. Fossil Fuels HydroCarbon

  7. Fossil Fuels HydroCarbon

  8. What is energy? Energy helps us do things.

  9. Sources of Renewable Energy

  10. Sunlight

  11. Wind

  12. Wave

  13. R a i n

  14. Biomass

  15. Geothermal Energy

  16. Geyser The earth is hot

  17. GROUP WORK GROUP WORK How can we use those sources of renewable energy? Now starts group work. Think 5 minutes. Group leaders will tell the ways we can follow to use the sources.

  18. Biomass

  19. Geothermal heating

  20. Geothermal heating

  21. Questions & Answers: • What do you mean by fossil fuels? • 2. Why are the fossil fuels thought to be big problems? • 3. What do you mean by renewable energy? Ans: Petroleum, coal and natural gas are called fossil fuels because they have been produced from plants and trees for millions of years. Ans: Fossil fuels are thought to be big problems mainly for three reasons. First, fossil fuels are limited and will run out. Secondly, they are expensive and damaging for the environment. Thirdly, they directly cause global warming. Ans: Some energy sources are constantly and naturally replenished. As a result they will never run out. These are called renewable energy.

  22. Questions & Answers 4. “Bio-energy” & “Geothermal energy”– do these two terms seem new to you? If yes, what have you learnt about them? Ans: Yes, they are new to me. I have learnt that plants and trees produce waste or wood which can be turned into fuel. They are called biomass. The interior of the earth contains lava with extreme heat. This heat produces steam and hot water which is called geothermal energy. 5. What are the major differences of non-renewable and renewable energy sources? Ans: Non-renewable energy sources are expensive, damaging and will run out eventually. On the other hand, renewable energy sources are eco-friendly and will never run out.

  23. Information Transfer Sun light, wind, rain, biomass, earth’ heat Petroleum, coal, gas Damaging, polluting Eco-friendly Will run out Will never run out

  24. Synonyms

  25. Home Task Write a summary of the passage in about 100 words.