Renewable energy sources for class 9/10 [Bangladesh]

MY PROFILEBiddut Khoshnobish

Assistant Teacher

Sristy Residential SchoolTangail

Cell: 018 3311 6567E-mail: biddut.khoshnobish@gmail.com

English For TodayClass IX-X

Subject

Unit: ElevenRenewable Energy

Learning Outcomes

During discussion we will learn about:

EnergyFossil Fossil FuelsNon-renewable energyRenewable energyMain sources of renewable energyDefinitions of some terms used in the text

After discussion we will have:

SynonymsQuestions & Answers Group WorkHome TaskA video clip of volcanic eruption

Prehistoric World

Was full of plants/trees

Fossil Fuels

Oil

Gas

Coal

Hydro Carbon

Hydrocarbons are

non-renewabl

e Energy

Hydro Carbon

Fossil Fuels

What is energy?Energy helps us do things.

Sources of Renewable Energy

Sunlight

Wind

Wave

R a i n

Hydrogen Energy

Biomass

Geothermal Energy

The earth is hot

Geyser

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.

GROUP

WORK

GROUP

WORK

Solar Panel

Wind Turbine

Hydro Electricity

Biomass

Geothermal heating

Geothermal heating

Questions & Answers:

1. 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.

Questions & Answers4. “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.

Non-renewable energy

Renewable energy

What are those

Effects

Consequences

Information Transfer

Petroleum, coal, gas Sun light, wind, rain, biomass, earth’ heat

Damaging, polluting Eco-friendly

Will run out Will never run out

Synonyms

Words SynonymsFossil Organic remains, skeleton, deposit

Replenish Renew, recreate, refill

Finite Limited, fixed

Constant Regular, nonstop, steadfast, continual

Eventual Ultimate, final

Interior Inside, inner

Source Origin, root

Downhill Downward, falling, dropping

Abundant Plentiful, sufficient, rich

Home Task

Write a summary of the passage in about 100 words.