Unit10: Sources of energy
Getting started
Carbon footprint
Negative effects
Renewable >< nonrenewable
Run out
solar panel
Vocabulary
Khí thải carbon
Có thể làm mới >< không thể làm mới
Ảnh hưởng tiêu cực 
Cạn kiệt
Tấm pin năng lượng mặt trời
A different type of footprint
Mai: Nam, I read yesterday that we all have a carbon footprint. 
Nam: Well, we all have footprints - we make them with our feet! 
Mai: Ha ha, I know that. But this kind of footprint is about the negative effect we have on the environment. 
Nam: Right, it`s in the news a lot these days. 
Mai: So our footprint is bigger when we use energy that produces carbon dioxide. That`s bad for the environment. 
Nam: So it`s better to have a smaller footprint, right? 
Mai: Right, Nam. Non-renewable energy sources like coal, natural gas, and oil produce a lot of carbon dioxide. Those sources are going to run out soon too. 
Nam: So, they`re different to wind, hydro, and solar? 
Mai: Yes, they`re all sources of energy too, but they`re renewable. That means we can`t use them all up - they will last forever. 
Nam: Do you have a big carbon footprint, Mai? 
Mai: Mine`s small. I recycle the products I use and I go everywhere by bike. We have solar panels on our roof at home to catch the sun`s energy, too. 
Nam: Oh no! I think my footprint is big, and not just because of these big shoes! 
1a. Read the conversation again and answer the questions
1.What is a carbon footprint?
_____________________________________________
2.What does `non-renewable energy` mean?
_____________________________________________
3.Why is sunlight a renewable source?
_____________________________________________
4.Why does Mai think she has a small carbon footprint?
_____________________________________________
5.What things do you think might create a big carbon footprint?
_____________________________________________
It’s about the negative effect we have on the environment.
“Non-renewable” means that it will run out if we use it.
Sunlight is a renewable energy because we can’t use it all up, it will last forever.
Mai thinks she has a small carbon footprint because she recycles the products she uses and she goes everywhere by bike.
The products we use that are bad for the environment or the energy we use that produces carbon dioxide might create a big carbon footprint.
1b. Complete the network below using information from the conversation
Wind
Solar
Hydro
Natural
gas
Oil 
Coal
Wind   coal   natural gas   nuclear
Biogas   oil   hydro   solar
2. Now, listen and repeat the words and phrases
3. Put the words into the correct groups below
Wind, hydro, biogas, nuclear, solar
Coal, natural gas, oil
A: What type of energy source is wind?
B: It`s a renewable source of energy.
A: What type of energy source is coal?
B: It`s a non-renewable source.
4. Practise asking and answering the questions about renewable and non-renewable sources.
Bye!