WELCOME To Todays Class TEACHERS IDENTITY Md Hamid

WELCOME To Today’s Class

TEACHER’S IDENTITY Md. Hamid Ullah Assistant Teacher (English) Daulatkhan Govt. High School Bhola

LESSON CLASS: TEN SUBJECT: ENGLISH FOR TODAY UNIT : 11 LESSON: 3

Can you guess anything?

Lesson Title Renewable Energy Sources 3

Learning Outcomes After this lesson , we will be able to … 1. Learn some new words, 2. Read the text with meaning, 3. Ask answer some questions, 4. Understand the difference between renewable and non renewable energy, 5. Fill in the gaps.

Vocabulary Festival Rush Home bound Transport ceremony, commemoration, carnival haste, hurry Rushing towards home Carriage, vehicle, conveyance

Eventually Expensive Replenished Tremendous Turbine Finally, ultimately, in the end Costly, luxurious, pricy, overpriced Refilled, reloaded Dreadful. Dangerous A wheel driven by water, air, stream

Read the passage silently and answer the questions Countries of the world rely heavily on petroleum, coal and natural gas for their energy sources. There are two major types of energy sources: renewable and nonrenewable. Hydro-carbon or fossil fuels are non-renewable sources of energy. Reliance on them poses real big problems. First, fossil fuels such as oil, coal, gas etc, are finite energy resources and the world eventually will run out of them.

Secondly, they will become too expensive in the coming decades and too damaging for the environment to repair. Thirdly, fossil fuels have direct polluting impacts on earth’s environment causing global warming. In contrast, renewable energy sources such as, wind and solar energy are constantly and naturally replenished and never run out. Most renewable energy comes either directly or indirectly from the sun. Sunlight or solar energy can be used for heating and lighting homes, for generating electricity and for other commercial and industrial uses.

The sun’s heat drives the wind and this wind energy can be captured with wind turbines to produce electricity. Then the wind and the sun’s heat cause water to evaporate. When this water vapour turns into rain or snow and flows downhill into rivers or streams, its energy can be captured as hydroelectric energy. Along with the rain and snow, sunlight causes plants to grow. Plants produce biomass which again can be turned into fuels such as fire wood, alcohol, etc identified as bioenergy. Scientists have identified Hydrogen as another form of renewable energy source. It is the most abundant element in nature. But it does not exist separately as a gas. It is always combined with other elements, such as with oxygen to make water.

Hydrogen, separated from another element, can be burned as a fuel to produce electricity. Our Earth’s interior contains molten lava with tremendous heat. This heat inside the Earth produces steam and hot water which can be tapped as geothermal energy to produce electricity, for heating home, etc. Ocean energy comes from several sources. Ocean’s force of tide and wave can be used to produce energy. The surface of the ocean gets more heat from the sun than the ocean depths. This temperature difference can be used as energy source too.

Individual Work Find out and write down the renewable and nonrenewable energy sources.

Wind Solar energy Hydrogen Renewabl e energy Snow and rain Water

Hydro carbon Coal fossil fuel Nonrenewabl e energy Gas Oil

Choose the best answer from the alternatives. 1) The closest meaning of the word ‘rely’ isa) Apply b) supply c) depend d) utilize 2) Which one describes the renewable energy sources? a) Destructive b) best c) fixed d) finite 3) Which of the following are non-renewable energy sources? a) Sun and wind b) hydrocarbon / fossil fuel c) Wind and water d) rain or snow 4) From where does renewable energy come? a) From gas b) from water c) from the sun d) from wind 5) The word non-renewable refers toa) Fit for renew b) dirty thing c) unfit for renew d) repairable 6) Hydrogen mixed with oxygen makesa) Gas b) water c) solar energy d) electricity 7) The word replenish refers to – a) Omit b) fill up c) combine d) separate

Answer the Questions (Pair Work) 1 What do you mean by renewable energy sources? 2 What are the problems with non-renewable energy sources? 3 What are the major differences between renewable and non-renewable energy sources?

SOLUTION 1. Renewable energy sources are the energy sources which are constantly and naturally replenished and never run out. 2. The problems with non-renewable energy sources are: a) They are finite energy sources and they run out eventually. b) They are costly c) They have direct polluting impacts on earth’s environment causing global warming.

Difference between renewable and non- renewable energy sources Renewable energy source Non-renewable energy source a) Renewable energy a) Non- renewable sources are infinite. energy sources are finite. b) They will never run b) They will run out. c) They are environment friendly. c) They are not environment friendly.

Gap Filling (Group Work) Complete the passage with suitable words. types of energy sources. There are two a) ------renewable and non- renewable. Renewable energy infinite sources are b) -----and they never run out. On the other hand non- renewable energy sources are finite and they will run out in future. d) Reliance c) -------on renewable energy is good but dependence on non renewable ones will cause e) danger -----in the better to be habituated with days ahead. So it is f) ------renewable energy sources g) because ----- they are and everlasting. healthy h)------

Evaluation a) Could you tell me the meaning of ‘replenish, reliance’? b) Make difference between renewable and non-renewable energy sources? c) Which one is finite energy?

Home Work Make a list of the sources and uses of renewable and non-renewable energy.

Stay Safe THANKS