Renewable energy sources presentation according to the new textbook for class 9/10.

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

3. English For Today
Class IX-X
Subject

4. Unit: Eleven
Renewable Energy

5. 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

7. Prehistoric World
Was full of plants/trees

8. Fossil Fuels
Oil
Gas
Coal
H
y
d
r
o
C
a
r
b
o
n

9. Hydrocarbons are
non-renewable
Energy
H
y
d
r
o
C
a
r
b
o
n
Fossil Fuels

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

11. Sources of Renewable Energy

13. Wind

14. Wave

15. R a i n

16. Hydrogen Energy

17. Biomass

20. The earth is hot
Geyser

21. 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.
G
R
O
U
P
W
O
R
K
G
R
O
U
P
W
O
R
K

22. Solar Panel

23. Wind Turbine

24. Hydro Electricity

25. Biomass

27. Geothermal heating

28. 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.

29. 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.

30. Non-renewable
energy
Renewable energy
What are those
Effects
Consequences
Information Transfer
Petroleum, coal, gas Sun
light, wind, rain, biomass, ea
rth’ heat
Damaging, polluting Eco-friendly
Will run out Will never run out

31. Synonyms
Words Synonyms
Fossil 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

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