Warmly welcome the teachers
Warm up
soot [sut] (n) bồ hóng, bụi than
[`di:zl `vi:hikl] xe động cơ diesel
BLACK CARBON POLLUTION
New lesson
UNIT 3: THE GREEN MOVEMENT
PERIOD 20: READING
BEFORE YOU READ
Activity 1: Match the pictures with the appropriate phrases
Soot
Diesel vehicle
Melting of
the Arctic
Activity 2: Choose the appropriate heading for each paragraph:
a. Soot and global warming
b. The effect of soot on human health
c. The origin of soot
d. Ways to reduce soot emissions
WHILE YOU READ
VOCABULARY
- Heat up (n):
Làm nóng lên
- Slow down (vp):
Làm giảm
- Have an impact on (vp):
Có tác động
- Asthma (n):
Bệnh hen suyễn
- Bronchitis (n):
Bệnh viêm phế quản
- Mound / mildew (n):
Rêu, nấm mốc
- Bloodstream. (n):
Mạch máu
- Absorb (v):
Hấp thụ
Nowadays we know a lot about the link between carbon dioxide (C02) emissions and global warming. However, we seem to be unaware of one very dangerous pollutant, soot also called black carbon.
1.________
Soot comes from the incomplete combustion or coal, oil, wood and other fuels. In other words diesel engines, vehicle exhaust pipes, farming machines, construction equipment, or simply fires in grills, fireplaces, and stoves are potential sources of soot. It appears in our daily life and can easily affect every one of us.
c. The origin of soot
comes from
appears
2._______
Soot like all black things absorbs sunlight and heats up the atmosphere. According to recent research, it is the second most damaging greenhouse gas after C02, and twice as harmful to the climate. Although black carbon remains in the atmosphere for no more than seven days it is particularly damaging to frozen areas. Soot emissions might be responsible for the quick melting of the Arctic. Controlling black carbon can help to slow down global warming.
a. Soot and global warming
Controlling black carbon can help to
slow down global warming.
3._______
Soot does not only have an impact on global warming and climate change, but is also unhealthy. A soot particle is very tiny - smaller than dust and mould, and about 1/30 the width of a human hair. It can easily go into our bloodstream and lungs via the nose and throat. As a result, breathing in the tiny particles can cause asthma attacks, heart disease, bronchitis and many other respiratory illnesses.
b. The effect of soot on human health
unhealthy.
cause asthma
attacks, heart disease, bronchitis and many other
respiratory illnesses.
4._______
Large quantities of man-made soot enter the atmosphere every year. The effects are most damaging regionally, especially in South and East Asia, Latin America and parts of Africa. In developing countries, reducing soot emissions can be achieved by replacing traditional stoves with clean, alternative fuel cookers and heaters. Installation of filters to remove black carbon from diesel vehicles can also reduce soot. Changing to electric or hydrogen vehicles will also reduce the impact on the environment.
In conclusion, reducing black carbon will have immediate benefits in slowing down global warming and the melting of the Arctic snow and ice. It would also prevent many soot-related deaths and illnesses.
d. Ways to reduce soot emissions
reducing soot
emissions can be achieved by
Activity 3: Complete the sentences with no more than 5 words.
1. We know about carbon dioxide and its impact on global warming , but we ……………………………………….................
2. Soot come from the burning of coal, …………………………………….
3. Black carbon is the …..........................................................after carbon dioxide.
4.Soot particles can be easily breathed in because they are………………………………………………
know little about soot.
oil, wood, and other fuels.
second most damaging greenhouse gas
smaller than dust and mould/very tiny.
Answer the questions in groups.
AFTER YOU READ
Activity 4: Discussion.
You have learnt about:
The origin of soot.
The effect of soot on the environment and human health.
How to reduce soot emission in my community and in Viet Nam.
Prepare the next lesson.
Consolidation
Thanks for your attention!.
nguon VI OLET
